id	sid	tid	token	lemma	pos
cet-2331	1	1	chemical	chemical	NOUN
cet-2331	1	2	engineering	engineering	NOUN
cet-2331	1	3	transactions	transaction	NOUN
cet-2331	1	4	vol	vol	NOUN
cet-2331	1	5	.	.	PROPN
cet-2331	1	6	57	57	NUM
cet-2331	1	7	,	,	PUNCT
cet-2331	1	8	2017	2017	NUM
cet-2331	1	9	a	a	DET
cet-2331	1	10	publication	publication	NOUN
cet-2331	1	11	of	of	ADP
cet-2331	1	12	the	the	DET
cet-2331	1	13	italian	italian	ADJ
cet-2331	1	14	association	association	NOUN
cet-2331	1	15	of	of	ADP
cet-2331	1	16	chemical	chemical	PROPN
cet-2331	1	17	engineering	engineering	NOUN
cet-2331	1	18	online	online	ADV
cet-2331	1	19	at	at	ADP
cet-2331	1	20	www.aidic.it/cet	www.aidic.it/cet	PROPN
cet-2331	1	21	guest	guest	NOUN
cet-2331	1	22	editors	editor	NOUN
cet-2331	1	23	:	:	PUNCT
cet-2331	1	24	sauro	sauro	PROPN
cet-2331	1	25	pierucci	pierucci	PROPN
cet-2331	1	26	,	,	PUNCT
cet-2331	1	27	jiří	jiří	NOUN
cet-2331	1	28	jaromír	jaromír	PROPN
cet-2331	1	29	klemeš	klemeš	PROPN
cet-2331	1	30	,	,	PUNCT
cet-2331	1	31	laura	laura	PROPN
cet-2331	1	32	piazza	piazza	PROPN
cet-2331	1	33	,	,	PUNCT
cet-2331	1	34	serafim	serafim	NOUN
cet-2331	1	35	bakalis	bakali	VERB
cet-2331	1	36	copyright	copyright	NOUN
cet-2331	1	37	©	©	PROPN
cet-2331	1	38	2017	2017	NUM
cet-2331	1	39	,	,	PUNCT
cet-2331	1	40	aidic	aidic	ADJ
cet-2331	1	41	servizi	servizi	PROPN
cet-2331	1	42	s.r.l	s.r.l	PROPN
cet-2331	1	43	.	.	PUNCT
cet-2331	2	1	isbn	isbn	ADJ
cet-2331	2	2	978	978	NUM
cet-2331	2	3	-	-	SYM
cet-2331	2	4	88	88	NUM
cet-2331	2	5	-	-	PUNCT
cet-2331	2	6	9560848	9560848	NUM
cet-2331	2	7	-	-	SYM
cet-2331	2	8	8	8	NUM
cet-2331	2	9	;	;	PUNCT
cet-2331	2	10	issn	issn	PROPN
cet-2331	2	11	2283	2283	NUM
cet-2331	2	12	-	-	SYM
cet-2331	2	13	9216	9216	NUM
cet-2331	2	14	chemical	chemical	NOUN
cet-2331	2	15	characterization	characterization	NOUN
cet-2331	2	16	of	of	ADP
cet-2331	2	17	polar	polar	ADJ
cet-2331	2	18	species	specie	NOUN
cet-2331	2	19	in	in	ADP
cet-2331	2	20	colombian	colombian	ADJ
cet-2331	2	21	vacuum	vacuum	NOUN
cet-2331	2	22	residue	residue	NOUN
cet-2331	2	23	and	and	CCONJ
cet-2331	2	24	its	its	PRON
cet-2331	2	25	supercritical	supercritical	ADJ
cet-2331	2	26	fluid	fluid	NOUN
cet-2331	2	27	extraction	extraction	NOUN
cet-2331	2	28	subfractions	subfraction	NOUN
cet-2331	2	29	using	use	VERB
cet-2331	2	30	electrospray	electrospray	ADJ
cet-2331	2	31	ionization	ionization	NOUN
cet-2331	2	32	ft	ft	PROPN
cet-2331	2	33	-	-	PUNCT
cet-2331	2	34	icr	icr	PROPN
cet-2331	2	35	mass	mass	PROPN
cet-2331	2	36	spectrometry	spectrometry	PROPN
cet-2331	2	37	juan	juan	PROPN
cet-2331	2	38	p.	p.	PROPN
cet-2331	2	39	arenas	arenas	PROPN
cet-2331	2	40	-	-	PUNCT
cet-2331	2	41	diaz*a	diaz*a	NUM
cet-2331	2	42	,	,	PUNCT
cet-2331	2	43	diana	diana	PROPN
cet-2331	2	44	c.	c.	PROPN
cet-2331	2	45	palacioa	palacioa	PROPN
cet-2331	2	46	,	,	PUNCT
cet-2331	2	47	claudia	claudia	PROPN
cet-2331	2	48	x.	x.	PROPN
cet-2331	2	49	ramirezb	ramirezb	PROPN
cet-2331	2	50	,	,	PUNCT
cet-2331	2	51	rafael	rafael	PROPN
cet-2331	2	52	cabanzoa	cabanzoa	PROPN
cet-2331	2	53	,	,	PUNCT
cet-2331	2	54	alexander	alexander	PROPN
cet-2331	2	55	guzmánc	guzmánc	PROPN
cet-2331	2	56	,	,	PUNCT
cet-2331	2	57	enrique	enrique	PROPN
cet-2331	2	58	mejía	mejía	PROPN
cet-2331	2	59	-	-	PUNCT
cet-2331	2	60	ospinoa	ospinoa	NOUN
cet-2331	2	61	afaculty	afaculty	NOUN
cet-2331	2	62	of	of	ADP
cet-2331	2	63	sciences	science	NOUN
cet-2331	2	64	,	,	PUNCT
cet-2331	2	65	universidad	universidad	PROPN
cet-2331	2	66	industrial	industrial	PROPN
cet-2331	2	67	de	de	X
cet-2331	2	68	santander	santander	NOUN
cet-2331	2	69	,	,	PUNCT
cet-2331	2	70	cra	cra	PROPN
cet-2331	2	71	27	27	NUM
cet-2331	2	72	calle	calle	NOUN
cet-2331	2	73	9	9	NUM
cet-2331	2	74	,	,	PUNCT
cet-2331	2	75	bucaramanga	bucaramanga	PROPN
cet-2331	2	76	,	,	PUNCT
cet-2331	2	77	colombia	colombia	PROPN
cet-2331	2	78	.	.	PUNCT
cet-2331	2	79	bfaculty	bfaculty	NOUN
cet-2331	2	80	of	of	ADP
cet-2331	2	81	physicochemicals	physicochemical	NOUN
cet-2331	2	82	engineerings	engineering	NOUN
cet-2331	2	83	,	,	PUNCT
cet-2331	2	84	universidad	universidad	PROPN
cet-2331	2	85	industrial	industrial	PROPN
cet-2331	2	86	de	de	X
cet-2331	2	87	santander	santander	NOUN
cet-2331	2	88	,	,	PUNCT
cet-2331	2	89	cra	cra	PROPN
cet-2331	2	90	27	27	NUM
cet-2331	2	91	calle	calle	NOUN
cet-2331	2	92	9	9	NUM
cet-2331	2	93	,	,	PUNCT
cet-2331	2	94	bucaramanga	bucaramanga	PROPN
cet-2331	2	95	,	,	PUNCT
cet-2331	2	96	colombia	colombia	PROPN
cet-2331	2	97	.	.	PUNCT
cet-2331	3	1	cinstituto	cinstituto	PROPN
cet-2331	3	2	colombiano	colombiano	PROPN
cet-2331	3	3	del	del	PROPN
cet-2331	3	4	petróleo	petróleo	PROPN
cet-2331	3	5	,	,	PUNCT
cet-2331	3	6	km	km	PROPN
cet-2331	3	7	7	7	NUM
cet-2331	3	8	vía	vía	NOUN
cet-2331	3	9	piedecuesta	piedecuesta	NOUN
cet-2331	3	10	,	,	PUNCT
cet-2331	3	11	piedecuesta	piedecuesta	PROPN
cet-2331	3	12	,	,	PUNCT
cet-2331	3	13	colombia	colombia	PROPN
cet-2331	3	14	.	.	PUNCT
cet-2331	4	1	juan.arenas1@correo.uis.edu.co	juan.arenas1@correo.uis.edu.co	PROPN
cet-2331	4	2	compositional	compositional	ADJ
cet-2331	4	3	changes	change	NOUN
cet-2331	4	4	of	of	ADP
cet-2331	4	5	colombian	colombian	ADJ
cet-2331	4	6	vacuum	vacuum	NOUN
cet-2331	4	7	residue	residue	NOUN
cet-2331	4	8	and	and	CCONJ
cet-2331	4	9	its	its	PRON
cet-2331	4	10	supercritical	supercritical	ADJ
cet-2331	4	11	fluid	fluid	ADJ
cet-2331	4	12	extraction	extraction	NOUN
cet-2331	4	13	fractionation	fractionation	NOUN
cet-2331	4	14	(	(	PUNCT
cet-2331	4	15	sfef	sfef	NOUN
cet-2331	4	16	)	)	PUNCT
cet-2331	4	17	subfractions	subfraction	NOUN
cet-2331	4	18	were	be	AUX
cet-2331	4	19	analysed	analyse	VERB
cet-2331	4	20	by	by	ADP
cet-2331	4	21	positiveand	positiveand	PROPN
cet-2331	4	22	negative	negative	ADJ
cet-2331	4	23	mode	mode	NOUN
cet-2331	4	24	electrospray	electrospray	NOUN
cet-2331	4	25	(	(	PUNCT
cet-2331	4	26	esi	esi	NOUN
cet-2331	4	27	)	)	PUNCT
cet-2331	4	28	coupled	couple	VERB
cet-2331	4	29	with	with	ADP
cet-2331	4	30	fourier	fourier	NOUN
cet-2331	4	31	-	-	PUNCT
cet-2331	4	32	transform	transform	NOUN
cet-2331	4	33	ion	ion	NOUN
cet-2331	4	34	cyclotron	cyclotron	NOUN
cet-2331	4	35	resonance	resonance	NOUN
cet-2331	4	36	mass	mass	NOUN
cet-2331	4	37	spectrometry	spectrometry	NOUN
cet-2331	4	38	(	(	PUNCT
cet-2331	4	39	ft	ft	PROPN
cet-2331	4	40	-	-	PUNCT
cet-2331	4	41	icr	icr	PROPN
cet-2331	4	42	ms	ms	PROPN
cet-2331	4	43	)	)	PUNCT
cet-2331	4	44	.	.	PUNCT
cet-2331	5	1	the	the	DET
cet-2331	5	2	results	result	NOUN
cet-2331	5	3	showed	show	VERB
cet-2331	5	4	different	different	ADJ
cet-2331	5	5	distribution	distribution	NOUN
cet-2331	5	6	of	of	ADP
cet-2331	5	7	compounds	compound	NOUN
cet-2331	5	8	among	among	ADP
cet-2331	5	9	the	the	DET
cet-2331	5	10	sfef	sfef	NOUN
cet-2331	5	11	subfractions	subfraction	NOUN
cet-2331	5	12	.	.	PUNCT
cet-2331	6	1	the	the	DET
cet-2331	6	2	most	most	ADV
cet-2331	6	3	dominant	dominant	ADJ
cet-2331	6	4	classes	class	NOUN
cet-2331	6	5	were	be	AUX
cet-2331	6	6	the	the	DET
cet-2331	6	7	nitrogen	nitrogen	NOUN
cet-2331	6	8	compounds	compound	VERB
cet-2331	6	9	n1	n1	PROPN
cet-2331	6	10	and	and	CCONJ
cet-2331	6	11	the	the	DET
cet-2331	6	12	sfef	sfef	NOUN
cet-2331	6	13	end	end	NOUN
cet-2331	6	14	-	-	PUNCT
cet-2331	6	15	cut	cut	NOUN
cet-2331	6	16	showed	show	VERB
cet-2331	6	17	to	to	PART
cet-2331	6	18	be	be	AUX
cet-2331	6	19	enriched	enrich	VERB
cet-2331	6	20	in	in	ADP
cet-2331	6	21	multi	multi	ADJ
cet-2331	6	22	-	-	ADJ
cet-2331	6	23	heteroatom	heteroatom	ADJ
cet-2331	6	24	species	specie	NOUN
cet-2331	6	25	.	.	PUNCT
cet-2331	7	1	detailed	detailed	ADJ
cet-2331	7	2	analysis	analysis	NOUN
cet-2331	7	3	of	of	ADP
cet-2331	7	4	double	double	ADJ
cet-2331	7	5	bond	bond	NOUN
cet-2331	7	6	equivalent	equivalent	ADJ
cet-2331	7	7	(	(	PUNCT
cet-2331	7	8	dbe	dbe	NOUN
cet-2331	7	9	)	)	PUNCT
cet-2331	7	10	distribution	distribution	NOUN
cet-2331	7	11	revealed	reveal	VERB
cet-2331	7	12	that	that	SCONJ
cet-2331	7	13	pyridine	pyridine	NOUN
cet-2331	7	14	compounds	compound	NOUN
cet-2331	7	15	were	be	AUX
cet-2331	7	16	more	more	ADV
cet-2331	7	17	aromatic	aromatic	ADJ
cet-2331	7	18	than	than	ADP
cet-2331	7	19	pyrrole	pyrrole	ADJ
cet-2331	7	20	ones	one	NOUN
cet-2331	7	21	.	.	PUNCT
cet-2331	8	1	planar	planar	ADJ
cet-2331	8	2	limit	limit	NOUN
cet-2331	8	3	indicated	indicate	VERB
cet-2331	8	4	high	high	ADJ
cet-2331	8	5	condensation	condensation	NOUN
cet-2331	8	6	degree	degree	NOUN
cet-2331	8	7	of	of	ADP
cet-2331	8	8	carboxylic	carboxylic	ADJ
cet-2331	8	9	acids	acid	NOUN
cet-2331	8	10	species	specie	NOUN
cet-2331	8	11	.	.	PUNCT
cet-2331	9	1	therefore	therefore	ADV
cet-2331	9	2	,	,	PUNCT
cet-2331	9	3	this	this	DET
cet-2331	9	4	work	work	NOUN
cet-2331	9	5	evidenced	evidence	VERB
cet-2331	9	6	the	the	DET
cet-2331	9	7	utility	utility	NOUN
cet-2331	9	8	of	of	ADP
cet-2331	9	9	sfef	sfef	NOUN
cet-2331	9	10	fractionation	fractionation	NOUN
cet-2331	9	11	and	and	CCONJ
cet-2331	9	12	esi	esi	NOUN
cet-2331	9	13	ft	ft	PROPN
cet-2331	9	14	-	-	PUNCT
cet-2331	9	15	icr	icr	PROPN
cet-2331	9	16	ms	ms	NOUN
cet-2331	9	17	in	in	ADP
cet-2331	9	18	the	the	DET
cet-2331	9	19	detailed	detailed	ADJ
cet-2331	9	20	characterization	characterization	NOUN
cet-2331	9	21	of	of	ADP
cet-2331	9	22	polar	polar	ADJ
cet-2331	9	23	compounds	compound	NOUN
cet-2331	9	24	in	in	ADP
cet-2331	9	25	vacuum	vacuum	PROPN
cet-2331	9	26	residua	residua	PROPN
cet-2331	9	27	.	.	PROPN
cet-2331	10	1	1	1	X
cet-2331	10	2	.	.	X
cet-2331	10	3	introduction	introduction	NOUN
cet-2331	10	4	petroleum	petroleum	NOUN
cet-2331	10	5	has	have	AUX
cet-2331	10	6	established	establish	VERB
cet-2331	10	7	as	as	ADP
cet-2331	10	8	the	the	DET
cet-2331	10	9	most	most	ADV
cet-2331	10	10	important	important	ADJ
cet-2331	10	11	and	and	CCONJ
cet-2331	10	12	versatile	versatile	ADJ
cet-2331	10	13	natural	natural	ADJ
cet-2331	10	14	resource	resource	NOUN
cet-2331	10	15	available	available	ADJ
cet-2331	10	16	for	for	ADP
cet-2331	10	17	fuel	fuel	NOUN
cet-2331	10	18	generation	generation	NOUN
cet-2331	10	19	and	and	CCONJ
cet-2331	10	20	wide	wide	ADJ
cet-2331	10	21	variety	variety	NOUN
cet-2331	10	22	of	of	ADP
cet-2331	10	23	products	product	NOUN
cet-2331	10	24	(	(	PUNCT
cet-2331	10	25	hsu	hsu	PROPN
cet-2331	10	26	et	et	PROPN
cet-2331	10	27	al	al	PROPN
cet-2331	10	28	.	.	PROPN
cet-2331	10	29	,	,	PUNCT
cet-2331	10	30	2013	2013	NUM
cet-2331	10	31	)	)	PUNCT
cet-2331	10	32	.	.	PUNCT
cet-2331	11	1	this	this	DET
cet-2331	11	2	substance	substance	NOUN
cet-2331	11	3	is	be	AUX
cet-2331	11	4	a	a	DET
cet-2331	11	5	complex	complex	ADJ
cet-2331	11	6	mixture	mixture	NOUN
cet-2331	11	7	of	of	ADP
cet-2331	11	8	thousands	thousand	NOUN
cet-2331	11	9	of	of	ADP
cet-2331	11	10	chemically	chemically	ADV
cet-2331	11	11	distinct	distinct	ADJ
cet-2331	11	12	compounds	compound	NOUN
cet-2331	11	13	,	,	PUNCT
cet-2331	11	14	which	which	PRON
cet-2331	11	15	define	define	VERB
cet-2331	11	16	its	its	PRON
cet-2331	11	17	physicochemical	physicochemical	ADJ
cet-2331	11	18	properties	property	NOUN
cet-2331	11	19	(	(	PUNCT
cet-2331	11	20	klein	klein	PROPN
cet-2331	11	21	et	et	PROPN
cet-2331	11	22	al	al	PROPN
cet-2331	11	23	.	.	PROPN
cet-2331	11	24	,	,	PUNCT
cet-2331	11	25	2006a	2006a	NUM
cet-2331	11	26	)	)	PUNCT
cet-2331	11	27	.	.	PUNCT
cet-2331	12	1	due	due	ADP
cet-2331	12	2	to	to	ADP
cet-2331	12	3	global	global	ADJ
cet-2331	12	4	decline	decline	NOUN
cet-2331	12	5	of	of	ADP
cet-2331	12	6	light	light	ADJ
cet-2331	12	7	oil	oil	NOUN
cet-2331	12	8	reserves	reserve	NOUN
cet-2331	12	9	,	,	PUNCT
cet-2331	12	10	heavy	heavy	ADJ
cet-2331	12	11	oil	oil	NOUN
cet-2331	12	12	fractions	fraction	NOUN
cet-2331	12	13	as	as	SCONJ
cet-2331	12	14	vacuum	vacuum	NOUN
cet-2331	12	15	residua	residua	PROPN
cet-2331	12	16	have	have	AUX
cet-2331	12	17	become	become	VERB
cet-2331	12	18	an	an	DET
cet-2331	12	19	alternative	alternative	NOUN
cet-2331	12	20	for	for	ADP
cet-2331	12	21	refineries	refinery	NOUN
cet-2331	12	22	obtaining	obtain	VERB
cet-2331	12	23	high	high	ADJ
cet-2331	12	24	value	value	NOUN
cet-2331	12	25	-	-	PUNCT
cet-2331	12	26	added	add	VERB
cet-2331	12	27	products	product	NOUN
cet-2331	12	28	.	.	PUNCT
cet-2331	13	1	however	however	ADV
cet-2331	13	2	,	,	PUNCT
cet-2331	13	3	their	their	PRON
cet-2331	13	4	processing	processing	NOUN
cet-2331	13	5	presents	present	VERB
cet-2331	13	6	important	important	ADJ
cet-2331	13	7	difficulties	difficulty	NOUN
cet-2331	13	8	because	because	SCONJ
cet-2331	13	9	of	of	ADP
cet-2331	13	10	their	their	PRON
cet-2331	13	11	high	high	ADJ
cet-2331	13	12	content	content	NOUN
cet-2331	13	13	of	of	ADP
cet-2331	13	14	aromatic	aromatic	ADJ
cet-2331	13	15	rings	ring	NOUN
cet-2331	13	16	and	and	CCONJ
cet-2331	13	17	enrichment	enrichment	NOUN
cet-2331	13	18	in	in	ADP
cet-2331	13	19	heteroatoms	heteroatom	NOUN
cet-2331	13	20	.	.	PUNCT
cet-2331	14	1	this	this	DET
cet-2331	14	2	problem	problem	NOUN
cet-2331	14	3	becomes	become	VERB
cet-2331	14	4	visible	visible	ADJ
cet-2331	14	5	through	through	ADP
cet-2331	14	6	coke	coke	NOUN
cet-2331	14	7	formation	formation	NOUN
cet-2331	14	8	and	and	CCONJ
cet-2331	14	9	catalyst	catalyst	NOUN
cet-2331	14	10	poisoning	poisoning	NOUN
cet-2331	14	11	(	(	PUNCT
cet-2331	14	12	liu	liu	PROPN
cet-2331	14	13	et	et	PROPN
cet-2331	14	14	al	al	PROPN
cet-2331	14	15	.	.	PROPN
cet-2331	14	16	,	,	PUNCT
cet-2331	14	17	2013	2013	NUM
cet-2331	14	18	)	)	PUNCT
cet-2331	14	19	.	.	PUNCT
cet-2331	15	1	thousands	thousand	NOUN
cet-2331	15	2	of	of	ADP
cet-2331	15	3	tons	ton	NOUN
cet-2331	15	4	of	of	ADP
cet-2331	15	5	vacuum	vacuum	PROPN
cet-2331	15	6	residua	residua	PROPN
cet-2331	15	7	are	be	AUX
cet-2331	15	8	generated	generate	VERB
cet-2331	15	9	annually	annually	ADV
cet-2331	15	10	by	by	ADP
cet-2331	15	11	refineries	refinery	NOUN
cet-2331	15	12	.	.	PUNCT
cet-2331	16	1	these	these	PRON
cet-2331	16	2	can	can	AUX
cet-2331	16	3	be	be	AUX
cet-2331	16	4	better	well	ADV
cet-2331	16	5	exploited	exploit	VERB
cet-2331	16	6	if	if	SCONJ
cet-2331	16	7	their	their	PRON
cet-2331	16	8	composition	composition	NOUN
cet-2331	16	9	and	and	CCONJ
cet-2331	16	10	chemical	chemical	NOUN
cet-2331	16	11	behavior	behavior	NOUN
cet-2331	16	12	is	be	AUX
