DETERMINATION OF THALLIC AND THALLOUS IONS BY DIFFERENTIAL PULSE ANODIC-STRIPPING VOLTAMMETRY WITHOUT PRELIMINARY SEPARATION

被引：12
|
作者：
CISZEWSKI, A
机构：
[1] Institute of General Chemistry, Technical University of Poznań
来源：
TALANTA | 1990年 / 37卷 / 10期
关键词：
D O I：
10.1016/0039-9140(90)80139-7
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The simultaneous determination of thallic and thallous ions, without preliminary separation, has been achieved by differential pulse anodic stripping voltammetry at a hanging mercury drop electrode. The electrochemical activity of thallic ions in 0.2M EDTA at pH 4.5 ± 0.2 is inhibited by the addition of 0.01% poly(ethyleneglycol) of M.W. 20,000 (PEG 20,000). When the electrolyte also contains ascorbic acid at 0.01M concentration, the sum of thallic and thallous species can be determined. © 1990.
引用
收藏
页码：995 / 999
页数：5
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