ANALYSIS OF ARSENIC(V) BY CATHODIC STRIPPING VOLTAMMETRY

被引：65
|
作者：
GREULACH, U
HENZE, G
机构：
[1] UNIV KAISERSLAUTERN,FACHBEREICH CHEM,W-6750 KAISERSLAUTERN,GERMANY
[2] UNIV TRIER,ANORGAN & ANALYT CHEM ABT,D-54228 TRIER,GERMANY
来源：
ANALYTICA CHIMICA ACTA | 1995年 / 306卷 / 2-3期
关键词：
STRIPPING VOLTAMMETRY; ARSENIC; ENVIRONMENTAL SAMPLES; WATERS;
D O I：
10.1016/0003-2670(94)00681-B
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A novel electrochemical stripping approach is presented for the trace measurement of arsenate. It is based on the reduction of As(V) in a mannitol and perchlorate containing solution, the coprecipitation with copper and the voltammetric determination by further reduction to AsH3 at the hanging mercury drop electrode. For an accumulation period of 60 s, the detection limit has been found to be 4.4 mu g/l; the determination limit was calculated to be 11 mu g/l. The method has been applied to the analysis of arsenic in a standard stream sediment and in water samples.
引用
收藏
页码：217 / 223
页数：7
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