Quantitative determination of zinc in milkvetch by anodic stripping voltammetry with bismuth film electrodes
Quantitative determination of zinc in milkvetch by anodic stripping voltammetry with bismuth film electrodes
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DOI：
10.1016/j.talanta.2004.08.060
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发表时间：
2005-02-28
期刊：
影响因子：
6.1
通讯作者：
Jaffrezic-Renault, N
中科院分区：
文献类型：
--
作者：
Guo, ZY;Feng, F;Jaffrezic-Renault, N
铋膜电极（BiFE）是一种很有吸引力的替代普通汞膜电极（NIFE）的阳极溶出伏安法测量。采用玻碳电极原位沉积铋膜法测定中药黄芪中锌的含量。对影响响应的变量进行了评估和优化。实验结果表明，该方法具有良好的线性（0.5 × 10（-6）mol L-1 ~ 3 × 10（-6）mol L-1）和精密度（R.S.D. = 3.58%）和低检测限（9.6 × 10（-）9 mol L-1，120 s阳极）。铋膜电极的阳极溶出性能使其非常适合于黄芪中微量营养元素锌的测定，并对汞电极的使用提出了可能的限制。(C)2004 Elsevier B. V.保留所有权利。
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.