预镀铋膜阳极溶出伏安法测定废水中微量铅和镉  

Determination of Trace Lead and Cadmium in Waste Water by Anodic Stripping Voltammetry using Pre-plated Bismuth Film Electrode

作　　者：常艳兵[1] 何琼[2] 

机构地区：[1]曲靖师范学院继续教育学院,云南曲靖655000 [2]曲靖师范学院化学化工学院,云南曲靖655000

出　　处：《分析科学学报》2010年第4期423-426,共4页Journal of Analytical Science

基　　金：云南省教育厅科学研究基金(No.06Z048A);曲靖师范学院科技创新团队项目资助

摘　　要：本文采用预镀铋膜法修饰玻碳电极,并用该电极对废水中微量铅和镉同时进行了阳极溶出伏安法测定,研究了预镀铋膜测定铅和镉的条件。实验结果表明:铅和镉在铋膜电极上可得到灵敏的电位溶出峰,峰高和溶出电位与汞膜电极法相近,使用预镀铋膜电极可避免使用汞电极带来的环境污染。A modified glassy carbon electrode （GCE） was prepared by ex-situ plating bismuth film on the electrode. The electrode was utilized in simulataneous determination of Pb2＋ and Cd2＋ with anodic stripping voltammetry. The detection conditions were optimized. Results showed that sensitive potential stripping peak was obtained for Pb2＋ and Cd2＋ with the bismuth film electrode. The peak intensity and stripping potential obtained were similar to those gained with a mercury electrode. The results suggested that this bismuth film electrode could be helpful in avoiding the environmental pollution caused by the use of mercury electrode.

关 键 词：预镀铋膜 阳极溶出伏安法 铅 镉 

分 类 号：O657.14[理学—分析化学]