差分脉冲溶出伏安法测定铅的铋膜玻碳电极

Q1 Social Sciences HumanMachine Communication Journal Pub Date : 2010-04-24 DOI:10.1109/MVHI.2010.140
H. Men, Shanshan Zhang, Ping Zhang, Shanrang Yang, Zhiming Xu
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引用次数: 0

摘要

本文提出了用铋膜代替汞膜测定铅的新技术。实验证明,在最佳测量条件下(pH = 4,沉积时间为150s,沉积电位为0.8),铅浓度与溶出峰电流在10 ~ 110ug/L的测量范围内呈良好的线性关系,即I=0.1002C+0.0539。实验分析表明,茶叶样品中铅的浓度为1.667μg / g,回收率为91.2% ~ 101.8%。实践证明,采用铋膜电极法测量铅具有方便、快速、灵敏、准确等优点。
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Bismuth-film Glassy Carbon Electrode for the Determination of Lead by Differential Pulse Stripping Voltammetric
This paper presents a new technology using Bismuth-film to determinate lead instead of mercury film. It is proved in the experiment that, in the optimum measuring situation (when the pH is 4, deposition time is 150s, and the deposition potential is 0.8.), the lead concentration and stripping peak current shows a good linear relationship in the measuring range of 10 to 110ug/L, which is I=0.1002C+0.0539. The experimental analysis shows that the concentration of lead in tea samples is 1.667μg / g, and the recovery rate is 91.2% ~ 101.8%. It is proved that the method of bismuth film electrode is used to measure lead with advantages of convenience, speediness, sensitivity and accuracy, etc.
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来源期刊
CiteScore
10.00
自引率
0.00%
发文量
10
审稿时长
8 weeks
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