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铅、镉在铋修饰的厚膜碳浆电极上的阳极溶出伏安法检测

Jian-feng PING,Jie LIU, Jing YU,Jian WU

Chinese Journal of Sensors and Actuators（2008）

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Abstract
采用阳极溶出伏安法,在厚膜印刷的碳浆电极上同步镀铋测定痕量重金属元素铅和镉.文中研究了碳浆电极的预处理、溶液中铋离子浓度、预富集时间等因素对测量的影响.实验结果表明铅、镉在铋膜修饰的碳浆电极上可得到灵敏的阳极溶出峰,峰高和溶出电位与汞膜电极法相近.使用铋膜电极可避免使用汞电极带来的环境污染,同时采用厚膜印刷的碳浆电极可以大大降低检测成本,实现电极的单次使用.
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Key words
Bismuth,Cadmium,Lead,Stripping voltammetry,Thick-film carbon electrode
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