cet-2331	16	13	known	know	VERB
cet-2331	16	14	,	,	PUNCT
cet-2331	16	15	allowing	allow	VERB
cet-2331	16	16	to	to	PART
cet-2331	16	17	develop	develop	VERB
cet-2331	16	18	appropriated	appropriate	VERB
cet-2331	16	19	conversion	conversion	NOUN
cet-2331	16	20	processes	process	NOUN
cet-2331	16	21	(	(	PUNCT
cet-2331	16	22	müller	müller	NOUN
cet-2331	16	23	at	at	ADP
cet-2331	16	24	al	al	PROPN
cet-2331	16	25	.	.	PROPN
cet-2331	16	26	,	,	PUNCT
cet-2331	16	27	2005	2005	NUM
cet-2331	16	28	)	)	PUNCT
cet-2331	16	29	.	.	PUNCT
cet-2331	17	1	the	the	DET
cet-2331	17	2	conventional	conventional	ADJ
cet-2331	17	3	characterization	characterization	NOUN
cet-2331	17	4	of	of	ADP
cet-2331	17	5	this	this	DET
cet-2331	17	6	type	type	NOUN
cet-2331	17	7	of	of	ADP
cet-2331	17	8	complex	complex	ADJ
cet-2331	17	9	samples	sample	NOUN
cet-2331	17	10	involves	involve	VERB
cet-2331	17	11	multiple	multiple	ADJ
cet-2331	17	12	steps	step	NOUN
cet-2331	17	13	of	of	ADP
cet-2331	17	14	chemical	chemical	ADJ
cet-2331	17	15	separations	separation	NOUN
cet-2331	17	16	,	,	PUNCT
cet-2331	17	17	in	in	ADP
cet-2331	17	18	order	order	NOUN
cet-2331	17	19	to	to	PART
cet-2331	17	20	reduce	reduce	VERB
cet-2331	17	21	the	the	DET
cet-2331	17	22	number	number	NOUN
cet-2331	17	23	of	of	ADP
cet-2331	17	24	compounds	compound	NOUN
cet-2331	17	25	present	present	ADJ
cet-2331	17	26	and	and	CCONJ
cet-2331	17	27	thus	thus	ADV
cet-2331	17	28	simplify	simplify	VERB
cet-2331	17	29	their	their	PRON
cet-2331	17	30	identification	identification	NOUN
cet-2331	17	31	(	(	PUNCT
cet-2331	17	32	marshall	marshall	PROPN
cet-2331	17	33	et	et	PROPN
cet-2331	17	34	al	al	PROPN
cet-2331	17	35	.	.	PROPN
cet-2331	17	36	,	,	PUNCT
cet-2331	17	37	2004	2004	NUM
cet-2331	17	38	)	)	PUNCT
cet-2331	17	39	.	.	PUNCT
cet-2331	18	1	fourier	fourier	PROPN
cet-2331	18	2	transform	transform	VERB
cet-2331	18	3	ion	ion	NOUN
cet-2331	18	4	cyclotron	cyclotron	NOUN
cet-2331	18	5	resonance	resonance	NOUN
cet-2331	18	6	mass	mass	NOUN
cet-2331	18	7	spectrometry	spectrometry	NOUN
cet-2331	18	8	(	(	PUNCT
cet-2331	18	9	ft	ft	PROPN
cet-2331	18	10	-	-	PUNCT
cet-2331	18	11	icr	icr	PROPN
cet-2331	18	12	ms	ms	PROPN
cet-2331	18	13	)	)	PUNCT
cet-2331	18	14	has	have	AUX
cet-2331	18	15	emerged	emerge	VERB
cet-2331	18	16	in	in	ADP
cet-2331	18	17	recent	recent	ADJ
cet-2331	18	18	years	year	NOUN
cet-2331	18	19	as	as	ADP
cet-2331	18	20	the	the	DET
cet-2331	18	21	most	most	ADV
cet-2331	18	22	common	common	ADJ
cet-2331	18	23	technique	technique	NOUN
cet-2331	18	24	for	for	ADP
cet-2331	18	25	analyzing	analyze	VERB
cet-2331	18	26	detailed	detailed	ADJ
cet-2331	18	27	composition	composition	NOUN
cet-2331	18	28	of	of	ADP
cet-2331	18	29	petroleum	petroleum	NOUN
cet-2331	18	30	samples	sample	NOUN
cet-2331	18	31	,	,	PUNCT
cet-2331	18	32	essentially	essentially	ADV
cet-2331	18	33	avoiding	avoid	VERB
cet-2331	18	34	long	long	ADJ
cet-2331	18	35	and	and	CCONJ
cet-2331	18	36	tedious	tedious	ADJ
cet-2331	18	37	separation	separation	NOUN
cet-2331	18	38	processes	process	NOUN
cet-2331	18	39	.	.	PUNCT
cet-2331	19	1	this	this	DET
cet-2331	19	2	technique	technique	NOUN
cet-2331	19	3	offers	offer	VERB
cet-2331	19	4	high	high	ADJ
cet-2331	19	5	resolving	resolving	NOUN
cet-2331	19	6	power	power	NOUN
cet-2331	19	7	and	and	CCONJ
cet-2331	19	8	mass	mass	ADJ
cet-2331	19	9	accuracy	accuracy	NOUN
cet-2331	19	10	,	,	PUNCT
cet-2331	19	11	which	which	PRON
cet-2331	19	12	allows	allow	VERB
cet-2331	19	13	an	an	DET
cet-2331	19	14	unambiguously	unambiguously	ADV
cet-2331	19	15	assignment	assignment	NOUN
cet-2331	19	16	of	of	ADP
cet-2331	19	17	molecular	molecular	ADJ
cet-2331	19	18	formula	formula	NOUN
cet-2331	19	19	(	(	PUNCT
cet-2331	19	20	pakarinen	pakarinen	NOUN
cet-2331	19	21	et	et	PROPN
cet-2331	19	22	al	al	PROPN
cet-2331	19	23	.	.	PROPN
cet-2331	19	24	,	,	PUNCT
cet-2331	19	25	2007	2007	NUM
cet-2331	19	26	)	)	PUNCT
cet-2331	19	27	.	.	PUNCT
cet-2331	20	1	type	type	NOUN
cet-2331	20	2	of	of	ADP
cet-2331	20	3	compounds	compound	NOUN
cet-2331	20	4	detected	detect	VERB
cet-2331	20	5	in	in	ADP
cet-2331	20	6	samples	sample	NOUN
cet-2331	20	7	by	by	ADP
cet-2331	20	8	ft	ft	PROPN
cet-2331	20	9	-	-	PUNCT
cet-2331	20	10	icr	icr	PROPN
cet-2331	20	11	ms	ms	NOUN
cet-2331	20	12	depends	depend	VERB
cet-2331	20	13	on	on	ADP
cet-2331	20	14	the	the	DET
cet-2331	20	15	ionization	ionization	NOUN
cet-2331	20	16	source	source	NOUN
cet-2331	20	17	used	use	VERB
cet-2331	20	18	.	.	PUNCT
cet-2331	21	1	the	the	DET
cet-2331	21	2	electrospray	electrospray	NOUN
cet-2331	21	3	(	(	PUNCT
cet-2331	21	4	esi	esi	ADJ
cet-2331	21	5	)	)	PUNCT
cet-2331	21	6	ionization	ionization	NOUN
cet-2331	21	7	technique	technique	NOUN
cet-2331	21	8	is	be	AUX
cet-2331	21	9	used	use	VERB
cet-2331	21	10	for	for	ADP
cet-2331	21	11	selective	selective	ADJ
cet-2331	21	12	ionization	ionization	NOUN
cet-2331	21	13	of	of	ADP
cet-2331	21	14	polar	polar	ADJ
cet-2331	21	15	molecules	molecule	NOUN
cet-2331	21	16	present	present	ADJ
cet-2331	21	17	in	in	ADP
cet-2331	21	18	petroleum	petroleum	NOUN
cet-2331	21	19	(	(	PUNCT
cet-2331	21	20	marshall	marshall	PROPN
cet-2331	21	21	et	et	PROPN
cet-2331	21	22	al	al	PROPN
cet-2331	21	23	.	.	PROPN
cet-2331	21	24	,	,	PUNCT
cet-2331	21	25	2008	2008	NUM
cet-2331	21	26	)	)	PUNCT
cet-2331	21	27	,	,	PUNCT
cet-2331	21	28	very	very	ADV
cet-2331	21	29	convenient	convenient	ADJ
cet-2331	21	30	due	due	ADP
cet-2331	21	31	to	to	ADP
cet-2331	21	32	the	the	DET
cet-2331	21	33	high	high	ADJ
cet-2331	21	34	heteroatom	heteroatom	NOUN
cet-2331	21	35	content	content	NOUN
cet-2331	21	36	present	present	ADJ
cet-2331	21	37	in	in	ADP
cet-2331	21	38	heavy	heavy	ADJ
cet-2331	21	39	oils	oil	NOUN
cet-2331	21	40	.	.	PUNCT
cet-2331	22	1	doi	doi	NOUN
cet-2331	22	2	:	:	PUNCT
cet-2331	22	3	10.3303	10.3303	NUM
cet-2331	22	4	/	/	SYM
cet-2331	22	5	cet1757268	cet1757268	NOUN
cet-2331	22	6	please	please	INTJ
cet-2331	22	7	cite	cite	VERB
cet-2331	22	8	this	this	DET
cet-2331	22	9	article	article	NOUN
cet-2331	22	10	as	as	ADP
cet-2331	22	11	:	:	PUNCT
cet-2331	22	12	arenas	arenas	PROPN
cet-2331	22	13	-	-	PUNCT
cet-2331	22	14	diaz	diaz	PROPN
cet-2331	22	15	j.p	j.p	PROPN
cet-2331	22	16	.	.	PROPN
cet-2331	22	17	,	,	PUNCT
cet-2331	22	18	palacio	palacio	PROPN
cet-2331	22	19	lozano	lozano	PROPN
cet-2331	22	20	d.c	d.c	PROPN
cet-2331	22	21	.	.	PROPN
cet-2331	22	22	,	,	PUNCT
cet-2331	22	23	ramirez	ramirez	PROPN
cet-2331	22	24	x.	x.	PROPN
cet-2331	22	25	,	,	PUNCT
cet-2331	22	26	cabanzo	cabanzo	PROPN
cet-2331	22	27	r.	r.	PROPN
cet-2331	22	28	,	,	PUNCT
cet-2331	22	29	guzman	guzman	PROPN
cet-2331	22	30	a.	a.	PROPN
cet-2331	22	31	,	,	PUNCT
cet-2331	22	32	mejia	mejia	PROPN
cet-2331	22	33	-	-	PUNCT
cet-2331	22	34	ospino	ospino	PROPN
cet-2331	22	35	e.	e.	PROPN
cet-2331	22	36	,	,	PUNCT
cet-2331	22	37	2017	2017	NUM
cet-2331	22	38	,	,	PUNCT
cet-2331	22	39	chemical	chemical	ADJ
cet-2331	22	40	characterization	characterization	NOUN
cet-2331	22	41	of	of	ADP
cet-2331	22	42	polar	polar	ADJ
cet-2331	22	43	species	specie	NOUN
cet-2331	22	44	in	in	ADP
cet-2331	22	45	colombian	colombian	ADJ
cet-2331	22	46	vacuum	vacuum	NOUN
cet-2331	22	47	residue	residue	NOUN
cet-2331	22	48	and	and	CCONJ
cet-2331	22	49	its	its	PRON
cet-2331	22	50	supercritical	supercritical	ADJ
cet-2331	22	51	fluid	fluid	NOUN
cet-2331	22	52	extraction	extraction	NOUN
cet-2331	22	53	subfractions	subfraction	NOUN
cet-2331	22	54	using	use	VERB
cet-2331	22	55	electrospray	electrospray	ADJ
cet-2331	22	56	ionization	ionization	NOUN
cet-2331	22	57	ft	ft	PROPN
cet-2331	22	58	-	-	PUNCT
cet-2331	22	59	icr	icr	PROPN
cet-2331	22	60	mass	mass	PROPN
cet-2331	22	61	spectrometry	spectrometry	NOUN
cet-2331	22	62	,	,	PUNCT
cet-2331	22	63	chemical	chemical	NOUN
cet-2331	22	64	engineering	engineering	NOUN
cet-2331	22	65	transactions	transaction	NOUN
cet-2331	22	66	,	,	PUNCT
cet-2331	22	67	57	57	NUM
cet-2331	22	68	,	,	PUNCT
cet-2331	22	69	1603	1603	NUM
cet-2331	22	70	-	-	SYM
cet-2331	22	71	1608	1608	NUM
cet-2331	22	72	doi	doi	NOUN
cet-2331	22	73	:	:	PUNCT
cet-2331	22	74	10.3303	10.3303	NUM
cet-2331	22	75	/	/	SYM
cet-2331	22	76	cet1757268	cet1757268	NOUN
cet-2331	22	77	1603	1603	NUM
cet-2331	22	78	fractionating	fractionate	VERB
cet-2331	22	79	petroleum	petroleum	NOUN
cet-2331	22	80	samples	sample	NOUN
cet-2331	22	81	are	be	AUX
cet-2331	22	82	commonly	commonly	ADV
cet-2331	22	83	used	use	VERB
cet-2331	22	84	,	,	PUNCT
cet-2331	22	85	one	one	NUM
cet-2331	22	86	of	of	ADP
cet-2331	22	87	them	they	PRON
cet-2331	22	88	is	be	AUX
cet-2331	22	89	called	call	VERB
cet-2331	22	90	supercritical	supercritical	ADJ
cet-2331	22	91	fluid	fluid	ADJ
cet-2331	22	92	extraction	extraction	NOUN
cet-2331	22	93	and	and	CCONJ
cet-2331	22	94	fractionation	fractionation	NOUN
cet-2331	22	95	(	(	PUNCT
cet-2331	22	96	sfef	sfef	NOUN
cet-2331	22	97	)	)	PUNCT
cet-2331	22	98	,	,	PUNCT
cet-2331	22	99	which	which	PRON
cet-2331	22	100	can	can	AUX
cet-2331	22	101	obtain	obtain	VERB
cet-2331	22	102	high	high	ADJ
cet-2331	22	103	yields	yield	NOUN
cet-2331	22	104	and	and	CCONJ
cet-2331	22	105	allows	allow	VERB
cet-2331	22	106	better	well	ADJ
cet-2331	22	107	characterization	characterization	NOUN
cet-2331	22	108	of	of	ADP
cet-2331	22	109	the	the	DET
cet-2331	22	110	vacuum	vacuum	NOUN
cet-2331	22	111	residue	residue	NOUN
cet-2331	22	112	because	because	SCONJ
cet-2331	22	113	it	it	PRON
cet-2331	22	114	reduces	reduce	VERB
cet-2331	22	115	the	the	DET
cet-2331	22	116	high	high	ADJ
cet-2331	22	117	complexity	complexity	NOUN
cet-2331	22	118	of	of	ADP
cet-2331	22	119	heavy	heavy	ADJ
cet-2331	22	120	oils	oil	NOUN
cet-2331	22	121	(	(	PUNCT
cet-2331	22	122	parra	parra	PROPN
cet-2331	22	123	et	et	PROPN
cet-2331	22	124	al	al	PROPN
cet-2331	22	125	.	.	PROPN
cet-2331	22	126	,	,	PUNCT
cet-2331	22	127	2010	2010	NUM
cet-2331	22	128	)	)	PUNCT
cet-2331	22	129	.	.	PUNCT
cet-2331	23	1	this	this	DET
cet-2331	23	2	work	work	NOUN
cet-2331	23	3	characterizes	characterize	VERB
cet-2331	23	4	a	a	DET
cet-2331	23	5	colombian	colombian	ADJ
cet-2331	23	6	vacuum	vacuum	NOUN
cet-2331	23	7	residue	residue	NOUN
cet-2331	23	8	through	through	ADP
cet-2331	23	9	its	its	PRON
cet-2331	23	10	sfef	sfef	NOUN
cet-2331	23	11	subfractions	subfraction	NOUN
cet-2331	23	12	,	,	PUNCT
cet-2331	23	13	using	use	VERB
cet-2331	23	14	as	as	ADP
cet-2331	23	15	the	the	DET
cet-2331	23	16	analytical	analytical	ADJ
cet-2331	23	17	technique	technique	NOUN
cet-2331	23	18	of	of	ADP
cet-2331	23	19	choice	choice	NOUN
cet-2331	23	20	ft	ft	PROPN
cet-2331	23	21	-	-	PUNCT
cet-2331	23	22	icr	icr	NOUN
cet-2331	23	23	ms	ms	PROPN
cet-2331	23	24	coupled	couple	VERB
cet-2331	23	25	to	to	ADP
cet-2331	23	26	esi	esi	PROPN
cet-2331	23	27	source	source	NOUN
cet-2331	23	28	,	,	PUNCT
cet-2331	23	29	to	to	PART
cet-2331	23	30	explore	explore	VERB
cet-2331	23	31	the	the	DET
cet-2331	23	32	different	different	ADJ
cet-2331	23	33	polar	polar	ADJ
cet-2331	23	34	chemical	chemical	NOUN
cet-2331	23	35	species	specie	NOUN
cet-2331	23	36	existing	exist	VERB
cet-2331	23	37	in	in	ADP
cet-2331	23	38	the	the	DET
cet-2331	23	39	vacuum	vacuum	NOUN
cet-2331	23	40	residue	residue	NOUN
cet-2331	23	41	and	and	CCONJ
cet-2331	23	42	note	note	VERB
cet-2331	23	43	the	the	DET
cet-2331	23	44	advantage	advantage	NOUN
cet-2331	23	45	of	of	ADP
cet-2331	23	46	fractioning	fraction	VERB
cet-2331	23	47	this	this	DET
cet-2331	23	48	kind	kind	NOUN
cet-2331	23	49	of	of	ADP
cet-2331	23	50	complex	complex	ADJ
cet-2331	23	51	samples	sample	NOUN
cet-2331	23	52	.	.	PUNCT
cet-2331	24	1	2	2	X
cet-2331	24	2	.	.	X
cet-2331	24	3	materials	material	NOUN
cet-2331	24	4	and	and	CCONJ
cet-2331	24	5	methods	method	NOUN
cet-2331	24	6	2.1	2.1	NUM
cet-2331	24	7	samples	sample	NOUN
cet-2331	24	8	vacuum	vacuum	NOUN
cet-2331	24	9	residue	residue	NOUN
cet-2331	24	10	(	(	PUNCT
cet-2331	24	11	vr	vr	NOUN
cet-2331	24	12	)	)	PUNCT
cet-2331	24	13	was	be	AUX
cet-2331	24	14	obtained	obtain	VERB
cet-2331	24	15	from	from	ADP
cet-2331	24	16	colombian	colombian	ADJ
cet-2331	24	17	crude	crude	ADJ
cet-2331	24	18	oil	oil	NOUN
cet-2331	24	19	.	.	PUNCT
cet-2331	25	1	five	five	NUM
cet-2331	25	2	cuts	cut	NOUN
cet-2331	25	3	were	be	AUX
cet-2331	25	4	derived	derive	VERB
cet-2331	25	5	from	from	ADP
cet-2331	25	6	vr	vr	PROPN
cet-2331	25	7	subjected	subject	VERB
cet-2331	25	8	to	to	ADP
cet-2331	25	9	sfef	sfef	NOUN
cet-2331	25	10	separation	separation	NOUN
cet-2331	25	11	.	.	PUNCT
cet-2331	26	1	the	the	DET
cet-2331	26	2	supercritical	supercritical	ADJ
cet-2331	26	3	solvent	solvent	NOUN
cet-2331	26	4	was	be	AUX
cet-2331	26	5	n	n	CCONJ
cet-2331	26	6	-	-	PUNCT
cet-2331	26	7	hexane	hexane	NOUN
cet-2331	26	8	and	and	CCONJ
cet-2331	26	9	the	the	DET
cet-2331	26	10	operating	operating	NOUN
cet-2331	26	11	conditions	condition	NOUN
cet-2331	26	12	were	be	AUX
cet-2331	26	13	265	265	NUM
cet-2331	26	14	°	°	ADP
cet-2331	26	15	c	c	NOUN
cet-2331	26	16	and	and	CCONJ
cet-2331	26	17	four	four	NUM
cet-2331	26	18	different	different	ADJ
cet-2331	26	19	pressures	pressure	NOUN
cet-2331	26	20	4.5	4.5	NUM
cet-2331	26	21	,	,	PUNCT
cet-2331	26	22	5.5	5.5	NUM
cet-2331	26	23	,	,	PUNCT
cet-2331	26	24	6.5	6.5	NUM
cet-2331	26	25	and	and	CCONJ
cet-2331	26	26	7.5	7.5	NUM
cet-2331	26	27	mpa	mpa	NOUN
cet-2331	26	28	.	.	PUNCT
cet-2331	27	1	a	a	DET
cet-2331	27	2	subfraction	subfraction	NOUN
cet-2331	27	3	was	be	AUX
cet-2331	27	4	collected	collect	VERB
cet-2331	27	5	for	for	ADP
cet-2331	27	6	each	each	DET
cet-2331	27	7	programmed	program	VERB
cet-2331	27	8	pressure	pressure	NOUN
cet-2331	27	9	and	and	CCONJ
cet-2331	27	10	an	an	DET
cet-2331	27	11	unextractable	unextractable	ADJ
cet-2331	27	12	end	end	NOUN
cet-2331	27	13	-	-	PUNCT
cet-2331	27	14	cut	cut	NOUN
cet-2331	27	15	.	.	PUNCT
cet-2331	28	1	the	the	DET
cet-2331	28	2	sfef	sfef	NOUN
cet-2331	28	3	process	process	NOUN
cet-2331	28	4	mentioned	mention	VERB
cet-2331	28	5	in	in	ADP
cet-2331	28	6	this	this	DET
cet-2331	28	7	work	work	NOUN
cet-2331	28	8	has	have	AUX
cet-2331	28	9	been	be	AUX
cet-2331	28	10	described	describe	VERB
cet-2331	28	11	elsewhere	elsewhere	ADV
cet-2331	28	12	(	(	PUNCT
cet-2331	28	13	parra	parra	PROPN
cet-2331	28	14	et	et	PROPN
