IODOMETRIC MICROGRAM DETERMINATION OF CHROMIUM(III) AND (VI) BY USE OF CHEMICAL AMPLIFICATION REACTIONS

被引：11
|
作者：
ELWAKIL, AM
FARAG, AB
ELNAHAS, MS
机构：
[1] Department of Chemistry, Faculty of Science, Mansoura University, Mansoura
来源：
TALANTA | 1993年 / 40卷 / 06期
关键词：
D O I：
10.1016/0039-9140(93)80039-T
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A simple, rapid and sensitive method is described for the iodometric determination of microgram amounts of chromium(III), based on the oxidation of chromium(III) with periodate at pH 3.2, removal of the unreacted periodate by masking with molybdate and subsequent iodometric determination of the liberated iodate. Chromium(VI) can be determined by this method after prior reduction to chromium(III) with sodium sulphite. The method can also be used for the analysis of organochromium compounds.
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页码：841 / 844
页数：4
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