Application of an optimization procedure in adsorptive stripping voltammetry for the determination of trace contaminant metals in aqueous medium

被引：28

作者：

Paolicchi, I ^{[1
]}

Renedo, OD ^{[1
]}

Lomillo, MAA ^{[1
]}

Martínez, MJA ^{[1
]}

机构：

[1] Univ Burgos, Fac Ciencias, Dpto Quim, Area Quim Analit, E-09001 Burgos, Spain

来源：

ANALYTICA CHIMICA ACTA | 2004年 / 511卷 / 02期

关键词：

indium; adsorptive stripping voltammetry; APDC; optimization; experimental design;

D O I：

10.1016/j.aca.2004.02.009

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A procedure for the determination of the contaminant metal ln(III) by differential pulse adsorptive stripping voltammetry (DPAdSV) using ammonium pyrrolidine dithiocarbamate (APDC) as a complexing agent, has been optimized. The selection of the experimental conditions was made using experimental design methodology by means of a robust regression method which allows the elimination of anomalous points. The detection limit obtained was 1.3 x 10(-9) mol dm(-3). Possible interferences from concomitant metal ions were evaluated. Among all the metals analyzed. only Cd(II) was found to create an interference. This fact made impossible to carry out the determination of ln(III) in the presence of Cd(II) using a univariate calibration. This problem was solved using multivariate regression techniques such as partial least squares (PLS). The procedure was successfully applied to the determination of indium in different aqueous samples. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：223 / 229

页数：7

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