cet-2331	28	15	al	al	PROPN
cet-2331	28	16	.	.	PROPN
cet-2331	28	17	,	,	PUNCT
cet-2331	28	18	2010	2010	NUM
cet-2331	28	19	)	)	PUNCT
cet-2331	28	20	.	.	PUNCT
cet-2331	29	1	table	table	NOUN
cet-2331	29	2	1	1	NUM
cet-2331	29	3	summarizes	summarize	NOUN
cet-2331	29	4	some	some	DET
cet-2331	29	5	bulk	bulk	ADJ
cet-2331	29	6	properties	property	NOUN
cet-2331	29	7	of	of	ADP
cet-2331	29	8	the	the	DET
cet-2331	29	9	vr	vr	NOUN
cet-2331	29	10	and	and	CCONJ
cet-2331	29	11	its	its	PRON
cet-2331	29	12	subfractions	subfraction	NOUN
cet-2331	29	13	.	.	PUNCT
cet-2331	30	1	table	table	NOUN
cet-2331	30	2	1	1	NUM
cet-2331	30	3	:	:	PUNCT
cet-2331	30	4	properties	property	NOUN
cet-2331	30	5	of	of	ADP
cet-2331	30	6	the	the	DET
cet-2331	30	7	vacuum	vacuum	NOUN
cet-2331	30	8	residue	residue	NOUN
cet-2331	30	9	and	and	CCONJ
cet-2331	30	10	its	its	PRON
cet-2331	30	11	subfractions	subfraction	NOUN
cet-2331	30	12	vacuum	vacuum	NOUN
cet-2331	30	13	residue	residue	NOUN
cet-2331	30	14	(	(	PUNCT
cet-2331	30	15	vr	vr	NOUN
cet-2331	30	16	)	)	PUNCT
cet-2331	30	17	4.5	4.5	NUM
cet-2331	30	18	mpa	mpa	PROPN
cet-2331	30	19	(	(	PUNCT
cet-2331	30	20	s1	s1	PROPN
cet-2331	30	21	)	)	PUNCT
cet-2331	30	22	5.5	5.5	NUM
cet-2331	30	23	mpa	mpa	NOUN
cet-2331	30	24	(	(	PUNCT
cet-2331	30	25	s2	s2	PROPN
cet-2331	30	26	)	)	PUNCT
cet-2331	30	27	6.5	6.5	NUM
cet-2331	30	28	mpa	mpa	NOUN
cet-2331	30	29	(	(	PUNCT
cet-2331	30	30	s3	s3	PROPN
cet-2331	30	31	)	)	PUNCT
cet-2331	30	32	7.5	7.5	NUM
cet-2331	30	33	mpa	mpa	NOUN
cet-2331	30	34	(	(	PUNCT
cet-2331	30	35	s4	s4	PROPN
cet-2331	30	36	)	)	PUNCT
cet-2331	30	37	end	end	NOUN
cet-2331	30	38	-	-	PUNCT
cet-2331	30	39	cut	cut	VERB
cet-2331	30	40	(	(	PUNCT
cet-2331	30	41	s5	s5	NOUN
cet-2331	30	42	)	)	PUNCT
cet-2331	30	43	yield	yield	NOUN
cet-2331	30	44	(	(	PUNCT
cet-2331	30	45	wt	wt	NUM
cet-2331	30	46	%	%	NOUN
cet-2331	30	47	)	)	PUNCT
cet-2331	30	48	12.57	12.57	NUM
cet-2331	30	49	22.38	22.38	NUM
cet-2331	30	50	23.74	23.74	NUM
cet-2331	30	51	14.49	14.49	NUM
cet-2331	30	52	26.82	26.82	NUM
cet-2331	30	53	density	density	NOUN
cet-2331	30	54	(	(	PUNCT
cet-2331	30	55	g	g	NOUN
cet-2331	30	56	/	/	SYM
cet-2331	30	57	cm3	cm3	NOUN
cet-2331	30	58	)	)	PUNCT
cet-2331	30	59	1.0251	1.0251	NUM
cet-2331	30	60	0.9766	0.9766	NUM
cet-2331	30	61	0.9838	0.9838	NUM
cet-2331	30	62	0.9897	0.9897	NUM
cet-2331	30	63	1.0030	1.0030	NUM
cet-2331	30	64	1.1296	1.1296	NUM
cet-2331	30	65	sulfur	sulfur	NOUN
cet-2331	30	66	(	(	PUNCT
cet-2331	30	67	wt	wt	NOUN
cet-2331	30	68	%	%	NOUN
cet-2331	30	69	)	)	PUNCT
cet-2331	30	70	1.85	1.85	NUM
cet-2331	30	71	1.45	1.45	NUM
cet-2331	30	72	1.52	1.52	NUM
cet-2331	30	73	1.64	1.64	NUM
cet-2331	30	74	1.68	1.68	NUM
cet-2331	30	75	2.52	2.52	NUM
cet-2331	30	76	carbon	carbon	NOUN
cet-2331	30	77	residue	residue	NOUN
cet-2331	30	78	(	(	PUNCT
cet-2331	30	79	wt%	wt%	NUM
cet-2331	30	80	)	)	PUNCT
cet-2331	30	81	19.50	19.50	NUM
cet-2331	30	82	6.01	6.01	NUM
cet-2331	30	83	8.60	8.60	NUM
cet-2331	30	84	11.77	11.77	NUM
cet-2331	30	85	15.16	15.16	NUM
cet-2331	30	86	55.20	55.20	NUM
cet-2331	30	87	saturates	saturate	NOUN
cet-2331	30	88	(	(	PUNCT
cet-2331	30	89	wt	wt	NUM
cet-2331	30	90	%	%	NOUN
cet-2331	30	91	)	)	PUNCT
cet-2331	30	92	11.63	11.63	NUM
cet-2331	30	93	35.40	35.40	NUM
cet-2331	30	94	23.01	23.01	NUM
cet-2331	30	95	14.15	14.15	NUM
cet-2331	30	96	8.90	8.90	NUM
cet-2331	30	97	8.75	8.75	NUM
cet-2331	30	98	aromatics	aromatic	NOUN
cet-2331	30	99	(	(	PUNCT
cet-2331	30	100	wt	wt	NOUN
cet-2331	30	101	%	%	NOUN
cet-2331	30	102	)	)	PUNCT
cet-2331	31	1	46.34	46.34	NUM
cet-2331	31	2	50.70	50.70	NUM
cet-2331	31	3	59.23	59.23	NUM
cet-2331	31	4	57.70	57.70	NUM
cet-2331	31	5	58.99	58.99	NUM
cet-2331	31	6	24.77	24.77	NUM
cet-2331	31	7	resins	resin	NOUN
cet-2331	31	8	(	(	PUNCT
cet-2331	31	9	wt	wt	NUM
cet-2331	31	10	%	%	NOUN
cet-2331	31	11	)	)	PUNCT
cet-2331	31	12	37.12	37.12	NUM
cet-2331	31	13	13.1	13.1	NUM
cet-2331	31	14	17.04	17.04	NUM
cet-2331	31	15	27.91	27.91	NUM
cet-2331	31	16	31.55	31.55	NUM
cet-2331	31	17	17.07	17.07	NUM
cet-2331	31	18	asphaltenes	asphaltene	NOUN
cet-2331	31	19	(	(	PUNCT
cet-2331	31	20	wt	wt	NUM
cet-2331	31	21	%	%	NOUN
cet-2331	31	22	)	)	PUNCT
cet-2331	31	23	4.91	4.91	NUM
cet-2331	31	24	0.70	0.70	NUM
cet-2331	31	25	0.73	0.73	NUM
cet-2331	31	26	0.24	0.24	NUM
cet-2331	31	27	0.56	0.56	NUM
cet-2331	31	28	49.41	49.41	NUM
cet-2331	31	29	2.2	2.2	NUM
cet-2331	31	30	esi	esi	NOUN
cet-2331	31	31	ft	ft	PROPN
cet-2331	31	32	-	-	PUNCT
cet-2331	31	33	icr	icr	NOUN
cet-2331	31	34	ms	ms	NOUN
cet-2331	31	35	analysis	analysis	NOUN
cet-2331	31	36	mass	mass	PROPN
cet-2331	31	37	spectra	spectra	NOUN
cet-2331	31	38	were	be	AUX
cet-2331	31	39	obtained	obtain	VERB
cet-2331	31	40	using	use	VERB
cet-2331	31	41	a	a	DET
cet-2331	31	42	bruker	bruker	NOUN
cet-2331	31	43	solarix	solarix	NOUN
cet-2331	31	44	15	15	NUM
cet-2331	31	45	t	t	PROPN
cet-2331	31	46	ft	ft	PROPN
cet-2331	31	47	-	-	PUNCT
cet-2331	31	48	icr	icr	PROPN
cet-2331	31	49	mass	mass	PROPN
cet-2331	31	50	spectrometer	spectrometer	NOUN
cet-2331	31	51	(	(	PUNCT
cet-2331	31	52	bruker	bruker	PROPN
cet-2331	31	53	daltonics	daltonics	PROPN
cet-2331	31	54	,	,	PUNCT
cet-2331	31	55	billerica	billerica	PROPN
cet-2331	31	56	,	,	PUNCT
cet-2331	31	57	ma	ma	PROPN
cet-2331	31	58	)	)	PUNCT
cet-2331	31	59	equipped	equip	VERB
cet-2331	31	60	with	with	ADP
cet-2331	31	61	a	a	DET
cet-2331	31	62	commercially	commercially	ADV
cet-2331	31	63	available	available	ADJ
cet-2331	31	64	electrospray	electrospray	NOUN
cet-2331	31	65	source	source	NOUN
cet-2331	31	66	.	.	PUNCT
cet-2331	32	1	vr	vr	PROPN
cet-2331	32	2	and	and	CCONJ
cet-2331	32	3	its	its	PRON
cet-2331	32	4	subfractions	subfraction	NOUN
cet-2331	32	5	were	be	AUX
cet-2331	32	6	diluted	dilute	VERB
cet-2331	32	7	in	in	ADP
cet-2331	32	8	40:60	40:60	NUM
cet-2331	32	9	(	(	PUNCT
cet-2331	32	10	v	v	NOUN
cet-2331	32	11	/	/	SYM
cet-2331	32	12	v	v	NOUN
cet-2331	32	13	)	)	PUNCT
cet-2331	32	14	toluene	toluene	NOUN
cet-2331	32	15	/	/	SYM
cet-2331	32	16	methanol	methanol	NOUN
cet-2331	32	17	to	to	PART
cet-2331	32	18	yield	yield	VERB
cet-2331	32	19	a	a	DET
cet-2331	32	20	0.05	0.05	NUM
cet-2331	32	21	mg	mg	NUM
cet-2331	32	22	/	/	SYM
cet-2331	32	23	ml	ml	NOUN
cet-2331	32	24	solution	solution	NOUN
cet-2331	32	25	(	(	PUNCT
cet-2331	32	26	samples	sample	NOUN
cet-2331	32	27	s1	s1	NOUN
cet-2331	32	28	,	,	PUNCT
cet-2331	32	29	s2	s2	NOUN
cet-2331	32	30	and	and	CCONJ
cet-2331	32	31	s3	s3	PROPN
cet-2331	32	32	)	)	PUNCT
cet-2331	32	33	,	,	PUNCT
cet-2331	32	34	and	and	CCONJ
cet-2331	32	35	0.10	0.10	NUM
cet-2331	32	36	mg	mg	NUM
cet-2331	32	37	/	/	SYM
cet-2331	32	38	ml	ml	PROPN
cet-2331	32	39	(	(	PUNCT
cet-2331	32	40	samples	sample	NOUN
cet-2331	32	41	s4	s4	PROPN
cet-2331	32	42	,	,	PUNCT
cet-2331	32	43	s5	s5	PROPN
cet-2331	32	44	and	and	CCONJ
cet-2331	32	45	vr	vr	PROPN
cet-2331	32	46	)	)	PUNCT
cet-2331	32	47	.	.	PUNCT
cet-2331	33	1	acetic	acetic	ADJ
cet-2331	33	2	acid	acid	NOUN
cet-2331	33	3	was	be	AUX
cet-2331	33	4	added	add	VERB
cet-2331	33	5	(	(	PUNCT
cet-2331	33	6	10	10	NUM
cet-2331	33	7	µl	µl	NOUN
cet-2331	33	8	to	to	ADP
cet-2331	33	9	each	each	DET
cet-2331	33	10	1	1	NUM
cet-2331	33	11	ml	ml	NOUN
cet-2331	33	12	of	of	ADP
cet-2331	33	13	sample	sample	NOUN
cet-2331	33	14	solution	solution	NOUN
cet-2331	33	15	)	)	PUNCT
cet-2331	33	16	to	to	PART
cet-2331	33	17	facilitate	facilitate	VERB
cet-2331	33	18	protonation	protonation	NOUN
cet-2331	33	19	of	of	ADP
cet-2331	33	20	basic	basic	ADJ
cet-2331	33	21	compounds	compound	NOUN
cet-2331	33	22	by	by	ADP
cet-2331	33	23	positive	positive	ADJ
cet-2331	33	24	ion	ion	NOUN
cet-2331	33	25	mode	mode	NOUN
cet-2331	33	26	,	,	PUNCT
cet-2331	33	27	and	and	CCONJ
cet-2331	33	28	for	for	ADP
cet-2331	33	29	negative	negative	ADJ
cet-2331	33	30	ion	ion	NOUN
cet-2331	33	31	mode	mode	NOUN
cet-2331	33	32	,	,	PUNCT
cet-2331	33	33	ammonium	ammonium	NOUN
cet-2331	33	34	hydroxide	hydroxide	NOUN
cet-2331	33	35	was	be	AUX
cet-2331	33	36	added	add	VERB
cet-2331	33	37	(	(	PUNCT
cet-2331	33	38	10	10	NUM
cet-2331	33	39	µl	µl	NOUN
cet-2331	33	40	to	to	ADP
cet-2331	33	41	each	each	DET
cet-2331	33	42	1	1	NUM
cet-2331	33	43	ml	ml	NOUN
cet-2331	33	44	of	of	ADP
cet-2331	33	45	sample	sample	NOUN
cet-2331	33	46	solution	solution	NOUN
cet-2331	33	47	)	)	PUNCT
cet-2331	33	48	to	to	PART
cet-2331	33	49	promote	promote	VERB
cet-2331	33	50	deprotonation	deprotonation	NOUN
cet-2331	33	51	of	of	ADP
cet-2331	33	52	acidic	acidic	ADJ
cet-2331	33	53	compounds	compound	NOUN
cet-2331	33	54	.	.	PUNCT
cet-2331	34	1	prepared	prepared	ADJ
cet-2331	34	2	solutions	solution	NOUN
cet-2331	34	3	were	be	AUX
cet-2331	34	4	directly	directly	ADV
cet-2331	34	5	infused	infuse	VERB
cet-2331	34	6	at	at	ADP
cet-2331	34	7	a	a	DET
cet-2331	34	8	flow	flow	NOUN
cet-2331	34	9	rate	rate	NOUN
cet-2331	34	10	of	of	ADP
cet-2331	34	11	300	300	NUM
cet-2331	34	12	µl	µl	NOUN
cet-2331	34	13	/	/	SYM
cet-2331	34	14	h.	h.	NOUN
cet-2331	34	15	nitrogen	nitrogen	PROPN
cet-2331	34	16	was	be	AUX
cet-2331	34	17	used	use	VERB
cet-2331	34	18	as	as	ADP
cet-2331	34	19	the	the	DET
cet-2331	34	20	drying	dry	VERB
cet-2331	34	21	and	and	CCONJ
cet-2331	34	22	nebulizing	nebulize	VERB
cet-2331	34	23	gas	gas	NOUN
cet-2331	34	24	.	.	PUNCT
cet-2331	35	1	the	the	DET
cet-2331	35	2	typical	typical	ADJ
cet-2331	35	3	esi	esi	PROPN
cet-2331	35	4	conditions	condition	NOUN
cet-2331	35	5	were	be	AUX
cet-2331	35	6	:	:	PUNCT
cet-2331	35	7	a	a	DET
cet-2331	35	8	drying	dry	VERB
cet-2331	35	9	gas	gas	NOUN
cet-2331	35	10	temperature	temperature	NOUN
cet-2331	35	11	of	of	ADP
cet-2331	35	12	200	200	NUM
cet-2331	35	13	°	°	NOUN
cet-2331	35	14	c	c	NOUN
cet-2331	35	15	with	with	ADP
cet-2331	35	16	a	a	DET
cet-2331	35	17	flow	flow	NOUN
cet-2331	35	18	rate	rate	NOUN
cet-2331	35	19	of	of	ADP
cet-2331	35	20	4.0	4.0	NUM
cet-2331	35	21	l	l	NOUN
cet-2331	35	22	/	/	SYM
cet-2331	35	23	min	min	NOUN
cet-2331	35	24	;	;	PUNCT
cet-2331	35	25	a	a	DET
cet-2331	35	26	capillary	capillary	ADJ
cet-2331	35	27	voltage	voltage	NOUN
cet-2331	35	28	of	of	ADP
cet-2331	35	29	3000	3000	NUM
cet-2331	35	30	-	-	SYM
cet-2331	35	31	4000	4000	NUM
cet-2331	35	32	v	v	NOUN
cet-2331	35	33	;	;	PUNCT
cet-2331	35	34	an	an	DET
cet-2331	35	35	ion	ion	NOUN
cet-2331	35	36	accumulation	accumulation	NOUN
cet-2331	35	37	time	time	NOUN
cet-2331	35	38	in	in	ADP
cet-2331	35	39	the	the	DET
cet-2331	35	40	collision	collision	NOUN
cet-2331	35	41	cell	cell	NOUN
cet-2331	35	42	of	of	ADP
cet-2331	35	43	0.010	0.010	NUM
cet-2331	35	44	s	s	NOUN
cet-2331	35	45	which	which	PRON
cet-2331	35	46	was	be	AUX
cet-2331	35	47	followed	follow	VERB
cet-2331	35	48	by	by	ADP
cet-2331	35	49	a	a	DET
cet-2331	35	50	timeof	timeof	NOUN
cet-2331	35	51	-	-	PUNCT
cet-2331	35	52	flight	flight	NOUN
cet-2331	35	53	of	of	ADP
cet-2331	35	54	0.1	0.1	NUM
cet-2331	35	55	s	s	NOUN
cet-2331	35	56	to	to	PART
cet-2331	35	57	transfer	transfer	VERB
cet-2331	35	58	the	the	DET
cet-2331	35	59	ions	ion	NOUN
cet-2331	35	60	to	to	ADP
cet-2331	35	61	the	the	DET
cet-2331	35	62	icr	icr	PROPN
cet-2331	35	63	cell	cell	NOUN
cet-2331	35	64	.	.	PUNCT
cet-2331	36	1	time	time	NOUN
cet-2331	36	2	-	-	PUNCT
cet-2331	36	3	domain	domain	NOUN
cet-2331	36	4	transient	transient	NOUN
cet-2331	36	5	signals	signal	NOUN
cet-2331	36	6	were	be	AUX
cet-2331	36	7	accumulated	accumulate	VERB
cet-2331	36	8	and	and	CCONJ
cet-2331	36	9	averaged	average	VERB
cet-2331	36	10	(	(	PUNCT
cet-2331	36	11	100	100	NUM
cet-2331	36	12	scans	scan	NOUN
cet-2331	36	13	)	)	PUNCT
cet-2331	36	14	to	to	PART
cet-2331	36	15	enhanced	enhance	VERB
cet-2331	36	16	the	the	DET
cet-2331	36	17	signal	signal	NOUN
cet-2331	36	18	-	-	PUNCT
cet-2331	36	19	to	to	ADP
cet-2331	36	20	-	-	PUNCT
cet-2331	36	21	noise	noise	NOUN
cet-2331	36	22	ratio	ratio	NOUN
cet-2331	36	23	of	of	ADP
cet-2331	36	24	each	each	DET
cet-2331	36	25	spectrum	spectrum	NOUN
cet-2331	36	26	in	in	ADP
cet-2331	36	27	four	four	NUM
cet-2331	36	28	mega	mega	ADJ
cet-2331	36	29	data	datum	NOUN
cet-2331	36	30	size	size	NOUN
cet-2331	36	31	.	.	PUNCT
cet-2331	37	1	ft	ft	PROPN
cet-2331	37	2	-	-	PUNCT
cet-2331	37	3	icr	icr	PROPN
cet-2331	37	4	mass	mass	PROPN
cet-2331	37	5	spectra	spectra	PROPN
cet-2331	37	6	were	be	AUX
cet-2331	37	7	initially	initially	ADV
cet-2331	37	8	externally	externally	ADV
cet-2331	37	9	calibrated	calibrate	VERB
cet-2331	37	10	using	use	VERB
cet-2331	37	11	a	a	DET
cet-2331	37	12	0.05	0.05	NUM
cet-2331	37	13	mg	mg	NUM
cet-2331	37	14	/	/	SYM
cet-2331	37	15	ml	ml	X
cet-2331	37	16	natfa	natfa	ADJ
cet-2331	37	17	solution	solution	NOUN
cet-2331	37	18	,	,	PUNCT
cet-2331	37	19	and	and	CCONJ
cet-2331	37	20	then	then	ADV
cet-2331	37	21	externally	externally	ADV
cet-2331	37	22	calibrated	calibrate	VERB
cet-2331	37	23	using	use	VERB
cet-2331	37	24	a	a	DET
cet-2331	37	25	set	set	NOUN
cet-2331	37	26	of	of	ADP
cet-2331	37	27	extended	extended	ADJ
cet-2331	37	28	homologous	homologous	ADJ
cet-2331	37	29	alkylated	alkylate	VERB
cet-2331	37	30	nitrogen	nitrogen	NOUN
cet-2331	37	31	compounds	compound	VERB
cet-2331	37	32	abundant	abundant	ADJ
cet-2331	37	33	in	in	ADP
cet-2331	37	34	the	the	DET
cet-2331	37	35	samples	sample	NOUN
cet-2331	37	36	within	within	ADP
cet-2331	37	37	the	the	DET
cet-2331	37	38	mass	mass	ADJ
cet-2331	37	39	range	range	NOUN
cet-2331	37	40	of	of	ADP
cet-2331	37	41	300	300	NUM
cet-2331	37	42	-	-	SYM
cet-2331	37	43	1200	1200	NUM
cet-2331	37	44	da	da	X
cet-2331	37	45	.	.	PUNCT
cet-2331	37	46	mass	mass	PROPN
cet-2331	37	47	spectra	spectra	PROPN
cet-2331	37	48	were	be	AUX
cet-2331	37	49	processed	process	VERB
cet-2331	37	50	using	use	VERB
cet-2331	37	51	custom	custom	NOUN
cet-2331	37	52	software	software	NOUN
cet-2331	37	53	,	,	PUNCT
cet-2331	37	54	petroorg	petroorg	X
cet-2331	37	55	(	(	PUNCT
cet-2331	37	56	the	the	DET
cet-2331	37	57	florida	florida	PROPN
cet-2331	37	58	state	state	PROPN
cet-2331	37	59	university	university	PROPN
cet-2331	37	60	)	)	PUNCT
cet-2331	37	61	.	.	PUNCT
cet-2331	38	1	molecular	molecular	ADJ
cet-2331	38	2	formulas	formula	NOUN
cet-2331	38	3	were	be	AUX
cet-2331	38	4	determined	determine	VERB
cet-2331	38	5	on	on	ADP
cet-2331	38	6	the	the	DET
