Polarographic studies on selenite ions in aqueous hypophosphorous acid solutions

被引：2
作者：
ElShatoury, SA
机构：
[1] Department of Chemistry, Faculty of Science, Assiut University
来源：
COLLECTION OF CZECHOSLOVAK CHEMICAL COMMUNICATIONS | 1996年 / 61卷 / 07期
关键词：
polarography; selenite; hypophosphorous acid;
D O I：
10.1135/cccc19960992
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The polarographic behaviour and determination of Se(IV) in hypophosphorous acid solutions of concentrations varying from 0.05 mol l(-1) to 4.0 mol l(-1) at 25 +/- 0.1 degrees C were investigated. It was shown that the reduction of 5.10(-4) mol l(-1) Se(IV) at the DME takes place in two waves independent on the acid concentration. The reduction waves correspond to the transfer of 6 electrons. A mechanism of the reduction at the DME has been suggested. A method for the analytical determination of Se(TV) species in 0.1 mol l(-1) and 0.05 mol l(-1) hypophosphorous acid in absence and in presence of 3.10(6) mol l(-1) Cd(II) and Zn(II) was developed using a differential pulse technique.
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收藏
页码：992 / 998
页数：7
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