DETERMINATION OF SUB-MICROGRAM AMOUNTS OF VANADIUM IN BIOLOGICAL-MATERIALS BY EXTRACTION WITH N-CINNAMOYL-N-2,3-XYLYLHYDROXYLAMINE AND FLAMELESS ATOMIC-ABSORPTION SPECTROMETRY WITH AN ATOMIZER COATED WITH PYROLYTIC-GRAPHITE

被引:37
作者
ISHIZAKI, M
UENO, S
机构
[1] Ibaraki Hygienic Laboratory, Mito-shi, Ibaraki, 310, 4-1, Atago-cho
关键词
D O I
10.1016/0039-9140(79)80083-1
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A highly sensitive and simple method for determination of vanadium in plants and biological samples by solvent extraction and flameless atomic-absorption spectrometry with a carbon tube coated with pyrolytic graphite is described. After digestion of the sample, vanadium is separated by extraction of its N-cinnamoyl-N-2,3-xylylhydroxylamine complex into carbon tetrachloride from 6M hydrochloric acid medium. The method can be used to determine vanadium in plants and biological samples with average recovery of 94% and coefficient of variation of 14%. The sensitivity (1% absorption) is estimated to be 4 × 10-11 g. © 1979.
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页码:523 / 526
页数:4
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