cet-2331	38	7	basis	basis	NOUN
cet-2331	38	8	of	of	ADP
cet-2331	38	9	the	the	DET
cet-2331	38	10	m	m	PROPN
cet-2331	38	11	/	/	SYM
cet-2331	38	12	z	z	NOUN
cet-2331	38	13	values	value	NOUN
cet-2331	38	14	.	.	PUNCT
cet-2331	39	1	from	from	ADP
cet-2331	39	2	the	the	DET
cet-2331	39	3	elemental	elemental	ADJ
cet-2331	39	4	composition	composition	NOUN
cet-2331	39	5	(	(	PUNCT
cet-2331	39	6	cchhnnooss	cchhnnooss	NOUN
cet-2331	39	7	)	)	PUNCT
cet-2331	39	8	it	it	PRON
cet-2331	39	9	is	be	AUX
cet-2331	39	10	possible	possible	ADJ
cet-2331	39	11	to	to	PART
cet-2331	39	12	obtain	obtain	VERB
cet-2331	39	13	the	the	DET
cet-2331	39	14	double	double	ADJ
cet-2331	39	15	bond	bond	NOUN
cet-2331	39	16	equivalents	equivalent	NOUN
cet-2331	39	17	(	(	PUNCT
cet-2331	39	18	dbe	dbe	PROPN
cet-2331	39	19	)	)	PUNCT
cet-2331	39	20	according	accord	VERB
cet-2331	39	21	to	to	ADP
cet-2331	39	22	eq(1	eq(1	PROPN
cet-2331	39	23	)	)	PUNCT
cet-2331	39	24	,	,	PUNCT
cet-2331	39	25	where	where	SCONJ
cet-2331	39	26	c	c	X
cet-2331	39	27	,	,	PUNCT
cet-2331	39	28	h	h	NOUN
cet-2331	39	29	and	and	CCONJ
cet-2331	39	30	n	n	PROPN
cet-2331	39	31	are	be	AUX
cet-2331	39	32	the	the	DET
cet-2331	39	33	numbers	number	NOUN
cet-2331	39	34	of	of	ADP
cet-2331	39	35	carbon	carbon	NOUN
cet-2331	39	36	,	,	PUNCT
cet-2331	39	37	hydrogen	hydrogen	NOUN
cet-2331	39	38	,	,	PUNCT
cet-2331	39	39	and	and	CCONJ
cet-2331	39	40	nitrogen	nitrogen	NOUN
cet-2331	39	41	atoms	atom	NOUN
cet-2331	39	42	,	,	PUNCT
cet-2331	39	43	respectively	respectively	ADV
cet-2331	39	44	.	.	PUNCT
cet-2331	40	1	dbe	dbe	PROPN
cet-2331	40	2	is	be	AUX
cet-2331	40	3	defined	define	VERB
cet-2331	40	4	as	as	ADP
cet-2331	40	5	the	the	DET
cet-2331	40	6	number	number	NOUN
cet-2331	40	7	rings	ring	NOUN
cet-2331	40	8	plus	plus	CCONJ
cet-2331	40	9	the	the	DET
cet-2331	40	10	number	number	NOUN
cet-2331	40	11	of	of	ADP
cet-2331	40	12	doubles	double	VERB
cet-2331	40	13	bonds	bond	NOUN
cet-2331	40	14	in	in	ADP
cet-2331	40	15	a	a	DET
cet-2331	40	16	chemical	chemical	NOUN
cet-2331	40	17	structure	structure	NOUN
cet-2331	40	18	.	.	PUNCT
cet-2331	41	1	the	the	DET
cet-2331	41	2	degree	degree	NOUN
cet-2331	41	3	of	of	ADP
cet-2331	41	4	aromaticity	aromaticity	NOUN
cet-2331	41	5	of	of	ADP
cet-2331	41	6	a	a	DET
cet-2331	41	7	compound	compound	NOUN
cet-2331	41	8	can	can	AUX
cet-2331	41	9	be	be	AUX
cet-2331	41	10	related	relate	VERB
cet-2331	41	11	directly	directly	ADV
cet-2331	41	12	to	to	ADP
cet-2331	41	13	its	its	PRON
cet-2331	41	14	dbe	dbe	PROPN
cet-2331	41	15	value	value	NOUN
cet-2331	41	16	.	.	PUNCT
cet-2331	42	1	𝐷𝐵𝐸	𝐷𝐵𝐸	NOUN
cet-2331	42	2	=	=	SYM
cet-2331	42	3	𝑐	𝑐	NOUN
cet-2331	42	4	−	−	NOUN
cet-2331	42	5	ℎ/2	ℎ/2	NOUN
cet-2331	42	6	+	+	CCONJ
cet-2331	42	7	𝑛/2	𝑛/2	PRON
cet-2331	42	8	+	+	CCONJ
cet-2331	42	9	1	1	NUM
cet-2331	42	10	(	(	PUNCT
cet-2331	42	11	1	1	NUM
cet-2331	42	12	)	)	PUNCT
cet-2331	42	13	3	3	NUM
cet-2331	42	14	.	.	PUNCT
cet-2331	42	15	results	result	VERB
cet-2331	42	16	the	the	DET
cet-2331	42	17	heteroatom	heteroatom	NOUN
cet-2331	42	18	class	class	NOUN
cet-2331	42	19	distribution	distribution	NOUN
cet-2331	42	20	obtained	obtain	VERB
cet-2331	42	21	from	from	ADP
cet-2331	42	22	positive	positive	ADJ
cet-2331	42	23	and	and	CCONJ
cet-2331	42	24	negative	negative	ADJ
cet-2331	42	25	-	-	PUNCT
cet-2331	42	26	mode	mode	NOUN
cet-2331	42	27	esi	esi	PROPN
cet-2331	42	28	ft	ft	PROPN
cet-2331	42	29	-	-	PUNCT
cet-2331	42	30	icr	icr	PROPN
cet-2331	42	31	analyses	analysis	NOUN
cet-2331	42	32	are	be	AUX
cet-2331	42	33	shown	show	VERB
cet-2331	42	34	in	in	ADP
cet-2331	42	35	figure	figure	NOUN
cet-2331	42	36	1	1	NUM
cet-2331	42	37	and	and	CCONJ
cet-2331	42	38	figure	figure	VERB
cet-2331	42	39	2	2	NUM
cet-2331	42	40	,	,	PUNCT
cet-2331	42	41	respectively	respectively	ADV
cet-2331	42	42	.	.	PUNCT
cet-2331	43	1	only	only	ADV
cet-2331	43	2	heteroatom	heteroatom	NOUN
cet-2331	43	3	classes	class	NOUN
cet-2331	43	4	with	with	ADP
cet-2331	43	5	considerable	considerable	ADJ
cet-2331	43	6	relative	relative	ADJ
cet-2331	43	7	abundance	abundance	NOUN
cet-2331	43	8	(	(	PUNCT
cet-2331	43	9	≥1	≥1	NUM
cet-2331	43	10	%	%	NOUN
cet-2331	43	11	)	)	PUNCT
cet-2331	43	12	are	be	AUX
cet-2331	43	13	presented	present	VERB
cet-2331	43	14	.	.	PUNCT
cet-2331	44	1	basic	basic	ADJ
cet-2331	44	2	polar	polar	ADJ
cet-2331	44	3	compounds	compound	NOUN
cet-2331	44	4	were	be	AUX
cet-2331	44	5	detected	detect	VERB
cet-2331	44	6	by	by	ADP
cet-2331	44	7	positive	positive	ADJ
cet-2331	44	8	-	-	PUNCT
cet-2331	44	9	ion	ion	NOUN
cet-2331	44	10	esi	esi	PROPN
cet-2331	44	11	ft	ft	PROPN
cet-2331	44	12	-	-	PUNCT
cet-2331	44	13	icr	icr	PROPN
cet-2331	44	14	and	and	CCONJ
cet-2331	44	15	high	high	ADJ
cet-2331	44	16	abundance	abundance	NOUN
cet-2331	44	17	of	of	ADP
cet-2331	44	18	n1	n1	ADJ
cet-2331	44	19	class	class	NOUN
cet-2331	44	20	predominates	predominate	VERB
cet-2331	44	21	in	in	ADP
cet-2331	44	22	the	the	DET
cet-2331	44	23	distributions	distribution	NOUN
cet-2331	44	24	of	of	ADP
cet-2331	44	25	all	all	DET
cet-2331	44	26	samples	sample	NOUN
cet-2331	44	27	,	,	PUNCT
cet-2331	44	28	which	which	PRON
cet-2331	44	29	can	can	AUX
cet-2331	44	30	be	be	AUX
cet-2331	44	31	associated	associate	VERB
cet-2331	44	32	to	to	ADP
cet-2331	44	33	pyridine	pyridine	ADJ
cet-2331	44	34	-	-	PUNCT
cet-2331	44	35	like	like	ADJ
cet-2331	44	36	structures	structure	NOUN
cet-2331	44	37	.	.	PUNCT
cet-2331	45	1	pyridine	pyridine	NOUN
cet-2331	45	2	motion	motion	NOUN
cet-2331	45	3	would	would	AUX
cet-2331	45	4	also	also	ADV
cet-2331	45	5	be	be	AUX
cet-2331	45	6	present	present	ADJ
cet-2331	45	7	as	as	ADP
cet-2331	45	8	part	part	NOUN
cet-2331	45	9	of	of	ADP
cet-2331	45	10	di	di	NOUN
cet-2331	45	11	-	-	PUNCT
cet-2331	45	12	heteroatom	heteroatom	PROPN
cet-2331	45	13	classes	class	NOUN
cet-2331	45	14	as	as	ADP
cet-2331	45	15	n1o1	n1o1	ADV
cet-2331	45	16	and	and	CCONJ
cet-2331	45	17	n1s1	n1s1	ADP
cet-2331	45	18	,	,	PUNCT
cet-2331	45	19	as	as	ADV
cet-2331	45	20	well	well	ADV
cet-2331	45	21	as	as	ADP
cet-2331	45	22	for	for	ADP
cet-2331	45	23	tri1604	tri1604	PROPN
cet-2331	45	24	heteroatom	heteroatom	PROPN
cet-2331	45	25	class	class	PROPN
cet-2331	45	26	n1o1s1	n1o1s1	PROPN
cet-2331	45	27	.	.	PROPN
cet-2331	46	1	for	for	ADP
cet-2331	46	2	n2	n2	ADJ
cet-2331	46	3	class	class	NOUN
cet-2331	46	4	,	,	PUNCT
cet-2331	46	5	at	at	ADV
cet-2331	46	6	least	least	ADJ
cet-2331	46	7	one	one	NUM
cet-2331	46	8	of	of	ADP
cet-2331	46	9	the	the	DET
cet-2331	46	10	two	two	NUM
cet-2331	46	11	nitrogen	nitrogen	NOUN
cet-2331	46	12	atoms	atom	NOUN
cet-2331	46	13	in	in	ADP
cet-2331	46	14	pyridine	pyridine	ADJ
cet-2331	46	15	form	form	NOUN
cet-2331	46	16	is	be	AUX
cet-2331	46	17	possible	possible	ADJ
cet-2331	46	18	,	,	PUNCT
cet-2331	46	19	so	so	ADV
cet-2331	46	20	also	also	ADV
cet-2331	46	21	these	these	DET
cet-2331	46	22	species	specie	NOUN
cet-2331	46	23	could	could	AUX
cet-2331	46	24	contain	contain	VERB
cet-2331	46	25	two	two	NUM
cet-2331	46	26	pyridine	pyridine	NOUN
cet-2331	46	27	rings	ring	NOUN
cet-2331	46	28	.	.	PUNCT
cet-2331	47	1	the	the	DET
cet-2331	47	2	sfef	sfef	PROPN
cet-2331	47	3	separation	separation	NOUN
cet-2331	47	4	allowed	allow	VERB
cet-2331	47	5	detecting	detect	VERB
cet-2331	47	6	new	new	ADJ
cet-2331	47	7	classes	class	NOUN
cet-2331	47	8	such	such	ADJ
cet-2331	47	9	as	as	ADP
cet-2331	47	10	o1s1	o1s1	PROPN
cet-2331	47	11	and	and	CCONJ
cet-2331	47	12	n2s1	n2s1	PROPN
cet-2331	47	13	which	which	PRON
cet-2331	47	14	were	be	AUX
cet-2331	47	15	undetectable	undetectable	ADJ
cet-2331	47	16	in	in	ADP
cet-2331	47	17	the	the	DET
cet-2331	47	18	whole	whole	ADJ
cet-2331	47	19	vacuum	vacuum	NOUN
cet-2331	47	20	residue	residue	NOUN
cet-2331	47	21	.	.	PUNCT
cet-2331	48	1	figure	figure	NOUN
cet-2331	48	2	1	1	NUM
cet-2331	48	3	:	:	PUNCT
cet-2331	48	4	heteroatom	heteroatom	NOUN
cet-2331	48	5	class	class	NOUN
cet-2331	48	6	distribution	distribution	NOUN
cet-2331	48	7	for	for	ADP
cet-2331	48	8	vacuum	vacuum	NOUN
cet-2331	48	9	residue	residue	NOUN
cet-2331	48	10	and	and	CCONJ
cet-2331	48	11	its	its	PRON
cet-2331	48	12	subfractions	subfraction	NOUN
cet-2331	48	13	from	from	ADP
cet-2331	48	14	positive	positive	ADJ
cet-2331	48	15	-	-	PUNCT
cet-2331	48	16	mode	mode	NOUN
cet-2331	48	17	esi	esi	PROPN
cet-2331	48	18	fticr	fticr	PROPN
cet-2331	48	19	ms	ms	PROPN
cet-2331	48	20	negative	negative	ADJ
cet-2331	48	21	-	-	PUNCT
cet-2331	48	22	mode	mode	NOUN
cet-2331	48	23	esi	esi	PROPN
cet-2331	48	24	ft	ft	PROPN
cet-2331	48	25	-	-	PUNCT
cet-2331	48	26	icr	icr	PROPN
cet-2331	48	27	offers	offer	VERB
cet-2331	48	28	a	a	DET
cet-2331	48	29	selectively	selectively	ADJ
cet-2331	48	30	ionization	ionization	NOUN
cet-2331	48	31	of	of	ADP
cet-2331	48	32	acid	acid	NOUN
cet-2331	48	33	compounds	compound	NOUN
cet-2331	48	34	and	and	CCONJ
cet-2331	48	35	non	non	ADJ
cet-2331	48	36	-	-	ADJ
cet-2331	48	37	basic	basic	ADJ
cet-2331	48	38	nitrogen	nitrogen	NOUN
cet-2331	48	39	compounds	compound	NOUN
cet-2331	48	40	.	.	PUNCT
cet-2331	49	1	although	although	SCONJ
cet-2331	49	2	the	the	DET
cet-2331	49	3	n1	n1	ADJ
cet-2331	49	4	class	class	NOUN
cet-2331	49	5	species	specie	NOUN
cet-2331	49	6	are	be	AUX
cet-2331	49	7	the	the	DET
cet-2331	49	8	predominant	predominant	ADJ
cet-2331	49	9	compounds	compound	NOUN
cet-2331	49	10	like	like	ADP
cet-2331	49	11	that	that	PRON
cet-2331	49	12	observed	observe	VERB
cet-2331	49	13	for	for	ADP
cet-2331	49	14	positivemode	positivemode	NOUN
cet-2331	49	15	esi	esi	PROPN
cet-2331	49	16	,	,	PUNCT
cet-2331	49	17	in	in	ADP
cet-2331	49	18	this	this	DET
cet-2331	49	19	case	case	NOUN
cet-2331	49	20	,	,	PUNCT
cet-2331	49	21	they	they	PRON
cet-2331	49	22	presumably	presumably	ADV
cet-2331	49	23	contain	contain	VERB
cet-2331	49	24	pyrrole	pyrrole	NOUN
cet-2331	49	25	-	-	PUNCT
cet-2331	49	26	like	like	ADJ
cet-2331	49	27	structures	structure	NOUN
cet-2331	49	28	,	,	PUNCT
cet-2331	49	29	which	which	PRON
cet-2331	49	30	would	would	AUX
cet-2331	49	31	also	also	ADV
cet-2331	49	32	be	be	AUX
cet-2331	49	33	present	present	ADJ
cet-2331	49	34	in	in	ADP
cet-2331	49	35	the	the	DET
cet-2331	49	36	other	other	ADJ
cet-2331	49	37	classes	class	NOUN
cet-2331	49	38	with	with	ADP
cet-2331	49	39	one	one	NUM
cet-2331	49	40	nitrogen	nitrogen	NOUN
cet-2331	49	41	atom	atom	NOUN
cet-2331	49	42	.	.	PUNCT
cet-2331	50	1	the	the	DET
cet-2331	50	2	o2	o2	PROPN
cet-2331	50	3	class	class	NOUN
cet-2331	50	4	showed	show	VERB
cet-2331	50	5	a	a	DET
cet-2331	50	6	noticeable	noticeable	ADJ
cet-2331	50	7	abundance	abundance	NOUN
cet-2331	50	8	in	in	ADP
cet-2331	50	9	all	all	DET
cet-2331	50	10	samples	sample	NOUN
cet-2331	50	11	,	,	PUNCT
cet-2331	50	12	suggesting	suggest	VERB
cet-2331	50	13	that	that	SCONJ
cet-2331	50	14	the	the	DET
cet-2331	50	15	molecular	molecular	ADJ
cet-2331	50	16	structure	structure	NOUN
cet-2331	50	17	of	of	ADP
cet-2331	50	18	these	these	DET
cet-2331	50	19	compounds	compound	NOUN
cet-2331	50	20	contain	contain	VERB
cet-2331	50	21	carboxylic	carboxylic	ADJ
cet-2331	50	22	acid	acid	NOUN
cet-2331	50	23	groups	group	NOUN
cet-2331	50	24	.	.	PUNCT
cet-2331	51	1	oxygen	oxygen	NOUN
cet-2331	51	2	-	-	PUNCT
cet-2331	51	3	only	only	ADV
cet-2331	51	4	compounds	compound	NOUN
cet-2331	51	5	are	be	AUX
cet-2331	51	6	highly	highly	ADV
cet-2331	51	7	predominant	predominant	ADJ
cet-2331	51	8	in	in	ADP
cet-2331	51	9	the	the	DET
cet-2331	51	10	end	end	NOUN
cet-2331	51	11	-	-	PUNCT
cet-2331	51	12	cut	cut	VERB
cet-2331	51	13	(	(	PUNCT
cet-2331	51	14	s5	s5	PROPN
cet-2331	51	15	)	)	PUNCT
cet-2331	51	16	,	,	PUNCT
cet-2331	51	17	namely	namely	ADV
cet-2331	51	18	,	,	PUNCT
cet-2331	51	19	s5	s5	PROPN
cet-2331	51	20	subfraction	subfraction	NOUN
cet-2331	51	21	concentrate	concentrate	VERB
cet-2331	51	22	most	most	ADJ
cet-2331	51	23	of	of	ADP
cet-2331	51	24	the	the	DET
cet-2331	51	25	carboxylic	carboxylic	ADJ
cet-2331	51	26	acid	acid	NOUN
cet-2331	51	27	species	specie	NOUN
cet-2331	51	28	present	present	ADJ
cet-2331	51	29	in	in	ADP
cet-2331	51	30	the	the	DET
cet-2331	51	31	vacuum	vacuum	NOUN
cet-2331	51	32	residue	residue	NOUN
cet-2331	51	33	.	.	PUNCT
cet-2331	52	1	note	note	VERB
cet-2331	52	2	that	that	SCONJ
cet-2331	52	3	o1	o1	NOUN
cet-2331	52	4	class	class	NOUN
cet-2331	52	5	is	be	AUX
cet-2331	52	6	detected	detect	VERB
cet-2331	52	7	,	,	PUNCT
cet-2331	52	8	corresponding	correspond	VERB
cet-2331	52	9	to	to	ADP
cet-2331	52	10	phenolic	phenolic	ADJ
cet-2331	52	11	analogue	analogue	NOUN
cet-2331	52	12	species	specie	NOUN
cet-2331	52	13	.	.	PUNCT
cet-2331	53	1	figure	figure	NOUN
cet-2331	53	2	2	2	NUM
cet-2331	53	3	:	:	PUNCT
cet-2331	53	4	heteroatom	heteroatom	NOUN
cet-2331	53	5	class	class	NOUN
cet-2331	53	6	distribution	distribution	NOUN
cet-2331	53	7	for	for	ADP
cet-2331	53	8	vacuum	vacuum	NOUN
cet-2331	53	9	residue	residue	NOUN
cet-2331	53	10	and	and	CCONJ
cet-2331	53	11	its	its	PRON
cet-2331	53	12	subfractions	subfraction	NOUN
cet-2331	53	13	from	from	ADP
cet-2331	53	14	negative	negative	ADJ
cet-2331	53	15	-	-	PUNCT
cet-2331	53	16	mode	mode	NOUN
cet-2331	53	17	esi	esi	PROPN
cet-2331	53	18	fticr	fticr	PROPN
cet-2331	53	19	ms	ms	PROPN
cet-2331	53	20	double	double	ADJ
cet-2331	53	21	bond	bond	NOUN
cet-2331	53	22	equivalent	equivalent	ADJ
cet-2331	53	23	(	(	PUNCT
cet-2331	53	24	dbe	dbe	NOUN
cet-2331	53	25	)	)	PUNCT
cet-2331	53	26	distribution	distribution	NOUN
cet-2331	53	27	for	for	ADP
cet-2331	53	28	classes	class	NOUN
cet-2331	53	29	can	can	AUX
cet-2331	53	30	provide	provide	VERB
cet-2331	53	31	further	far	ADV
cet-2331	53	32	detailed	detail	VERB
cet-2331	53	33	molecular	molecular	ADJ
cet-2331	53	34	information	information	NOUN
cet-2331	53	35	,	,	PUNCT
cet-2331	53	36	providing	provide	VERB
cet-2331	53	37	evidence	evidence	NOUN
cet-2331	53	38	about	about	ADP
cet-2331	53	39	aromatic	aromatic	ADJ
cet-2331	53	40	and/or	and/or	CCONJ
cet-2331	53	41	naphthenic	naphthenic	ADJ
cet-2331	53	42	rings	ring	NOUN
cet-2331	53	43	attached	attach	VERB
cet-2331	53	44	to	to	ADP
cet-2331	53	45	alkyl	alkyl	ADJ
cet-2331	53	46	chains	chain	NOUN
cet-2331	53	47	.	.	PUNCT
cet-2331	54	1	figure	figure	NOUN
cet-2331	54	2	3	3	NUM
cet-2331	54	3	and	and	CCONJ
