id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
afs-71529	Mäkitie, Osmo	Chloroform extraction of trace nutrients as oxinates from soil extracts for spectrographic analysis	1960	6	.pdf	application/pdf	2194	152	57	CHLOROFORM EXTRACTION OF TRACE NUTRIENTS AS OXINATES FROM SOIL EXTRACTS FOR SPECTROGRAPHIC ANALYSIS Osmo Mäkitie Department of Soil Science, Agricultural Research Centre, Helsinki Received August 24, 1960 When easily soluble trace elements in soils are to be analysed in soil extracts, a preliminary separation is necessary, as well as concentration of these trace constit- uents. Extraction procedures with oxinates and organic solvents have, however, not been presented earlier, although solvent extrac- tion methods have been used in concentrating the trace elements from soil extracts, e.g., by dithizone extraction (14).	cache/afs-71529.pdf	txt/afs-71529.txt