Determination of Trace of Cobalt in Complex Matrices by Adsorptive Stripping Voltammetry at a Lead Film Electrode

被引：11

作者：

Tyszczuk, Katarzyna ^{[1
]}

Rutyna, Iwona ^{[1
]}

Korolczuk, Mieczyslaw ^{[1
]}

机构：

[1] Marie Curie Sklodowska Univ, Fac Chem, PL-20031 Lublin, Poland

来源：

ELECTROANALYSIS | 2009年 / 21卷 / 06期

关键词：

Cobalt; Trace determination; Complex matrix; Voltammetry; Lead film electrode; CETYLTRIMETHYLAMMONIUM BROMIDE; ZINC MATRIX; NICKEL; NITRITE; DIMETHYLGLYOXIME; SAMPLES; SYSTEM; WAVE;

D O I：

10.1002/elan.200804463

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An adsorptive stripping voltammetric procedure for the determination of cobalt in a complex matrices at an in situ plated lead film electrode was described. The procedure exploits the enhancement effect of a cobalt peak observed in the system Co(II)-nioxime-piperazine-1,4-bis(2-ethanesulfonic acid)-cetyltrimethylammonium bromide. The calibration graph was linear from 5 x 10(-10) to 2 x 10(-8) mol L-1 and from 1 x 10(-10) to 1 x 10(-9) mol L-1 for the accumulation times 120 and 600 s, respectively. The detection limit (based on the 3 sigma criterion) for Co(II) following accumulation time of 600 s was 1.1 x 10(-11) mol L-1. The interference of high concentrations of foreign ions and surfactants was studied.

引用

页码：779 / 782

页数：4

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