cet-2331	54	4	figure	figure	VERB
cet-2331	54	5	4	4	NUM
cet-2331	54	6	display	display	NOUN
cet-2331	54	7	the	the	DET
cet-2331	54	8	dbe	dbe	PROPN
cet-2331	54	9	distributions	distribution	NOUN
cet-2331	54	10	obtained	obtain	VERB
cet-2331	54	11	for	for	ADP
cet-2331	54	12	the	the	DET
cet-2331	54	13	vr	vr	NOUN
cet-2331	54	14	and	and	CCONJ
cet-2331	54	15	its	its	PRON
cet-2331	54	16	fractions	fraction	NOUN
cet-2331	54	17	for	for	ADP
cet-2331	54	18	n1	n1	ADJ
cet-2331	54	19	class	class	NOUN
cet-2331	54	20	from	from	ADP
cet-2331	54	21	(	(	PUNCT
cet-2331	54	22	+	+	NOUN
cet-2331	54	23	)	)	PUNCT
cet-2331	54	24	esi	esi	PROPN
cet-2331	54	25	and	and	CCONJ
cet-2331	54	26	(	(	PUNCT
cet-2331	54	27	-	-	SYM
cet-2331	54	28	)	)	PUNCT
cet-2331	54	29	esi	esi	NOUN
cet-2331	54	30	respectively	respectively	ADV
cet-2331	54	31	.	.	PUNCT
cet-2331	55	1	it	it	PRON
cet-2331	55	2	is	be	AUX
cet-2331	55	3	possible	possible	ADJ
cet-2331	55	4	to	to	PART
cet-2331	55	5	note	note	VERB
cet-2331	55	6	that	that	PRON
cet-2331	55	7	basic	basic	ADJ
cet-2331	55	8	and	and	CCONJ
cet-2331	55	9	non	non	ADJ
cet-2331	55	10	-	-	ADJ
cet-2331	55	11	basic	basic	ADJ
cet-2331	55	12	nitrogen	nitrogen	NOUN
cet-2331	55	13	compounds	compound	NOUN
cet-2331	55	14	contain	contain	VERB
cet-2331	55	15	more	more	ADJ
cet-2331	55	16	aromatic	aromatic	ADJ
cet-2331	55	17	cores	core	NOUN
cet-2331	55	18	as	as	ADP
cet-2331	55	19	the	the	DET
cet-2331	55	20	subfraction	subfraction	NOUN
cet-2331	55	21	became	become	VERB
cet-2331	55	22	heavier	heavy	ADJ
cet-2331	55	23	.	.	PUNCT
cet-2331	56	1	however	however	ADV
cet-2331	56	2	,	,	PUNCT
cet-2331	56	3	pyrrole	pyrrole	ADJ
cet-2331	56	4	derivatives	derivative	NOUN
cet-2331	56	5	(	(	PUNCT
cet-2331	56	6	non	non	ADJ
cet-2331	56	7	-	-	ADJ
cet-2331	56	8	basic	basic	ADJ
cet-2331	56	9	)	)	PUNCT
cet-2331	56	10	distribute	distribute	VERB
cet-2331	56	11	a	a	DET
cet-2331	56	12	narrower	narrow	ADJ
cet-2331	56	13	range	range	NOUN
cet-2331	56	14	of	of	ADP
cet-2331	56	15	dbe	dbe	PROPN
cet-2331	56	16	values	value	NOUN
cet-2331	56	17	than	than	ADP
cet-2331	56	18	pyridine	pyridine	ADJ
cet-2331	56	19	structures	structure	NOUN
cet-2331	56	20	(	(	PUNCT
cet-2331	56	21	basic	basic	ADJ
cet-2331	56	22	)	)	PUNCT
cet-2331	56	23	.	.	PUNCT
cet-2331	57	1	the	the	DET
cet-2331	57	2	simplest	simple	ADJ
cet-2331	57	3	species	specie	NOUN
cet-2331	57	4	detected	detect	VERB
cet-2331	57	5	can	can	AUX
cet-2331	57	6	be	be	AUX
cet-2331	57	7	tetrahydroquinolines	tetrahydroquinoline	NOUN
cet-2331	57	8	(	(	PUNCT
cet-2331	57	9	dbe=	dbe=	PROPN
cet-2331	57	10	5	5	NUM
cet-2331	57	11	)	)	PUNCT
cet-2331	57	12	for	for	ADP
cet-2331	57	13	basic	basic	ADJ
cet-2331	57	14	compounds	compound	NOUN
cet-2331	57	15	and	and	CCONJ
cet-2331	57	16	tetrahydrocarbazole	tetrahydrocarbazole	NOUN
cet-2331	57	17	(	(	PUNCT
cet-2331	57	18	dbe=	dbe=	PROPN
cet-2331	57	19	7	7	NUM
cet-2331	57	20	)	)	PUNCT
cet-2331	57	21	structure	structure	NOUN
cet-2331	57	22	for	for	ADP
cet-2331	57	23	non	non	ADJ
cet-2331	57	24	-	-	ADJ
cet-2331	57	25	basic	basic	ADJ
cet-2331	57	26	compounds	compound	NOUN
cet-2331	57	27	.	.	PUNCT
cet-2331	58	1	it	it	PRON
cet-2331	58	2	is	be	AUX
cet-2331	58	3	known	know	VERB
cet-2331	58	4	that	that	SCONJ
cet-2331	58	5	the	the	DET
cet-2331	58	6	type	type	NOUN
cet-2331	58	7	of	of	ADP
cet-2331	58	8	nitrogen	nitrogen	NOUN
cet-2331	58	9	compounds	compound	NOUN
cet-2331	58	10	contained	contain	VERB
cet-2331	58	11	in	in	ADP
cet-2331	58	12	petroleum	petroleum	NOUN
cet-2331	58	13	samples	sample	NOUN
cet-2331	58	14	is	be	AUX
cet-2331	58	15	important	important	ADJ
cet-2331	58	16	due	due	ADP
cet-2331	58	17	to	to	ADP
cet-2331	58	18	the	the	DET
cet-2331	58	19	participation	participation	NOUN
cet-2331	58	20	of	of	ADP
cet-2331	58	21	these	these	DET
cet-2331	58	22	species	specie	NOUN
cet-2331	58	23	in	in	ADP
cet-2331	58	24	deactivation	deactivation	NOUN
cet-2331	58	25	of	of	ADP
cet-2331	58	26	catalysts	catalyst	NOUN
cet-2331	58	27	used	use	VERB
cet-2331	58	28	in	in	ADP
cet-2331	58	29	hydrotreatment	hydrotreatment	NOUN
cet-2331	58	30	processes	process	NOUN
cet-2331	58	31	(	(	PUNCT
cet-2331	58	32	furimsky	furimsky	NOUN
cet-2331	58	33	et	et	PROPN
cet-2331	58	34	al	al	PROPN
cet-2331	58	35	.	.	PROPN
cet-2331	58	36	,	,	PUNCT
cet-2331	58	37	1999	1999	NUM
cet-2331	58	38	)	)	PUNCT
cet-2331	58	39	.	.	PUNCT
cet-2331	59	1	it	it	PRON
cet-2331	59	2	has	have	AUX
cet-2331	59	3	been	be	AUX
cet-2331	59	4	established	establish	VERB
cet-2331	59	5	that	that	SCONJ
cet-2331	59	6	the	the	DET
cet-2331	59	7	nitrogen	nitrogen	NOUN
cet-2331	59	8	removal	removal	NOUN
cet-2331	59	9	pathway	pathway	NOUN
cet-2331	59	10	involves	involve	VERB
cet-2331	59	11	saturation	saturation	NOUN
cet-2331	59	12	of	of	ADP
cet-2331	59	13	nitrogen	nitrogen	NOUN
cet-2331	59	14	aromatic	aromatic	ADJ
cet-2331	59	15	rings	ring	NOUN
cet-2331	59	16	prior	prior	ADV
cet-2331	59	17	to	to	ADP
cet-2331	59	18	breakdown	breakdown	NOUN
cet-2331	59	19	of	of	ADP
cet-2331	59	20	carbon	carbon	NOUN
cet-2331	59	21	-	-	PUNCT
cet-2331	59	22	nitrogen	nitrogen	NOUN
cet-2331	59	23	bond	bond	NOUN
cet-2331	59	24	(	(	PUNCT
cet-2331	59	25	klein	klein	PROPN
cet-2331	59	26	et	et	PROPN
cet-2331	59	27	al	al	PROPN
cet-2331	59	28	.	.	PROPN
cet-2331	59	29	,	,	PUNCT
cet-2331	59	30	2006b	2006b	NUM
cet-2331	59	31	)	)	PUNCT
cet-2331	59	32	.	.	PUNCT
cet-2331	60	1	this	this	PRON
cet-2331	60	2	could	could	AUX
cet-2331	60	3	indicate	indicate	VERB
cet-2331	60	4	a	a	DET
cet-2331	60	5	highly	highly	ADV
cet-2331	60	6	resistance	resistance	NOUN
cet-2331	60	7	to	to	ADP
cet-2331	60	8	denitrogenation	denitrogenation	NOUN
cet-2331	60	9	for	for	ADP
cet-2331	60	10	the	the	DET
cet-2331	60	11	end	end	NOUN
cet-2331	60	12	-	-	PUNCT
cet-2331	60	13	cut	cut	VERB
cet-2331	60	14	(	(	PUNCT
cet-2331	60	15	s5	s5	PROPN
cet-2331	60	16	)	)	PUNCT
cet-2331	60	17	due	due	ADP
cet-2331	60	18	to	to	PART
cet-2331	60	19	contain	contain	VERB
cet-2331	60	20	structures	structure	NOUN
cet-2331	60	21	with	with	ADP
cet-2331	60	22	several	several	ADJ
cet-2331	60	23	aromatic	aromatic	ADJ
cet-2331	60	24	rings	ring	NOUN
cet-2331	60	25	.	.	PUNCT
cet-2331	61	1	1605	1605	NUM
cet-2331	61	2	figure	figure	VERB
cet-2331	61	3	3	3	NUM
cet-2331	61	4	:	:	PUNCT
cet-2331	61	5	dbe	dbe	NOUN
cet-2331	61	6	distribution	distribution	NOUN
cet-2331	61	7	for	for	ADP
cet-2331	61	8	n1	n1	ADJ
cet-2331	61	9	class	class	NOUN
cet-2331	61	10	from	from	ADP
cet-2331	61	11	figure	figure	NOUN
cet-2331	61	12	4	4	NUM
cet-2331	61	13	:	:	PUNCT
cet-2331	61	14	dbe	dbe	NOUN
cet-2331	61	15	distribution	distribution	NOUN
cet-2331	61	16	for	for	ADP
cet-2331	61	17	n1	n1	ADJ
cet-2331	61	18	class	class	NOUN
cet-2331	61	19	from	from	ADP
cet-2331	61	20	positive	positive	ADJ
cet-2331	61	21	-	-	PUNCT
cet-2331	61	22	mode	mode	NOUN
cet-2331	61	23	esi	esi	PROPN
cet-2331	61	24	ft	ft	PROPN
cet-2331	61	25	icr	icr	PROPN
cet-2331	61	26	ms	ms	PROPN
cet-2331	61	27	negative	negative	ADJ
cet-2331	61	28	-	-	PUNCT
cet-2331	61	29	mode	mode	NOUN
cet-2331	61	30	esi	esi	PROPN
cet-2331	61	31	ft	ft	PROPN
cet-2331	61	32	-	-	PUNCT
cet-2331	61	33	icr	icr	PROPN
cet-2331	61	34	ms	ms	PROPN
cet-2331	61	35	dbe	dbe	PROPN
cet-2331	61	36	distributions	distribution	NOUN
cet-2331	61	37	for	for	ADP
cet-2331	61	38	other	other	ADJ
cet-2331	61	39	classes	class	NOUN
cet-2331	61	40	with	with	ADP
cet-2331	61	41	nitrogen	nitrogen	NOUN
cet-2331	61	42	atoms	atom	NOUN
cet-2331	61	43	derived	derive	VERB
cet-2331	61	44	from	from	ADP
cet-2331	61	45	(	(	PUNCT
cet-2331	61	46	+	+	NOUN
cet-2331	61	47	)	)	PUNCT
cet-2331	61	48	esi	esi	PROPN
cet-2331	61	49	and	and	CCONJ
cet-2331	61	50	(	(	PUNCT
cet-2331	61	51	-	-	PUNCT
cet-2331	61	52	)	)	PUNCT
cet-2331	61	53	esi	esi	NOUN
cet-2331	61	54	,	,	PUNCT
cet-2331	61	55	present	present	ADJ
cet-2331	61	56	trends	trend	NOUN
cet-2331	61	57	similar	similar	ADJ
cet-2331	61	58	to	to	ADP
cet-2331	61	59	those	those	PRON
cet-2331	61	60	exhibited	exhibit	VERB
cet-2331	61	61	by	by	ADP
cet-2331	61	62	n1	n1	PROPN
cet-2331	61	63	classes	class	NOUN
cet-2331	61	64	,	,	PUNCT
cet-2331	61	65	where	where	SCONJ
cet-2331	61	66	pyridine	pyridine	NOUN
cet-2331	61	67	-	-	PUNCT
cet-2331	61	68	like	like	ADJ
cet-2331	61	69	compounds	compound	NOUN
cet-2331	61	70	are	be	AUX
cet-2331	61	71	in	in	ADP
cet-2331	61	72	a	a	DET
cet-2331	61	73	wider	wide	ADJ
cet-2331	61	74	range	range	NOUN
cet-2331	61	75	of	of	ADP
cet-2331	61	76	dbe	dbe	PROPN
cet-2331	61	77	than	than	ADP
cet-2331	61	78	those	those	PRON
cet-2331	61	79	obtained	obtain	VERB
cet-2331	61	80	for	for	ADP
cet-2331	61	81	pyrrole	pyrrole	ADJ
cet-2331	61	82	species	specie	NOUN
cet-2331	61	83	.	.	PUNCT
cet-2331	62	1	table	table	NOUN
cet-2331	62	2	2	2	NUM
cet-2331	62	3	shows	show	VERB
cet-2331	62	4	the	the	DET
cet-2331	62	5	distribution	distribution	NOUN
cet-2331	62	6	range	range	NOUN
cet-2331	62	7	for	for	ADP
cet-2331	62	8	n1o1	n1o1	PROPN
cet-2331	62	9	,	,	PUNCT
cet-2331	62	10	n1s1	n1s1	X
cet-2331	62	11	and	and	CCONJ
cet-2331	62	12	n2	n2	ADJ
cet-2331	62	13	classes	class	NOUN
cet-2331	62	14	for	for	ADP
cet-2331	62	15	the	the	DET
cet-2331	62	16	vacuum	vacuum	NOUN
cet-2331	62	17	residue	residue	NOUN
cet-2331	62	18	,	,	PUNCT
cet-2331	62	19	taking	take	VERB
cet-2331	62	20	into	into	ADP
cet-2331	62	21	account	account	NOUN
cet-2331	62	22	contribution	contribution	NOUN
cet-2331	62	23	of	of	ADP
cet-2331	62	24	its	its	PRON
cet-2331	62	25	subfractions	subfraction	NOUN
cet-2331	62	26	.	.	PUNCT
cet-2331	63	1	table	table	NOUN
cet-2331	63	2	2	2	NUM
cet-2331	63	3	:	:	PUNCT
cet-2331	63	4	range	range	NOUN
cet-2331	63	5	of	of	ADP
cet-2331	63	6	dbe	dbe	PROPN
cet-2331	63	7	for	for	ADP
cet-2331	63	8	some	some	DET
cet-2331	63	9	nitrogen	nitrogen	NOUN
cet-2331	63	10	-	-	PUNCT
cet-2331	63	11	containing	contain	VERB
cet-2331	63	12	classes	class	NOUN
cet-2331	63	13	for	for	ADP
cet-2331	63	14	the	the	DET
cet-2331	63	15	vacuum	vacuum	NOUN
cet-2331	63	16	residue	residue	NOUN
cet-2331	63	17	.	.	PUNCT
cet-2331	64	1	(	(	PUNCT
cet-2331	64	2	+	+	NOUN
cet-2331	64	3	)	)	PUNCT
cet-2331	64	4	esi	esi	PROPN
cet-2331	64	5	(	(	PUNCT
cet-2331	64	6	-	-	SYM
cet-2331	64	7	)	)	PUNCT
cet-2331	64	8	esi	esi	NOUN
cet-2331	64	9	n1o1	n1o1	ADP
cet-2331	64	10	4	4	NUM
cet-2331	64	11	38	38	NUM
cet-2331	64	12	8	8	NUM
cet-2331	64	13	30	30	NUM
cet-2331	64	14	n1s1	n1s1	SYM
cet-2331	64	15	6	6	NUM
cet-2331	64	16	38	38	NUM
cet-2331	64	17	9	9	NUM
cet-2331	64	18	33	33	NUM
cet-2331	64	19	n2	n2	NOUN
cet-2331	64	20	8	8	NUM
cet-2331	64	21	40	40	NUM
cet-2331	64	22	10	10	NUM
cet-2331	64	23	32	32	NUM
cet-2331	64	24	among	among	ADP
cet-2331	64	25	the	the	DET
cet-2331	64	26	compounds	compound	NOUN
cet-2331	64	27	of	of	ADP
cet-2331	64	28	interest	interest	NOUN
cet-2331	64	29	in	in	ADP
cet-2331	64	30	characterization	characterization	NOUN
cet-2331	64	31	of	of	ADP
cet-2331	64	32	vacuum	vacuum	PROPN
cet-2331	64	33	residua	residua	PROPN
cet-2331	64	34	are	be	AUX
cet-2331	64	35	carboxylic	carboxylic	ADJ
cet-2331	64	36	acids	acid	NOUN
cet-2331	64	37	,	,	PUNCT
cet-2331	64	38	which	which	PRON
cet-2331	64	39	are	be	AUX
cet-2331	64	40	related	relate	VERB
cet-2331	64	41	to	to	ADP
cet-2331	64	42	corrosion	corrosion	NOUN
cet-2331	64	43	in	in	ADP
cet-2331	64	44	refining	refining	NOUN
cet-2331	64	45	units	unit	NOUN
cet-2331	64	46	,	,	PUNCT
cet-2331	64	47	increasing	increase	VERB
cet-2331	64	48	costs	cost	NOUN
cet-2331	64	49	to	to	PART
cet-2331	64	50	process	process	VERB
cet-2331	64	51	acid	acid	NOUN
cet-2331	64	52	petroleum	petroleum	NOUN
cet-2331	64	53	(	(	PUNCT
cet-2331	64	54	barrow	barrow	NOUN
cet-2331	64	55	et	et	PROPN
cet-2331	64	56	al	al	PROPN
cet-2331	64	57	.	.	PROPN
cet-2331	64	58	,	,	PUNCT
cet-2331	64	59	2004	2004	NUM
cet-2331	64	60	)	)	PUNCT
cet-2331	64	61	.	.	PUNCT
cet-2331	65	1	these	these	DET
cet-2331	65	2	oxygen	oxygen	NOUN
cet-2331	65	3	compounds	compound	NOUN
cet-2331	65	4	can	can	AUX
cet-2331	65	5	be	be	AUX
cet-2331	65	6	selectively	selectively	ADV
cet-2331	65	7	ionized	ionize	VERB
cet-2331	65	8	by	by	ADP
cet-2331	65	9	negative	negative	ADJ
cet-2331	65	10	-	-	PUNCT
cet-2331	65	11	mode	mode	NOUN
cet-2331	65	12	esi	esi	NOUN
cet-2331	65	13	,	,	PUNCT
cet-2331	65	14	being	be	AUX
cet-2331	65	15	grouped	group	VERB
cet-2331	65	16	into	into	ADP
cet-2331	65	17	o2	o2	ADJ
cet-2331	65	18	class	class	NOUN
cet-2331	65	19	.	.	PUNCT
cet-2331	66	1	in	in	ADP
cet-2331	66	2	the	the	DET
cet-2331	66	3	vacuum	vacuum	NOUN
cet-2331	66	4	residue	residue	NOUN
cet-2331	66	5	the	the	DET
cet-2331	66	6	o2	o2	PROPN
cet-2331	66	7	and	and	CCONJ
cet-2331	66	8	n1o2	n1o2	NOUN
cet-2331	66	9	classes	class	NOUN
cet-2331	66	10	were	be	AUX
cet-2331	66	11	detected	detect	VERB
cet-2331	66	12	with	with	ADP
cet-2331	66	13	considerable	considerable	ADJ
cet-2331	66	14	abundance	abundance	NOUN
cet-2331	66	15	.	.	PUNCT
cet-2331	67	1	the	the	DET
cet-2331	67	2	dbe	dbe	PROPN
cet-2331	67	3	distribution	distribution	NOUN
cet-2331	67	4	obtained	obtain	VERB
cet-2331	67	5	for	for	ADP
cet-2331	67	6	these	these	DET
cet-2331	67	7	classes	class	NOUN
cet-2331	67	8	is	be	AUX
cet-2331	67	9	shown	show	VERB
cet-2331	67	10	in	in	ADP
cet-2331	67	11	figure	figure	NOUN
cet-2331	67	12	5	5	NUM
cet-2331	67	13	and	and	CCONJ
cet-2331	67	14	figure	figure	VERB
cet-2331	67	15	6	6	NUM
cet-2331	67	16	.	.	PUNCT
cet-2331	68	1	figure	figure	NOUN
cet-2331	68	2	5	5	NUM
cet-2331	68	3	:	:	PUNCT
cet-2331	68	4	dbe	dbe	NOUN
cet-2331	68	5	distribution	distribution	NOUN
cet-2331	68	6	for	for	ADP
cet-2331	68	7	o2	o2	ADJ
cet-2331	68	8	class	class	NOUN
cet-2331	68	9	from	from	ADP
cet-2331	68	10	figure	figure	NOUN
cet-2331	68	11	6	6	NUM
cet-2331	68	12	:	:	PUNCT
cet-2331	68	13	dbe	dbe	NOUN
cet-2331	68	14	distribution	distribution	NOUN
cet-2331	68	15	for	for	ADP
cet-2331	68	16	n1o2	n1o2	X
cet-2331	68	17	class	class	NOUN
cet-2331	68	18	from	from	ADP
cet-2331	68	19	negative	negative	ADJ
cet-2331	68	20	-	-	PUNCT
cet-2331	68	21	mode	mode	NOUN
cet-2331	68	22	esi	esi	PROPN
cet-2331	68	23	ft	ft	PROPN
cet-2331	68	24	icr	icr	PROPN
cet-2331	68	25	ms	ms	PROPN
cet-2331	68	26	negative	negative	ADJ
cet-2331	68	27	-	-	PUNCT
cet-2331	68	28	mode	mode	NOUN
cet-2331	68	29	esi	esi	PROPN
cet-2331	68	30	ft	ft	PROPN
