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环境化学  2015 

方波阳极溶出伏安法同时测定煤矸石和粉煤灰中的锌、镉、铅

Keywords: 方波阳极溶出伏安法,,,,煤矸石,粉煤灰

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Abstract:

采用铋膜修饰玻碳电极,建立了用方波阳极溶出伏安法同时测定煤矸石和粉煤灰中锌、镉、铅元素的分析方法.优化了扫描方式、电解液及pH值、铋离子浓度、富集电位、富集时间等实验参数.在最佳实验条件下,锌、镉、铅分别在1—90μg·L-1、20—120μg·L-1和1—120μg·L-1浓度范围内呈现良好的线性关系,3种元素的检出限分别为0.04、0.03、0.02μg·L-1.该法用于实际煤矸石、粉煤灰样品中锌、镉、铅的测定,准确度和精密度良好.

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