Quantitative determination of zinc in milkvetch by anodic stripping voltammetry with bismuth film electrodes

被引：50

作者：

Guo, ZY

Feng, F

Hou, YX ^{[1
]}

Jaffrezic-Renault, N

机构：

[1] Yanbei Normal Inst, Dept Chem, Datong 037000, Peoples R China

[2] Ecole Cent Lyon, CEGELY, UMR CNRS 5005, F-69134 Ecully, France

[3] Cent China Normal Univ, Coll Chem, Wuhan 430079, Peoples R China

来源：

TALANTA | 2005年 / 65卷 / 04期

关键词：

bismuth film electrodes; anodic stripping voltammetry; milkvetch; nutritive element;

D O I：

10.1016/j.talanta.2004.08.060

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Bismuth film electrode (BiFE) was shown to be an attractive alternative to common mercury film electrode (NIFE) for anodic stripping voltarnmetric measurements. In this study, bismuth film, that was in Situ deposited onto glassy carbon electrode, was used to detect zinc content of milkvetch, used in traditional Chinese medicine. Variables affecting the response have been evaluated and optimized. Experimental results showed a high response, with a good linearity (between 0.5 x 10(-6) mot L-1 and 3 x 10(-6) mol L-1) a good precision (R.S.D. = 3.58%) and a low detection limit (9.6 x 10(-)9 mol L-1 with a 120 s anodic). The anodic stripping performance makes the bismuth film electrode very desirable for measurements of trace nutritive element zinc in milkvetch and should impart possible restrictions on the use of mercury electrode. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：1052 / 1055

页数：4

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