cet-2331	68	31	-	-	PUNCT
cet-2331	68	32	icr	icr	PROPN
cet-2331	68	33	ms	ms	NOUN
cet-2331	68	34	if	if	SCONJ
cet-2331	68	35	the	the	DET
cet-2331	68	36	class	class	NOUN
cet-2331	68	37	o2	o2	PROPN
cet-2331	68	38	is	be	AUX
cet-2331	68	39	associated	associate	VERB
cet-2331	68	40	with	with	ADP
cet-2331	68	41	carboxylic	carboxylic	ADJ
cet-2331	68	42	acids	acid	NOUN
cet-2331	68	43	,	,	PUNCT
cet-2331	68	44	the	the	DET
cet-2331	68	45	compounds	compound	NOUN
cet-2331	68	46	detected	detect	VERB
cet-2331	68	47	at	at	ADP
cet-2331	68	48	dbe	dbe	PROPN
cet-2331	68	49	less	less	ADJ
cet-2331	68	50	than	than	ADP
cet-2331	68	51	4	4	NUM
cet-2331	68	52	would	would	AUX
cet-2331	68	53	correspond	correspond	VERB
cet-2331	68	54	exclusively	exclusively	ADV
cet-2331	68	55	to	to	ADP
cet-2331	68	56	naphthenic	naphthenic	ADJ
cet-2331	68	57	acids	acid	NOUN
cet-2331	68	58	derived	derive	VERB
cet-2331	68	59	from	from	ADP
cet-2331	68	60	cyclohexanoic	cyclohexanoic	ADJ
cet-2331	68	61	and	and	CCONJ
cet-2331	68	62	cyclopentanoic	cyclopentanoic	ADJ
cet-2331	68	63	acids	acid	NOUN
cet-2331	68	64	.	.	PUNCT
cet-2331	69	1	from	from	ADP
cet-2331	69	2	dbe	dbe	PROPN
cet-2331	69	3	4	4	NUM
cet-2331	69	4	to	to	PART
cet-2331	69	5	24	24	NUM
cet-2331	69	6	it	it	PRON
cet-2331	69	7	is	be	AUX
cet-2331	69	8	possible	possible	ADJ
cet-2331	69	9	contain	contain	VERB
cet-2331	69	10	aromatic	aromatic	ADJ
cet-2331	69	11	carboxylic	carboxylic	ADJ
cet-2331	69	12	acids	acid	NOUN
cet-2331	69	13	,	,	PUNCT
cet-2331	69	14	involving	involve	VERB
cet-2331	69	15	complex	complex	ADJ
cet-2331	69	16	structures	structure	NOUN
cet-2331	69	17	with	with	ADP
cet-2331	69	18	several	several	ADJ
cet-2331	69	19	aromatic	aromatic	ADJ
cet-2331	69	20	rings	ring	NOUN
cet-2331	69	21	.	.	PUNCT
cet-2331	70	1	for	for	ADP
cet-2331	70	2	the	the	DET
cet-2331	70	3	case	case	NOUN
cet-2331	70	4	of	of	ADP
cet-2331	70	5	n1o2	n1o2	PROPN
cet-2331	70	6	class	class	NOUN
cet-2331	70	7	,	,	PUNCT
cet-2331	70	8	although	although	SCONJ
cet-2331	70	9	there	there	PRON
cet-2331	70	10	is	be	VERB
cet-2331	70	11	absence	absence	NOUN
cet-2331	70	12	of	of	ADP
cet-2331	70	13	compounds	compound	NOUN
cet-2331	70	14	constituted	constitute	VERB
cet-2331	70	15	only	only	ADV
cet-2331	70	16	by	by	ADP
cet-2331	70	17	cycloaliphatic	cycloaliphatic	ADJ
cet-2331	70	18	acids	acid	NOUN
cet-2331	70	19	,	,	PUNCT
cet-2331	70	20	these	these	DET
cet-2331	70	21	species	specie	NOUN
cet-2331	70	22	within	within	ADP
cet-2331	70	23	the	the	DET
cet-2331	70	24	range	range	NOUN
cet-2331	70	25	of	of	ADP
cet-2331	70	26	dbe	dbe	PROPN
cet-2331	70	27	7	7	NUM
cet-2331	70	28	–	–	PUNCT
cet-2331	70	29	29	29	NUM
cet-2331	70	30	can	can	AUX
cet-2331	70	31	be	be	AUX
cet-2331	70	32	associated	associate	VERB
cet-2331	70	33	to	to	ADP
cet-2331	70	34	naphthenic	naphthenic	ADJ
cet-2331	70	35	-	-	PUNCT
cet-2331	70	36	aromatic	aromatic	ADJ
cet-2331	70	37	acids	acid	NOUN
cet-2331	70	38	.	.	PUNCT
cet-2331	71	1	note	note	VERB
cet-2331	71	2	1606	1606	NUM
cet-2331	71	3	that	that	SCONJ
cet-2331	71	4	in	in	ADP
cet-2331	71	5	this	this	DET
cet-2331	71	6	case	case	NOUN
cet-2331	71	7	,	,	PUNCT
cet-2331	71	8	the	the	DET
cet-2331	71	9	nitrogen	nitrogen	NOUN
cet-2331	71	10	can	can	AUX
cet-2331	71	11	exist	exist	VERB
cet-2331	71	12	either	either	CCONJ
cet-2331	71	13	as	as	ADP
cet-2331	71	14	pyridine	pyridine	NOUN
cet-2331	71	15	or	or	CCONJ
cet-2331	71	16	pyrrole	pyrrole	NOUN
cet-2331	71	17	form	form	NOUN
cet-2331	71	18	,	,	PUNCT
cet-2331	71	19	for	for	ADP
cet-2331	71	20	example	example	NOUN
cet-2331	71	21	,	,	PUNCT
cet-2331	71	22	dbe	dbe	PROPN
cet-2331	71	23	7	7	NUM
cet-2331	71	24	may	may	AUX
cet-2331	71	25	be	be	AUX
cet-2331	71	26	associated	associate	VERB
cet-2331	71	27	to	to	ADP
cet-2331	71	28	an	an	DET
cet-2331	71	29	indole	indole	ADJ
cet-2331	71	30	carboxylic	carboxylic	ADJ
cet-2331	71	31	acid	acid	NOUN
cet-2331	71	32	.	.	PUNCT
cet-2331	72	1	it	it	PRON
cet-2331	72	2	is	be	AUX
cet-2331	72	3	common	common	ADJ
cet-2331	72	4	to	to	ADP
cet-2331	72	5	related	relate	VERB
cet-2331	72	6	o2	o2	ADJ
cet-2331	72	7	class	class	NOUN
cet-2331	72	8	with	with	ADP
cet-2331	72	9	carboxylic	carboxylic	ADJ
cet-2331	72	10	acids	acid	NOUN
cet-2331	72	11	,	,	PUNCT
cet-2331	72	12	but	but	CCONJ
cet-2331	72	13	the	the	DET
cet-2331	72	14	presence	presence	NOUN
cet-2331	72	15	of	of	ADP
cet-2331	72	16	compounds	compound	NOUN
cet-2331	72	17	that	that	PRON
cet-2331	72	18	contain	contain	VERB
cet-2331	72	19	hydroxyl	hydroxyl	NOUN
cet-2331	72	20	groups	group	NOUN
cet-2331	72	21	(	(	PUNCT
cet-2331	72	22	r	r	X
cet-2331	72	23	-	-	PUNCT
cet-2331	72	24	oh	oh	INTJ
cet-2331	72	25	)	)	PUNCT
cet-2331	72	26	which	which	PRON
cet-2331	72	27	can	can	AUX
cet-2331	72	28	be	be	AUX
cet-2331	72	29	found	find	VERB
cet-2331	72	30	as	as	ADP
cet-2331	72	31	phenols	phenol	NOUN
cet-2331	72	32	or	or	CCONJ
cet-2331	72	33	saturated	saturate	VERB
cet-2331	72	34	alcohols	alcohol	NOUN
cet-2331	72	35	is	be	AUX
cet-2331	72	36	also	also	ADV
cet-2331	72	37	feasible	feasible	ADJ
cet-2331	72	38	(	(	PUNCT
cet-2331	72	39	wang	wang	PROPN
cet-2331	72	40	et	et	PROPN
cet-2331	72	41	al	al	PROPN
cet-2331	72	42	.	.	PROPN
cet-2331	72	43	,	,	PUNCT
cet-2331	72	44	2013	2013	NUM
cet-2331	72	45	)	)	PUNCT
cet-2331	72	46	.	.	PUNCT
cet-2331	73	1	this	this	DET
cet-2331	73	2	fact	fact	NOUN
cet-2331	73	3	makes	make	VERB
cet-2331	73	4	possible	possible	ADJ
cet-2331	73	5	that	that	SCONJ
cet-2331	73	6	diols	diol	NOUN
cet-2331	73	7	such	such	ADJ
cet-2331	73	8	as	as	ADP
cet-2331	73	9	naphthalenediol	naphthalenediol	NOUN
cet-2331	73	10	derivatives	derivative	NOUN
cet-2331	73	11	(	(	PUNCT
cet-2331	73	12	dbe=	dbe=	PROPN
cet-2331	73	13	7	7	NUM
cet-2331	73	14	)	)	PUNCT
cet-2331	73	15	can	can	AUX
cet-2331	73	16	be	be	AUX
cet-2331	73	17	present	present	ADJ
cet-2331	73	18	in	in	ADP
cet-2331	73	19	the	the	DET
cet-2331	73	20	vacuum	vacuum	NOUN
cet-2331	73	21	residue	residue	NOUN
cet-2331	73	22	.	.	PUNCT
cet-2331	74	1	data	datum	NOUN
cet-2331	74	2	obtained	obtain	VERB
cet-2331	74	3	by	by	ADP
cet-2331	74	4	ft	ft	PROPN
cet-2331	74	5	-	-	PUNCT
cet-2331	74	6	icr	icr	PROPN
cet-2331	74	7	may	may	AUX
cet-2331	74	8	be	be	AUX
cet-2331	74	9	related	relate	VERB
cet-2331	74	10	with	with	ADP
cet-2331	74	11	structural	structural	ADJ
cet-2331	74	12	information	information	NOUN
cet-2331	74	13	of	of	ADP
cet-2331	74	14	components	component	NOUN
cet-2331	74	15	in	in	ADP
cet-2331	74	16	crude	crude	ADJ
cet-2331	74	17	oils	oil	NOUN
cet-2331	74	18	.	.	PUNCT
cet-2331	75	1	the	the	DET
cet-2331	75	2	planar	planar	ADJ
cet-2331	75	3	limit	limit	NOUN
cet-2331	75	4	is	be	AUX
cet-2331	75	5	a	a	DET
cet-2331	75	6	recent	recent	ADJ
cet-2331	75	7	concept	concept	NOUN
cet-2331	75	8	proposed	propose	VERB
cet-2331	75	9	to	to	PART
cet-2331	75	10	understand	understand	VERB
cet-2331	75	11	the	the	DET
cet-2331	75	12	molecular	molecular	ADJ
cet-2331	75	13	structure	structure	NOUN
cet-2331	75	14	of	of	ADP
cet-2331	75	15	petroleum	petroleum	NOUN
cet-2331	75	16	compounds	compound	NOUN
cet-2331	75	17	.	.	PUNCT
cet-2331	76	1	the	the	DET
cet-2331	76	2	planar	planar	ADJ
cet-2331	76	3	limit	limit	NOUN
cet-2331	76	4	has	have	AUX
cet-2331	76	5	been	be	AUX
cet-2331	76	6	defined	define	VERB
cet-2331	76	7	as	as	ADP
cet-2331	76	8	the	the	DET
cet-2331	76	9	imaginary	imaginary	ADJ
cet-2331	76	10	line	line	NOUN
cet-2331	76	11	generated	generate	VERB
cet-2331	76	12	by	by	ADP
cet-2331	76	13	connecting	connect	VERB
cet-2331	76	14	the	the	DET
cet-2331	76	15	highest	high	ADJ
cet-2331	76	16	dbe	dbe	NOUN
cet-2331	76	17	values	value	NOUN
cet-2331	76	18	for	for	ADP
cet-2331	76	19	a	a	DET
cet-2331	76	20	given	give	VERB
cet-2331	76	21	carbon	carbon	NOUN
cet-2331	76	22	number	number	NOUN
cet-2331	76	23	in	in	ADP
cet-2331	76	24	a	a	DET
cet-2331	76	25	plot	plot	NOUN
cet-2331	76	26	of	of	ADP
cet-2331	76	27	dbe	dbe	PROPN
cet-2331	76	28	versus	versus	ADP
cet-2331	76	29	carbon	carbon	NOUN
cet-2331	76	30	number	number	NOUN
cet-2331	76	31	obtained	obtain	VERB
cet-2331	76	32	from	from	ADP
cet-2331	76	33	ft	ft	PROPN
cet-2331	76	34	-	-	PUNCT
cet-2331	76	35	icr	icr	NOUN
cet-2331	76	36	data	datum	NOUN
cet-2331	76	37	(	(	PUNCT
cet-2331	76	38	figure	figure	NOUN
cet-2331	76	39	7	7	NUM
cet-2331	76	40	)	)	PUNCT
cet-2331	76	41	,	,	PUNCT
cet-2331	76	42	where	where	SCONJ
cet-2331	76	43	the	the	DET
cet-2331	76	44	corresponding	corresponding	ADJ
cet-2331	76	45	slope	slope	NOUN
cet-2331	76	46	is	be	AUX
cet-2331	76	47	related	relate	VERB
cet-2331	76	48	to	to	ADP
cet-2331	76	49	the	the	DET
cet-2331	76	50	condensation	condensation	NOUN
cet-2331	76	51	degree	degree	NOUN
cet-2331	76	52	of	of	ADP
cet-2331	76	53	species	specie	NOUN
cet-2331	76	54	(	(	PUNCT
cet-2331	76	55	purcell	purcell	PROPN
cet-2331	76	56	et	et	PROPN
cet-2331	76	57	al	al	PROPN
cet-2331	76	58	.	.	PROPN
cet-2331	76	59	,	,	PUNCT
cet-2331	76	60	2010	2010	NUM
cet-2331	76	61	)	)	PUNCT
cet-2331	76	62	.	.	PUNCT
cet-2331	77	1	it	it	PRON
cet-2331	77	2	has	have	AUX
cet-2331	77	3	been	be	AUX
cet-2331	77	4	reported	report	VERB
cet-2331	77	5	how	how	SCONJ
cet-2331	77	6	this	this	DET
cet-2331	77	7	slope	slope	NOUN
cet-2331	77	8	varies	vary	VERB
cet-2331	77	9	from	from	ADP
cet-2331	77	10	a	a	DET
cet-2331	77	11	saturated	saturate	VERB
cet-2331	77	12	to	to	ADP
cet-2331	77	13	an	an	DET
cet-2331	77	14	asphaltenes	asphaltene	NOUN
cet-2331	77	15	fraction	fraction	NOUN
cet-2331	77	16	of	of	ADP
cet-2331	77	17	a	a	DET
cet-2331	77	18	crude	crude	ADJ
cet-2331	77	19	oil	oil	NOUN
cet-2331	77	20	,	,	PUNCT
cet-2331	77	21	found	find	VERB
cet-2331	77	22	slope	slope	NOUN
cet-2331	77	23	values	value	NOUN
cet-2331	77	24	of	of	ADP
cet-2331	77	25	≈	≈	PROPN
cet-2331	77	26	0.3	0.3	NUM
cet-2331	77	27	and	and	CCONJ
cet-2331	77	28	≈	≈	PROPN
cet-2331	77	29	0.9	0.9	NUM
cet-2331	77	30	,	,	PUNCT
cet-2331	77	31	respectively	respectively	ADV
cet-2331	77	32	.	.	PUNCT
cet-2331	78	1	the	the	DET
cet-2331	78	2	slopes	slope	NOUN
cet-2331	78	3	calculated	calculate	VERB
cet-2331	78	4	for	for	ADP
cet-2331	78	5	the	the	DET
cet-2331	78	6	most	most	ADV
cet-2331	78	7	abundant	abundant	ADJ
cet-2331	78	8	classes	class	NOUN
cet-2331	78	9	detected	detect	VERB
cet-2331	78	10	in	in	ADP
cet-2331	78	11	the	the	DET
cet-2331	78	12	vacuum	vacuum	NOUN
cet-2331	78	13	residue	residue	NOUN
cet-2331	78	14	and	and	CCONJ
cet-2331	78	15	its	its	PRON
cet-2331	78	16	fractions	fraction	NOUN
cet-2331	78	17	are	be	AUX
cet-2331	78	18	shown	show	VERB
cet-2331	78	19	in	in	ADP
cet-2331	78	20	table	table	NOUN
cet-2331	78	21	3	3	NUM
cet-2331	78	22	.	.	PUNCT
cet-2331	78	23	figure	figure	VERB
cet-2331	78	24	7	7	NUM
cet-2331	78	25	:	:	PUNCT
cet-2331	78	26	planar	planar	ADJ
cet-2331	78	27	limit	limit	NOUN
cet-2331	78	28	(	(	PUNCT
cet-2331	78	29	red	red	ADJ
cet-2331	78	30	line	line	NOUN
cet-2331	78	31	)	)	PUNCT
cet-2331	78	32	on	on	ADP
cet-2331	78	33	a	a	DET
cet-2331	78	34	plot	plot	NOUN
cet-2331	78	35	of	of	ADP
cet-2331	78	36	dbe	dbe	PROPN
cet-2331	78	37	versus	versus	ADP
cet-2331	78	38	carbon	carbon	NOUN
cet-2331	78	39	number	number	NOUN
cet-2331	78	40	for	for	ADP
cet-2331	78	41	n1	n1	ADJ
cet-2331	78	42	class	class	NOUN
cet-2331	78	43	from	from	ADP
cet-2331	78	44	positive	positive	ADJ
cet-2331	78	45	-	-	PUNCT
cet-2331	78	46	mode	mode	NOUN
cet-2331	78	47	fticr	fticr	NOUN
cet-2331	78	48	ms	ms	NOUN
cet-2331	78	49	table	table	NOUN
cet-2331	78	50	3	3	NUM
cet-2331	78	51	:	:	PUNCT
cet-2331	78	52	slopes	slope	NOUN
cet-2331	78	53	of	of	ADP
cet-2331	78	54	planar	planar	ADJ
cet-2331	78	55	limit	limit	NOUN
cet-2331	78	56	of	of	ADP
cet-2331	78	57	n1	n1	ADJ
cet-2331	78	58	and	and	CCONJ
cet-2331	78	59	o2	o2	PROPN
cet-2331	78	60	classes	class	NOUN
cet-2331	78	61	.	.	PUNCT
cet-2331	79	1	vr	vr	PROPN
cet-2331	79	2	s1	s1	PROPN
cet-2331	79	3	s2	s2	PROPN
cet-2331	79	4	s3	s3	PROPN
cet-2331	79	5	s4	s4	PROPN
cet-2331	79	6	s5	s5	PROPN
cet-2331	79	7	n1	n1	PROPN
cet-2331	79	8	(	(	PUNCT
cet-2331	79	9	+	+	NOUN
cet-2331	79	10	)	)	PUNCT
cet-2331	79	11	esi	esi	NOUN
cet-2331	79	12	0.54	0.54	NUM
cet-2331	79	13	0.45	0.45	NUM
cet-2331	79	14	0.53	0.53	NUM
cet-2331	79	15	0.55	0.55	NUM
cet-2331	79	16	0.60	0.60	NUM
cet-2331	79	17	0.68	0.68	NUM
cet-2331	79	18	n1	n1	NOUN
cet-2331	79	19	(	(	PUNCT
cet-2331	79	20	-	-	SYM
cet-2331	79	21	)	)	PUNCT
cet-2331	79	22	esi	esi	PROPN
cet-2331	79	23	0.65	0.65	NUM
cet-2331	79	24	0.50	0.50	NUM
cet-2331	79	25	0.51	0.51	NUM
cet-2331	79	26	0.53	0.53	NUM
cet-2331	79	27	0.66	0.66	NUM
cet-2331	79	28	0.67	0.67	NUM
cet-2331	79	29	o2	o2	PROPN
cet-2331	79	30	(	(	PUNCT
cet-2331	79	31	-	-	SYM
cet-2331	79	32	)	)	PUNCT
cet-2331	79	33	esi	esi	NOUN
cet-2331	79	34	0.69	0.69	NUM
cet-2331	79	35	0.45	0.45	NUM
cet-2331	79	36	0.57	0.57	NUM
cet-2331	79	37	0.66	0.66	NUM
cet-2331	79	38	0.73	0.73	NUM
cet-2331	79	39	0.74	0.74	NUM
cet-2331	79	40	the	the	DET
cet-2331	79	41	slope	slope	NOUN
cet-2331	79	42	results	result	NOUN
cet-2331	79	43	indicate	indicate	VERB
cet-2331	79	44	the	the	DET
cet-2331	79	45	presence	presence	NOUN
cet-2331	79	46	of	of	ADP
cet-2331	79	47	more	more	ADV
cet-2331	79	48	condensed	condensed	ADJ
cet-2331	79	49	structures	structure	NOUN
cet-2331	79	50	as	as	SCONJ
cet-2331	79	51	the	the	DET
cet-2331	79	52	subfraction	subfraction	NOUN
cet-2331	79	53	become	become	VERB
cet-2331	79	54	heavier	heavy	ADJ
cet-2331	79	55	.	.	PUNCT
cet-2331	80	1	therefore	therefore	ADV
cet-2331	80	2	,	,	PUNCT
cet-2331	80	3	each	each	DET
cet-2331	80	4	subfraction	subfraction	NOUN
cet-2331	80	5	contains	contain	VERB
cet-2331	80	6	compounds	compound	NOUN
cet-2331	80	7	with	with	ADP
cet-2331	80	8	different	different	ADJ
cet-2331	80	9	condensation	condensation	NOUN
cet-2331	80	10	degree	degree	NOUN
cet-2331	80	11	.	.	PUNCT
cet-2331	81	1	the	the	DET
cet-2331	81	2	condensation	condensation	NOUN
cet-2331	81	3	degree	degree	NOUN
cet-2331	81	4	increases	increase	NOUN
cet-2331	81	5	as	as	ADP
cet-2331	81	6	s1	s1	PROPN
cet-2331	81	7	<	<	X
cet-2331	81	8	s2	s2	PROPN
cet-2331	81	9	<	<	X
cet-2331	81	10	s3	s3	PROPN
cet-2331	81	11	<	<	X
cet-2331	81	12	s4	s4	PROPN
cet-2331	81	13	<	<	X
cet-2331	81	14	s5	s5	PROPN
cet-2331	81	15	.	.	PUNCT
cet-2331	82	1	these	these	DET
