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Bismuth-film Glassy Carbon Electrode for the Determination of Lead by Differential Pulse Stripping Voltammetric

机译:铋 - 薄膜玻璃碳电极用于测定通过差分脉冲剥离伏安法测定铅

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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.
机译:本文介绍了一种新技术,采用铋胶片确定铅而不是汞膜。在实验中证明,在最佳测量情况下(当pH为4时,沉积时间为150s,沉积电位为0.8。),铅浓度和汽提峰电流在测量范围内显示出良好的线性关系10至110ug / L,即i = 0.1002c + 0.0539。实验分析表明,茶样品中铅的浓度为1.667μg/ g,回收率为91.2%〜101.8%。事实证明,铋薄膜电极的方法用于测量具有方便,速度,灵敏度和精度等优点的引线。

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