id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
iajs-907	Jassim, A. H.; Qassim, B. B.; Mansoor, A. S.	Removal Interferences with Spectrophotometric Study for the Determination of Chromium, Vanadium and Their Application	2017	21	.pdf	application/pdf	7727	386	68	[Cr2O7 = ] which is noticed, thus, it should be converted from dichromate ions into chromate ions in basic media, then reduce chromate ion Cr (VI) to Cr (III) by ethanol with heating [29] and then the passing through the negative ion exchange column was allowed to take the interferences ions under study and to leave Cr (III) ions measured by spectrophotometry. Vanadium ions was an exceptional behavior, vanadyl ion carries a positive charge in the acidic media at (pH=1-6) of formula (VO 2+) and carries a negative charge in a strong alkaline media of formula VO (OH)3 - and (VO2) (OH)5 - at (pH=8-12), thus vanadium has an Amphoteric behavior	cache/iajs-907.pdf	txt/iajs-907.txt