cet-2331	82	2	results	result	NOUN
cet-2331	82	3	are	be	AUX
cet-2331	82	4	in	in	ADP
cet-2331	82	5	agreement	agreement	NOUN
cet-2331	82	6	with	with	ADP
cet-2331	82	7	the	the	DET
cet-2331	82	8	highest	high	ADJ
cet-2331	82	9	potential	potential	NOUN
cet-2331	82	10	of	of	ADP
cet-2331	82	11	coke	coke	NOUN
cet-2331	82	12	formation	formation	NOUN
cet-2331	82	13	for	for	ADP
cet-2331	82	14	s5	s5	PROPN
cet-2331	82	15	sample	sample	NOUN
cet-2331	82	16	,	,	PUNCT
cet-2331	82	17	which	which	PRON
cet-2331	82	18	is	be	AUX
cet-2331	82	19	consistent	consistent	ADJ
cet-2331	82	20	with	with	ADP
cet-2331	82	21	the	the	DET
cet-2331	82	22	carbon	carbon	NOUN
cet-2331	82	23	residue	residue	NOUN
cet-2331	82	24	percent	percent	NOUN
cet-2331	82	25	(	(	PUNCT
cet-2331	82	26	%	%	INTJ
cet-2331	82	27	ccr	ccr	PROPN
cet-2331	82	28	)	)	PUNCT
cet-2331	82	29	obtained	obtain	VERB
cet-2331	82	30	(	(	PUNCT
cet-2331	82	31	table	table	NOUN
cet-2331	82	32	1	1	NUM
cet-2331	82	33	)	)	PUNCT
cet-2331	82	34	.	.	PUNCT
cet-2331	83	1	comparing	compare	VERB
cet-2331	83	2	between	between	ADP
cet-2331	83	3	classes	class	NOUN
cet-2331	83	4	,	,	PUNCT
cet-2331	83	5	carboxylic	carboxylic	ADJ
cet-2331	83	6	acid	acid	NOUN
cet-2331	83	7	structures	structure	NOUN
cet-2331	83	8	exhibit	exhibit	VERB
cet-2331	83	9	high	high	ADJ
cet-2331	83	10	condensed	condense	VERB
cet-2331	83	11	compounds	compound	NOUN
cet-2331	83	12	compared	compare	VERB
cet-2331	83	13	to	to	ADP
cet-2331	83	14	pyridineand	pyridineand	PROPN
cet-2331	83	15	pyrrole	pyrrole	NOUN
cet-2331	83	16	-	-	PUNCT
cet-2331	83	17	like	like	ADJ
cet-2331	83	18	species	specie	NOUN
cet-2331	83	19	.	.	PUNCT
cet-2331	84	1	4	4	X
cet-2331	84	2	.	.	X
cet-2331	84	3	conclusions	conclusion	NOUN
cet-2331	84	4	positiveand	positiveand	PROPN
cet-2331	84	5	negativemode	negativemode	PROPN
cet-2331	84	6	electrospray	electrospray	VERB
cet-2331	84	7	ft	ft	PROPN
cet-2331	84	8	-	-	PUNCT
cet-2331	84	9	icr	icr	NOUN
cet-2331	84	10	ms	ms	NOUN
cet-2331	84	11	allowed	allow	VERB
cet-2331	84	12	selective	selective	ADJ
cet-2331	84	13	ionization	ionization	NOUN
cet-2331	84	14	of	of	ADP
cet-2331	84	15	polar	polar	ADJ
cet-2331	84	16	compounds	compound	NOUN
cet-2331	84	17	of	of	ADP
cet-2331	84	18	colombian	colombian	ADJ
cet-2331	84	19	vacuum	vacuum	NOUN
cet-2331	84	20	residue	residue	NOUN
cet-2331	84	21	and	and	CCONJ
cet-2331	84	22	its	its	PRON
cet-2331	84	23	sfef	sfef	NOUN
cet-2331	84	24	subfractions	subfraction	NOUN
cet-2331	84	25	.	.	PUNCT
cet-2331	85	1	it	it	PRON
cet-2331	85	2	was	be	AUX
cet-2331	85	3	possible	possible	ADJ
cet-2331	85	4	to	to	PART
cet-2331	85	5	identify	identify	VERB
cet-2331	85	6	chemical	chemical	ADJ
cet-2331	85	7	compositional	compositional	ADJ
cet-2331	85	8	differences	difference	NOUN
cet-2331	85	9	between	between	ADP
cet-2331	85	10	the	the	DET
cet-2331	85	11	subfractions	subfraction	NOUN
cet-2331	85	12	,	,	PUNCT
cet-2331	85	13	being	be	AUX
cet-2331	85	14	likely	likely	ADJ
cet-2331	85	15	even	even	ADV
cet-2331	85	16	the	the	DET
cet-2331	85	17	detection	detection	NOUN
cet-2331	85	18	of	of	ADP
cet-2331	85	19	compounds	compound	NOUN
cet-2331	85	20	not	not	PART
cet-2331	85	21	found	find	VERB
cet-2331	85	22	in	in	ADP
cet-2331	85	23	the	the	DET
cet-2331	85	24	unfractionated	unfractionate	VERB
cet-2331	85	25	vacuum	vacuum	NOUN
cet-2331	85	26	residue	residue	NOUN
cet-2331	85	27	.	.	PUNCT
cet-2331	86	1	the	the	DET
cet-2331	86	2	nitrogen	nitrogen	NOUN
cet-2331	86	3	-	-	PUNCT
cet-2331	86	4	containing	contain	VERB
cet-2331	86	5	compounds	compound	NOUN
cet-2331	86	6	were	be	AUX
cet-2331	86	7	the	the	DET
cet-2331	86	8	most	most	ADV
cet-2331	86	9	predominant	predominant	ADJ
cet-2331	86	10	in	in	ADP
cet-2331	86	11	the	the	DET
cet-2331	86	12	vacuum	vacuum	NOUN
cet-2331	86	13	residue	residue	NOUN
cet-2331	86	14	.	.	PUNCT
cet-2331	87	1	among	among	ADP
cet-2331	87	2	these	these	DET
cet-2331	87	3	nitrogen	nitrogen	NOUN
cet-2331	87	4	classes	class	NOUN
cet-2331	87	5	,	,	PUNCT
cet-2331	87	6	the	the	DET
cet-2331	87	7	n1	n1	ADJ
cet-2331	87	8	class	class	NOUN
cet-2331	87	9	species	specie	NOUN
cet-2331	87	10	were	be	AUX
cet-2331	87	11	the	the	DET
cet-2331	87	12	most	most	ADV
cet-2331	87	13	abundant	abundant	ADJ
cet-2331	87	14	.	.	PUNCT
cet-2331	88	1	pyridine	pyridine	NOUN
cet-2331	88	2	-	-	PUNCT
cet-2331	88	3	like	like	ADJ
cet-2331	88	4	structures	structure	NOUN
cet-2331	88	5	exhibited	exhibit	VERB
cet-2331	88	6	wider	wide	ADJ
cet-2331	88	7	range	range	NOUN
cet-2331	88	8	in	in	ADP
cet-2331	88	9	aromatic	aromatic	ADJ
cet-2331	88	10	ring	ring	NOUN
cet-2331	88	11	content	content	NOUN
cet-2331	88	12	than	than	ADP
cet-2331	88	13	pyrrole	pyrrole	NOUN
cet-2331	88	14	compounds	compound	NOUN
cet-2331	88	15	.	.	PUNCT
cet-2331	89	1	moreover	moreover	ADV
cet-2331	89	2	,	,	PUNCT
cet-2331	89	3	acid	acid	ADJ
cet-2331	89	4	species	specie	NOUN
cet-2331	89	5	with	with	ADP
cet-2331	89	6	two	two	NUM
cet-2331	89	7	oxygen	oxygen	NOUN
cet-2331	89	8	atoms	atom	NOUN
cet-2331	89	9	were	be	AUX
cet-2331	89	10	identified	identify	VERB
cet-2331	89	11	likely	likely	ADJ
cet-2331	89	12	derivatives	derivative	NOUN
cet-2331	89	13	of	of	ADP
cet-2331	89	14	carboxylic	carboxylic	ADJ
cet-2331	89	15	acids	acid	NOUN
cet-2331	89	16	and	and	CCONJ
cet-2331	89	17	phenols	phenol	NOUN
cet-2331	89	18	.	.	PUNCT
cet-2331	90	1	the	the	DET
cet-2331	90	2	end	end	NOUN
cet-2331	90	3	-	-	PUNCT
cet-2331	90	4	cut	cut	NOUN
cet-2331	90	5	showed	show	VERB
cet-2331	90	6	to	to	PART
cet-2331	90	7	be	be	AUX
cet-2331	90	8	enriched	enrich	VERB
cet-2331	90	9	in	in	ADP
cet-2331	90	10	multi	multi	ADJ
cet-2331	90	11	-	-	ADJ
cet-2331	90	12	heteroatom	heteroatom	ADJ
cet-2331	90	13	compounds	compound	NOUN
cet-2331	90	14	attributed	attribute	VERB
cet-2331	90	15	to	to	ADP
cet-2331	90	16	the	the	DET
cet-2331	90	17	concentration	concentration	NOUN
cet-2331	90	18	of	of	ADP
cet-2331	90	19	asphaltenes	asphaltene	NOUN
cet-2331	90	20	in	in	ADP
cet-2331	90	21	this	this	DET
cet-2331	90	22	subfraction	subfraction	NOUN
cet-2331	90	23	,	,	PUNCT
cet-2331	90	24	also	also	ADV
cet-2331	90	25	,	,	PUNCT
cet-2331	90	26	this	this	DET
cet-2331	90	27	subfraction	subfraction	NOUN
cet-2331	90	28	content	content	NOUN
cet-2331	90	29	the	the	DET
cet-2331	90	30	most	most	ADV
cet-2331	90	31	condensed	condensed	ADJ
cet-2331	90	32	aromatic	aromatic	ADJ
cet-2331	90	33	compounds	compound	NOUN
cet-2331	90	34	derived	derive	VERB
cet-2331	90	35	from	from	ADP
cet-2331	90	36	the	the	DET
cet-2331	90	37	vacuum	vacuum	NOUN
cet-2331	90	38	residue	residue	NOUN
cet-2331	90	39	.	.	PUNCT
cet-2331	91	1	sfef	sfef	NOUN
cet-2331	91	2	fractionation	fractionation	NOUN
cet-2331	91	3	combined	combine	VERB
cet-2331	91	4	with	with	ADP
cet-2331	91	5	ft	ft	PROPN
cet-2331	91	6	-	-	PUNCT
cet-2331	91	7	icr	icr	NOUN
cet-2331	91	8	ms	ms	NOUN
cet-2331	91	9	provide	provide	VERB
cet-2331	91	10	a	a	DET
cet-2331	91	11	potential	potential	ADJ
cet-2331	91	12	tool	tool	NOUN
cet-2331	91	13	for	for	ADP
cet-2331	91	14	the	the	DET
cet-2331	91	15	understanding	understanding	NOUN
cet-2331	91	16	of	of	ADP
cet-2331	91	17	the	the	DET
cet-2331	91	18	molecular	molecular	ADJ
cet-2331	91	19	composition	composition	NOUN
cet-2331	91	20	of	of	ADP
cet-2331	91	21	the	the	DET
cet-2331	91	22	vacuum	vacuum	NOUN
cet-2331	91	23	residue	residue	NOUN
cet-2331	91	24	.	.	PUNCT
cet-2331	92	1	although	although	SCONJ
cet-2331	92	2	the	the	DET
cet-2331	92	3	results	result	NOUN
cet-2331	92	4	obtained	obtain	VERB
cet-2331	92	5	in	in	ADP
cet-2331	92	6	this	this	DET
cet-2331	92	7	work	work	NOUN
cet-2331	92	8	are	be	AUX
cet-2331	92	9	characteristic	characteristic	ADJ
cet-2331	92	10	of	of	ADP
cet-2331	92	11	a	a	DET
cet-2331	92	12	vacuum	vacuum	NOUN
cet-2331	92	13	residue	residue	NOUN
cet-2331	92	14	available	available	ADJ
cet-2331	92	15	only	only	ADV
cet-2331	92	16	in	in	ADP
cet-2331	92	17	a	a	DET
cet-2331	92	18	specific	specific	ADJ
cet-2331	92	19	region	region	NOUN
cet-2331	92	20	of	of	ADP
cet-2331	92	21	the	the	DET
cet-2331	92	22	world	world	NOUN
cet-2331	92	23	,	,	PUNCT
cet-2331	92	24	these	these	DET
cet-2331	92	25	findings	finding	NOUN
cet-2331	92	26	can	can	AUX
cet-2331	92	27	be	be	AUX
cet-2331	92	28	compared	compare	VERB
cet-2331	92	29	with	with	ADP
cet-2331	92	30	the	the	DET
cet-2331	92	31	1607	1607	NUM
cet-2331	92	32	characterization	characterization	NOUN
cet-2331	92	33	of	of	ADP
cet-2331	92	34	other	other	ADJ
cet-2331	92	35	vacuum	vacuum	NOUN
cet-2331	92	36	residua	residuum	NOUN
cet-2331	92	37	in	in	ADP
cet-2331	92	38	order	order	NOUN
cet-2331	92	39	to	to	PART
cet-2331	92	40	determine	determine	VERB
cet-2331	92	41	compositional	compositional	ADJ
cet-2331	92	42	differences	difference	NOUN
cet-2331	92	43	or	or	CCONJ
cet-2331	92	44	similarities	similarity	NOUN
cet-2331	92	45	that	that	PRON
cet-2331	92	46	explain	explain	VERB
cet-2331	92	47	their	their	PRON
cet-2331	92	48	particular	particular	ADJ
cet-2331	92	49	properties	property	NOUN
cet-2331	92	50	.	.	PUNCT
cet-2331	93	1	acknowledgments	acknowledgment	NOUN
cet-2331	93	2	the	the	DET
cet-2331	93	3	development	development	NOUN
cet-2331	93	4	of	of	ADP
cet-2331	93	5	this	this	DET
cet-2331	93	6	work	work	NOUN
cet-2331	93	7	was	be	AUX
cet-2331	93	8	supported	support	VERB
cet-2331	93	9	by	by	ADP
cet-2331	93	10	the	the	DET
cet-2331	93	11	research	research	NOUN
cet-2331	93	12	agreement	agreement	NOUN
cet-2331	93	13	no	no	DET
cet-2331	93	14	5211770	5211770	NUM
cet-2331	93	15	universidad	universidad	PROPN
cet-2331	93	16	industrial	industrial	PROPN
cet-2331	93	17	de	de	X
cet-2331	93	18	santander	santander	NOUN
cet-2331	93	19	–	–	PUNCT
cet-2331	93	20	icp	icp	PROPN
cet-2331	93	21	(	(	PUNCT
cet-2331	93	22	ecopetrol	ecopetrol	PROPN
cet-2331	93	23	s.a	s.a	PROPN
cet-2331	93	24	.	.	PROPN
cet-2331	93	25	)	)	PUNCT
cet-2331	94	1	and	and	CCONJ
cet-2331	94	2	colciencias	colciencia	NOUN
cet-2331	94	3	under	under	ADP
cet-2331	94	4	the	the	DET
cet-2331	94	5	project	project	NOUN
cet-2331	94	6	no	no	INTJ
cet-2331	94	7	.	.	PUNCT
cet-2331	95	1	fp44842	fp44842	NOUN
cet-2331	95	2	-	-	PUNCT
cet-2331	95	3	039	039	NUM
cet-2331	95	4	-	-	PUNCT
cet-2331	95	5	2015	2015	NUM
cet-2331	95	6	.	.	PUNCT
cet-2331	96	1	juan	juan	PROPN
cet-2331	96	2	arenas	arenas	PROPN
cet-2331	96	3	-	-	PROPN
cet-2331	96	4	diaz	diaz	PROPN
cet-2331	96	5	and	and	CCONJ
cet-2331	96	6	diana	diana	PROPN
cet-2331	96	7	palacio	palacio	PROPN
cet-2331	96	8	thank	thank	PROPN
cet-2331	96	9	to	to	ADP
cet-2331	96	10	colciencias	colciencias	PROPN
cet-2331	96	11	for	for	ADP
cet-2331	96	12	the	the	DET
cet-2331	96	13	graduate	graduate	NOUN
cet-2331	96	14	fellowships	fellowship	NOUN
cet-2331	96	15	.	.	PUNCT
cet-2331	97	1	reference	reference	NOUN
cet-2331	97	2	barrow	barrow	PROPN
cet-2331	97	3	m.	m.	PROPN
cet-2331	97	4	,	,	PUNCT
cet-2331	97	5	headley	headley	PROPN
cet-2331	97	6	j.	j.	PROPN
cet-2331	97	7	,	,	PUNCT
cet-2331	97	8	peru	peru	PROPN
cet-2331	97	9	k.	k.	PROPN
cet-2331	97	10	,	,	PUNCT
cet-2331	97	11	derrick	derrick	PROPN
cet-2331	97	12	p.	p.	PROPN
cet-2331	97	13	,	,	PUNCT
cet-2331	97	14	2004	2004	NUM
cet-2331	97	15	,	,	PUNCT
cet-2331	97	16	fourier	fourier	NOUN
cet-2331	97	17	transform	transform	VERB
cet-2331	97	18	ion	ion	NOUN
cet-2331	97	19	cyclotron	cyclotron	NOUN
cet-2331	97	20	resonance	resonance	NOUN
cet-2331	97	21	mass	mass	NOUN
cet-2331	97	22	spectrometry	spectrometry	NOUN
cet-2331	97	23	of	of	ADP
cet-2331	97	24	principal	principal	ADJ
cet-2331	97	25	components	component	NOUN
cet-2331	97	26	in	in	ADP
cet-2331	97	27	oilsands	oilsand	NOUN
cet-2331	97	28	napthenic	napthenic	ADJ
cet-2331	97	29	acids	acid	NOUN
cet-2331	97	30	,	,	PUNCT
cet-2331	97	31	journal	journal	NOUN
cet-2331	97	32	of	of	ADP
cet-2331	97	33	chromatography	chromatography	NOUN
cet-2331	97	34	a	a	PRON
cet-2331	97	35	,	,	PUNCT
cet-2331	97	36	1058	1058	NUM
cet-2331	97	37	,	,	PUNCT
cet-2331	97	38	51	51	NUM
cet-2331	97	39	-	-	SYM
cet-2331	97	40	59	59	NUM
cet-2331	97	41	.	.	PUNCT
cet-2331	98	1	furimsky	furimsky	PROPN
cet-2331	98	2	e.	e.	PROPN
cet-2331	98	3	,	,	PUNCT
cet-2331	98	4	massoth	massoth	PROPN
cet-2331	98	5	f.	f.	PROPN
cet-2331	98	6	,	,	PUNCT
cet-2331	98	7	1999	1999	NUM
cet-2331	98	8	,	,	PUNCT
cet-2331	98	9	deactivation	deactivation	NOUN
cet-2331	98	10	of	of	ADP
cet-2331	98	11	hydroprocessing	hydroprocesse	VERB
cet-2331	98	12	catalyst	catalyst	NOUN
cet-2331	98	13	,	,	PUNCT
cet-2331	98	14	catalysis	catalysis	NOUN
cet-2331	98	15	today	today	NOUN
cet-2331	98	16	,	,	PUNCT
cet-2331	98	17	52	52	NUM
cet-2331	98	18	,	,	PUNCT
cet-2331	98	19	381	381	NUM
cet-2331	98	20	-	-	SYM
cet-2331	98	21	495	495	NUM
cet-2331	98	22	.	.	PUNCT
cet-2331	99	1	hsu	hsu	PROPN
cet-2331	99	2	c.	c.	PROPN
cet-2331	99	3	,	,	PUNCT
cet-2331	99	4	shi	shi	PROPN
cet-2331	99	5	q.	q.	PROPN
cet-2331	99	6	,	,	PUNCT
cet-2331	99	7	2013	2013	NUM
cet-2331	99	8	,	,	PUNCT
cet-2331	99	9	prospects	prospect	NOUN
cet-2331	99	10	for	for	ADP
cet-2331	99	11	petroleum	petroleum	NOUN
cet-2331	99	12	mass	mass	NOUN
cet-2331	99	13	spectrometry	spectrometry	NOUN
cet-2331	99	14	and	and	CCONJ
cet-2331	99	15	chromatography	chromatography	NOUN
cet-2331	99	16	,	,	PUNCT
cet-2331	99	17	science	science	NOUN
cet-2331	99	18	china	china	PROPN
cet-2331	99	19	chemistry	chemistry	PROPN
cet-2331	99	20	,	,	PUNCT
cet-2331	99	21	56	56	NUM
cet-2331	99	22	,	,	PUNCT
cet-2331	99	23	833	833	NUM
cet-2331	99	24	-	-	SYM
cet-2331	99	25	839	839	NUM
cet-2331	99	26	.	.	PUNCT
cet-2331	100	1	klein	klein	PROPN
cet-2331	100	2	g.	g.	PROPN
cet-2331	100	3	,	,	PUNCT
cet-2331	100	4	kim	kim	PROPN
cet-2331	100	5	s.	s.	PROPN
cet-2331	100	6	,	,	PUNCT
cet-2331	100	7	rodgers	rodgers	PROPN
cet-2331	100	8	r.	r.	PROPN
cet-2331	100	9	,	,	PUNCT
cet-2331	100	10	marshall	marshall	PROPN
cet-2331	100	11	a.	a.	PROPN
cet-2331	100	12	,	,	PUNCT
cet-2331	100	13	2006a	2006a	NUM
cet-2331	100	14	,	,	PUNCT
cet-2331	100	15	mass	mass	ADJ
cet-2331	100	16	spectral	spectral	ADJ
cet-2331	100	17	analysis	analysis	NOUN
cet-2331	100	18	of	of	ADP
cet-2331	100	19	asphaltenes	asphaltene	NOUN
cet-2331	100	20	.	.	PUNCT
cet-2331	101	1	i.	i.	PROPN
cet-2331	101	2	compositional	compositional	PROPN
cet-2331	101	3	differences	difference	NOUN
