Analysis of lead and zinc by mercury-free potentiometric stripping analysis

被引：0
|
作者：
Andersen, JET
机构：
来源：
ANALYTICAL LETTERS | 1997年 / 30卷 / 05期
关键词：
potentiometric stripping analysis; electrochemistry; trace-metal analysis;
D O I：
暂无
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A method is presented for trace-element analysis of lead and zinc by potentiometric stripping analysis (PSA) where both the glassy-carbon working electrode and the electrolyte are free of mercury. Analysis of zinc requires an activation of the glassy-carbon electrode. The activation is performed by preconcentrating zinc on glassy carbon at -1400 mV(SCE) in a mercury-free electrolyte containing 0.1 M HCl and 2 ppm Zn2+, followed by stripping at approx. -1050 mV. A linear relationship between stripping peak areas, recorded in the derivative mode, and concentration was found in the range 0-2000 ppb.
引用
收藏
页码：1001 / 1012
页数：12
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