Simultaneous determination of copper, lead, cadmium and zinc using differential pulse anodic stripping voltammetry in a flow system

被引：79

作者：

van Staden, JF ^{[1
]}

Matoetoe, MC ^{[1
]}

机构：

[1] Univ Pretoria, Dept Chem, ZA-0002 Pretoria, South Africa

来源：

ANALYTICA CHIMICA ACTA | 2000年 / 411卷 / 1-2期

关键词：

differential pulse anodic stripping voltammetry; glassy carbon electrode; flow injection analysis;

D O I：

10.1016/S0003-2670(00)00785-6

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The use of differential pulse anodic stripping voltammetry (DPASV) in a how system for the simultaneous determination of Cu, Cd, Fe, Pb and Zn was evaluated for applicability with a glassy carbon electrode. Simultaneous quantitative analysis for these elements is possible at low concentrations of Fe when using pyrophosphate as a supporting electrolyte (pH 4.0). An application of the proposed method is reported for the determination of these elements in water samples. The working ranges are 50-500 mu g l(-1) for Cu, Cd and Pb and 100-400 mu g l(-1) for Zn. The Fe content was negligible in these samples. Recovery studies and metallic interferences are reported. Detection limits of 39, 9.6, 16.6 and 14.7 mu g l(-1) for Cu, Cd, Pb and Zn, respectively, were obtained. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：201 / 207

页数：7

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