cet-2331	101	4	between	between	ADP
cet-2331	101	5	pressure	pressure	NOUN
cet-2331	101	6	-	-	PUNCT
cet-2331	101	7	drop	drop	NOUN
cet-2331	101	8	and	and	CCONJ
cet-2331	101	9	solvent	solvent	NOUN
cet-2331	101	10	-	-	PUNCT
cet-2331	101	11	drop	drop	NOUN
cet-2331	101	12	asphaltenes	asphaltene	NOUN
cet-2331	101	13	determinded	determinde	VERB
cet-2331	101	14	by	by	ADP
cet-2331	101	15	electrospray	electrospray	ADJ
cet-2331	101	16	ionization	ionization	NOUN
cet-2331	101	17	fourier	fourier	NOUN
cet-2331	101	18	transform	transform	VERB
cet-2331	101	19	ion	ion	NOUN
cet-2331	101	20	ciclotron	ciclotron	NOUN
cet-2331	101	21	resonance	resonance	NOUN
cet-2331	101	22	mass	mass	PROPN
cet-2331	101	23	spectrometry	spectrometry	NOUN
cet-2331	101	24	,	,	PUNCT
cet-2331	101	25	energy	energy	NOUN
cet-2331	101	26	fuels	fuel	NOUN
cet-2331	101	27	,	,	PUNCT
cet-2331	101	28	20	20	NUM
cet-2331	101	29	,	,	PUNCT
cet-2331	101	30	1965	1965	NUM
cet-2331	101	31	-	-	SYM
cet-2331	101	32	1972	1972	NUM
cet-2331	101	33	.	.	PUNCT
cet-2331	102	1	klein	klein	PROPN
cet-2331	102	2	g.	g.	PROPN
cet-2331	102	3	,	,	PUNCT
cet-2331	102	4	rodgers	rodgers	PROPN
cet-2331	102	5	r.	r.	PROPN
cet-2331	102	6	,	,	PUNCT
cet-2331	102	7	marshall	marshall	PROPN
cet-2331	102	8	a.	a.	PROPN
cet-2331	102	9	,	,	PUNCT
cet-2331	102	10	2006b	2006b	NUM
cet-2331	102	11	,	,	PUNCT
cet-2331	102	12	identification	identification	NOUN
cet-2331	102	13	of	of	ADP
cet-2331	102	14	hydrotreatment	hydrotreatment	NOUN
cet-2331	102	15	-	-	PUNCT
cet-2331	102	16	resistant	resistant	ADJ
cet-2331	102	17	hetroatomic	hetroatomic	ADJ
cet-2331	102	18	species	specie	NOUN
cet-2331	102	19	in	in	ADP
cet-2331	102	20	a	a	DET
cet-2331	102	21	crude	crude	ADJ
cet-2331	102	22	oil	oil	NOUN
cet-2331	102	23	distillation	distillation	NOUN
cet-2331	102	24	cut	cut	VERB
cet-2331	102	25	by	by	ADP
cet-2331	102	26	electrospray	electrospray	NOUN
cet-2331	102	27	ionization	ionization	NOUN
cet-2331	102	28	ft	ft	PROPN
cet-2331	102	29	-	-	PUNCT
cet-2331	102	30	icr	icr	PROPN
cet-2331	102	31	mass	mass	PROPN
cet-2331	102	32	spectrometry	spectrometry	NOUN
cet-2331	102	33	,	,	PUNCT
cet-2331	102	34	fuel	fuel	NOUN
cet-2331	102	35	,	,	PUNCT
cet-2331	102	36	85	85	NUM
cet-2331	102	37	,	,	PUNCT
cet-2331	102	38	2071	2071	NUM
cet-2331	102	39	-	-	SYM
cet-2331	102	40	2080	2080	NUM
cet-2331	102	41	.	.	PUNCT
cet-2331	103	1	liu	liu	PROPN
cet-2331	103	2	t.	t.	PROPN
cet-2331	103	3	,	,	PUNCT
cet-2331	103	4	lu	lu	PROPN
cet-2331	103	5	j.	j.	PROPN
cet-2331	103	6	,	,	PUNCT
cet-2331	103	7	zhao	zhao	PROPN
cet-2331	103	8	xu	xu	PROPN
cet-2331	103	9	.	.	PUNCT
cet-2331	103	10	,	,	PUNCT
cet-2331	103	11	zhou	zhou	PROPN
cet-2331	103	12	y.	y.	PROPN
cet-2331	103	13	,	,	PUNCT
cet-2331	103	14	wei	wei	PROPN
cet-2331	103	15	q.	q.	PROPN
cet-2331	103	16	,	,	PUNCT
cet-2331	103	17	xu	xu	PROPN
cet-2331	103	18	c.	c.	PROPN
cet-2331	103	19	,	,	PUNCT
cet-2331	103	20	zhang	zhang	PROPN
cet-2331	103	21	y.	y.	PROPN
cet-2331	103	22	,	,	PUNCT
cet-2331	103	23	ding	ding	NOUN
cet-2331	103	24	y.	y.	PROPN
cet-2331	103	25	,	,	PUNCT
cet-2331	103	26	zhang	zhang	PROPN
cet-2331	103	27	t.	t.	PROPN
cet-2331	103	28	,	,	PUNCT
cet-2331	103	29	tao	tao	PROPN
cet-2331	103	30	x.	x.	PROPN
cet-2331	103	31	,	,	PUNCT
cet-2331	103	32	ju	ju	PROPN
cet-2331	103	33	l.	l.	PROPN
cet-2331	103	34	,	,	PUNCT
cet-2331	103	35	shi	shi	PROPN
cet-2331	103	36	q.	q.	PROPN
cet-2331	103	37	,	,	PUNCT
cet-2331	103	38	2015	2015	NUM
cet-2331	103	39	,	,	PUNCT
cet-2331	103	40	distribution	distribution	NOUN
cet-2331	103	41	of	of	ADP
cet-2331	103	42	vanadium	vanadium	NOUN
cet-2331	103	43	compounds	compound	NOUN
cet-2331	103	44	in	in	ADP
cet-2331	103	45	petroleum	petroleum	NOUN
cet-2331	103	46	vacuum	vacuum	NOUN
cet-2331	103	47	residuum	residuum	NOUN
cet-2331	103	48	and	and	CCONJ
cet-2331	103	49	their	their	PRON
cet-2331	103	50	transformations	transformation	NOUN
cet-2331	103	51	in	in	ADP
cet-2331	103	52	hydrodemetallization	hydrodemetallization	NOUN
cet-2331	103	53	.	.	PUNCT
cet-2331	104	1	energy	energy	NOUN
cet-2331	104	2	fuels	fuel	NOUN
cet-2331	104	3	,	,	PUNCT
cet-2331	104	4	29	29	NUM
cet-2331	104	5	,	,	PUNCT
cet-2331	104	6	2089	2089	NUM
cet-2331	104	7	-	-	SYM
cet-2331	104	8	2096	2096	NUM
cet-2331	104	9	.	.	PUNCT
cet-2331	105	1	marshall	marshall	PROPN
cet-2331	105	2	a.	a.	PROPN
cet-2331	105	3	,	,	PUNCT
cet-2331	105	4	rodgers	rodger	VERB
cet-2331	105	5	r.	r.	PROPN
cet-2331	105	6	,	,	PUNCT
cet-2331	105	7	2004	2004	NUM
cet-2331	105	8	,	,	PUNCT
cet-2331	105	9	petroleomics	petroleomic	NOUN
cet-2331	105	10	:	:	PUNCT
cet-2331	105	11	the	the	DET
cet-2331	105	12	next	next	ADJ
cet-2331	105	13	grand	grand	ADJ
cet-2331	105	14	challenge	challenge	NOUN
cet-2331	105	15	for	for	ADP
cet-2331	105	16	chemical	chemical	ADJ
cet-2331	105	17	analysis	analysis	NOUN
cet-2331	105	18	,	,	PUNCT
cet-2331	105	19	accounts	account	NOUN
cet-2331	105	20	of	of	ADP
cet-2331	105	21	chemical	chemical	ADJ
cet-2331	105	22	research	research	NOUN
cet-2331	105	23	,	,	PUNCT
cet-2331	105	24	37	37	NUM
cet-2331	105	25	,	,	PUNCT
cet-2331	105	26	53	53	NUM
cet-2331	105	27	-	-	SYM
cet-2331	105	28	59	59	NUM
cet-2331	105	29	.	.	PUNCT
cet-2331	106	1	marshall	marshall	PROPN
cet-2331	106	2	a.	a.	PROPN
cet-2331	106	3	,	,	PUNCT
cet-2331	106	4	rodgers	rodger	VERB
cet-2331	106	5	r.	r.	PROPN
cet-2331	106	6	,	,	PUNCT
cet-2331	106	7	2008	2008	NUM
cet-2331	106	8	,	,	PUNCT
cet-2331	106	9	petroleomics	petroleomic	NOUN
cet-2331	106	10	:	:	PUNCT
cet-2331	106	11	chemistry	chemistry	NOUN
cet-2331	106	12	of	of	ADP
cet-2331	106	13	the	the	DET
cet-2331	106	14	underworld	underworld	NOUN
cet-2331	106	15	,	,	PUNCT
cet-2331	106	16	proceedings	proceeding	NOUN
cet-2331	106	17	of	of	ADP
cet-2331	106	18	the	the	DET
cet-2331	106	19	national	national	PROPN
cet-2331	106	20	academy	academy	PROPN
cet-2331	106	21	of	of	ADP
cet-2331	106	22	sciences	sciences	PROPN
cet-2331	106	23	,	,	PUNCT
cet-2331	106	24	105	105	NUM
cet-2331	106	25	,	,	PUNCT
cet-2331	106	26	18090	18090	NUM
cet-2331	106	27	-	-	SYM
cet-2331	106	28	18095	18095	NUM
cet-2331	106	29	.	.	PUNCT
cet-2331	107	1	müller	müller	PROPN
cet-2331	107	2	h.	h.	PROPN
cet-2331	107	3	,	,	PUNCT
cet-2331	107	4	anderson	anderson	PROPN
cet-2331	107	5	j.	j.	PROPN
cet-2331	107	6	,	,	PUNCT
cet-2331	107	7	2005	2005	NUM
cet-2331	107	8	,	,	PUNCT
cet-2331	107	9	characterization	characterization	NOUN
cet-2331	107	10	of	of	ADP
cet-2331	107	11	high	high	ADJ
cet-2331	107	12	-	-	PUNCT
cet-2331	107	13	molecular	molecular	ADJ
cet-2331	107	14	-	-	PUNCT
cet-2331	107	15	weight	weight	NOUN
cet-2331	107	16	sulfur	sulfur	NOUN
cet-2331	107	17	-	-	PUNCT
cet-2331	107	18	compounds	compound	NOUN
cet-2331	107	19	aromatics	aromatic	NOUN
cet-2331	107	20	in	in	ADP
cet-2331	107	21	vacuum	vacuum	NOUN
cet-2331	107	22	residues	residue	NOUN
cet-2331	107	23	using	use	VERB
cet-2331	107	24	fourier	fourier	NOUN
cet-2331	107	25	transform	transform	NOUN
cet-2331	107	26	ion	ion	NOUN
cet-2331	107	27	cyclotron	cyclotron	NOUN
cet-2331	107	28	resonance	resonance	NOUN
cet-2331	107	29	mass	mass	NOUN
cet-2331	107	30	spectrometry	spectrometry	NOUN
cet-2331	107	31	,	,	PUNCT
cet-2331	107	32	analytical	analytical	ADJ
cet-2331	107	33	chemistry	chemistry	NOUN
cet-2331	107	34	,	,	PUNCT
cet-2331	107	35	77	77	NUM
cet-2331	107	36	,	,	PUNCT
cet-2331	107	37	2536	2536	NUM
cet-2331	107	38	-	-	SYM
cet-2331	107	39	2543	2543	NUM
cet-2331	107	40	.	.	PUNCT
cet-2331	108	1	pakarinen	pakarinen	PROPN
cet-2331	108	2	j.	j.	PROPN
cet-2331	108	3	,	,	PUNCT
cet-2331	108	4	teräväinen	teräväinen	PROPN
cet-2331	108	5	m.	m.	NOUN
cet-2331	108	6	,	,	PUNCT
cet-2331	108	7	pirskanen	pirskanen	NOUN
cet-2331	108	8	a.	a.	NOUN
cet-2331	108	9	,	,	PUNCT
cet-2331	108	10	wickström	wickström	NOUN
cet-2331	108	11	k.	k.	PROPN
cet-2331	108	12	,	,	PUNCT
cet-2331	108	13	vainiotalo	vainiotalo	PROPN
cet-2331	108	14	p.	p.	NOUN
cet-2331	108	15	,	,	PUNCT
cet-2331	108	16	2007	2007	NUM
cet-2331	108	17	,	,	PUNCT
cet-2331	108	18	a	a	DET
cet-2331	108	19	positive	positive	ADJ
cet-2331	108	20	-	-	PUNCT
cet-2331	108	21	ion	ion	NOUN
cet-2331	108	22	electrospray	electrospray	NOUN
cet-2331	108	23	ionization	ionization	NOUN
cet-2331	108	24	fourier	fourier	NOUN
cet-2331	108	25	transform	transform	VERB
cet-2331	108	26	ion	ion	NOUN
cet-2331	108	27	cyclotron	cyclotron	NOUN
cet-2331	108	28	resonance	resonance	NOUN
cet-2331	108	29	mass	mass	NOUN
cet-2331	108	30	spectrometry	spectrometry	NOUN
cet-2331	108	31	study	study	NOUN
cet-2331	108	32	of	of	ADP
cet-2331	108	33	russian	russian	ADJ
cet-2331	108	34	and	and	CCONJ
cet-2331	108	35	north	north	NOUN
cet-2331	108	36	sea	sea	NOUN
cet-2331	108	37	crude	crude	ADJ
cet-2331	108	38	oils	oil	NOUN
cet-2331	108	39	and	and	CCONJ
cet-2331	108	40	their	their	PRON
cet-2331	108	41	six	six	NUM
cet-2331	108	42	distillation	distillation	NOUN
cet-2331	108	43	fractions	fraction	NOUN
cet-2331	108	44	,	,	PUNCT
cet-2331	108	45	energy	energy	NOUN
cet-2331	108	46	fuels	fuel	NOUN
cet-2331	108	47	,	,	PUNCT
cet-2331	108	48	21	21	NUM
cet-2331	108	49	,	,	PUNCT
cet-2331	108	50	3369	3369	NUM
cet-2331	108	51	-	-	SYM
cet-2331	108	52	3374	3374	NUM
cet-2331	108	53	.	.	PUNCT
cet-2331	109	1	parra	parra	PROPN
cet-2331	109	2	m.	m.	PROPN
cet-2331	109	3	,	,	PUNCT
cet-2331	109	4	león	león	PROPN
cet-2331	109	5	a.	a.	PROPN
cet-2331	109	6	,	,	PUNCT
cet-2331	109	7	hoyos	hoyos	PROPN
cet-2331	109	8	l.	l.	PROPN
cet-2331	109	9	,	,	PUNCT
cet-2331	109	10	2010	2010	NUM
cet-2331	109	11	,	,	PUNCT
cet-2331	109	12	separation	separation	NOUN
cet-2331	109	13	of	of	ADP
cet-2331	109	14	fractions	fraction	NOUN
cet-2331	109	15	from	from	ADP
cet-2331	109	16	vacuum	vacuum	NOUN
cet-2331	109	17	reside	reside	NOUN
cet-2331	109	18	by	by	ADP
cet-2331	109	19	supercritical	supercritical	ADJ
cet-2331	109	20	extraction	extraction	NOUN
cet-2331	109	21	.	.	PUNCT
cet-2331	110	1	ciencia	ciencia	PROPN
cet-2331	110	2	,	,	PUNCT
cet-2331	110	3	tecnología	tecnología	NOUN
cet-2331	110	4	y	y	PROPN
cet-2331	110	5	futuro	futuro	PROPN
cet-2331	110	6	,	,	PUNCT
cet-2331	110	7	4	4	NUM
cet-2331	110	8	,	,	PUNCT
cet-2331	110	9	83	83	NUM
cet-2331	110	10	-	-	SYM
cet-2331	110	11	90	90	NUM
cet-2331	110	12	.	.	PUNCT
cet-2331	111	1	purcell	purcell	PROPN
cet-2331	111	2	j.	j.	PROPN
cet-2331	111	3	,	,	PUNCT
cet-2331	111	4	merdrignac	merdrignac	PROPN
cet-2331	111	5	i.	i.	PROPN
cet-2331	111	6	,	,	PUNCT
cet-2331	111	7	rodgers	rodgers	PROPN
cet-2331	111	8	r.	r.	PROPN
cet-2331	111	9	,	,	PUNCT
cet-2331	111	10	marshall	marshall	PROPN
cet-2331	111	11	a.	a.	PROPN
cet-2331	111	12	,	,	PUNCT
cet-2331	111	13	gauthier	gauthier	PROPN
cet-2331	111	14	t.	t.	PROPN
cet-2331	111	15	,	,	PUNCT
cet-2331	111	16	guibard	guibard	PROPN
cet-2331	111	17	i.	i.	NOUN
cet-2331	111	18	,	,	PUNCT
cet-2331	111	19	2010	2010	NUM
cet-2331	111	20	,	,	PUNCT
cet-2331	111	21	stepwise	stepwise	ADJ
cet-2331	111	22	structural	structural	ADJ
cet-2331	111	23	characterization	characterization	NOUN
cet-2331	111	24	of	of	ADP
cet-2331	111	25	asphaltenes	asphaltene	NOUN
cet-2331	111	26	during	during	ADP
cet-2331	111	27	deep	deep	ADJ
cet-2331	111	28	hydroconversion	hydroconversion	NOUN
cet-2331	111	29	processes	process	NOUN
cet-2331	111	30	determined	determine	VERB
cet-2331	111	31	by	by	ADP
cet-2331	111	32	atmospheric	atmospheric	ADJ
cet-2331	111	33	pressure	pressure	NOUN
cet-2331	111	34	photoionization	photoionization	NOUN
cet-2331	111	35	(	(	PUNCT
cet-2331	111	36	appi	appi	NOUN
cet-2331	111	37	)	)	PUNCT
cet-2331	111	38	fourier	fourier	NOUN
cet-2331	111	39	transform	transform	VERB
cet-2331	111	40	ion	ion	NOUN
cet-2331	111	41	cyclotron	cyclotron	NOUN
cet-2331	111	42	resonance	resonance	NOUN
cet-2331	111	43	(	(	PUNCT
cet-2331	111	44	ft	ft	PROPN
cet-2331	111	45	-	-	PUNCT
cet-2331	111	46	icr	icr	NOUN
cet-2331	111	47	)	)	PUNCT
cet-2331	111	48	mass	mass	NOUN
cet-2331	111	49	spectrometry	spectrometry	NOUN
cet-2331	111	50	,	,	PUNCT
cet-2331	111	51	energy	energy	NOUN
cet-2331	111	52	fuels	fuel	NOUN
cet-2331	111	53	,	,	PUNCT
cet-2331	111	54	24	24	NUM
cet-2331	111	55	,	,	PUNCT
cet-2331	111	56	2257	2257	NUM
cet-2331	111	57	-	-	SYM
cet-2331	111	58	2265	2265	NUM
cet-2331	111	59	.	.	PUNCT
cet-2331	112	1	wang	wang	PROPN
cet-2331	112	2	l.	l.	PROPN
cet-2331	112	3	,	,	PUNCT
cet-2331	112	4	he	he	PRON
cet-2331	112	5	c.	c.	PROPN
cet-2331	112	6	,	,	PUNCT
cet-2331	112	7	zhang	zhang	PROPN
cet-2331	112	8	y.	y.	PROPN
cet-2331	112	9	,	,	PUNCT
cet-2331	112	10	zhao	zhao	PROPN
cet-2331	112	11	s.	s.	PROPN
cet-2331	112	12	,	,	PUNCT
cet-2331	112	13	chung	chung	PROPN
cet-2331	112	14	k.	k.	PROPN
cet-2331	112	15	,	,	PUNCT
cet-2331	112	16	xu	xu	PROPN
cet-2331	112	17	chunming	chunming	PROPN
cet-2331	112	18	.	.	PROPN
cet-2331	112	19	,	,	PUNCT
cet-2331	112	20	hsu	hsu	PROPN
cet-2331	112	21	c.	c.	PROPN
cet-2331	112	22	,	,	PUNCT
cet-2331	112	23	shi	shi	PROPN
cet-2331	112	24	quan	quan	PROPN
cet-2331	112	25	.	.	PROPN
cet-2331	112	26	,	,	PUNCT
cet-2331	112	27	2013	2013	NUM
cet-2331	112	28	,	,	PUNCT
cet-2331	112	29	characterization	characterization	NOUN
cet-2331	112	30	of	of	ADP
cet-2331	112	31	acid	acid	NOUN
cet-2331	112	32	compounds	compound	NOUN
cet-2331	112	33	in	in	ADP
cet-2331	112	34	heavy	heavy	ADJ
cet-2331	112	35	petroleum	petroleum	NOUN
cet-2331	112	36	resid	resid	NOUN
cet-2331	112	37	by	by	ADP
cet-2331	112	38	fractionation	fractionation	NOUN
cet-2331	112	39	and	and	CCONJ
cet-2331	112	40	negative	negative	ADJ
cet-2331	112	41	-	-	PUNCT
cet-2331	112	42	ion	ion	NOUN
cet-2331	112	43	electrospray	electrospray	NOUN
cet-2331	112	44	ionization	ionization	NOUN
cet-2331	112	45	fourier	fourier	NOUN
cet-2331	112	46	transform	transform	VERB
cet-2331	112	47	ion	ion	NOUN
cet-2331	112	48	cyclotron	cyclotron	NOUN
cet-2331	112	49	resonance	resonance	NOUN
cet-2331	112	50	mass	mass	NOUN
cet-2331	112	51	spectrometry	spectrometry	NOUN
cet-2331	112	52	analysis	analysis	NOUN
cet-2331	112	53	,	,	PUNCT
cet-2331	112	54	energy	energy	NOUN
cet-2331	112	55	fuels	fuel	NOUN
cet-2331	112	56	,	,	PUNCT
cet-2331	112	57	27	27	NUM
cet-2331	112	58	,	,	PUNCT
cet-2331	112	59	4555	4555	NUM
cet-2331	112	60	-	-	SYM
cet-2331	112	61	4563	4563	NUM
cet-2331	112	62	.	.	PUNCT
cet-2331	113	1	1608	1608	NUM