基于微分脉冲溶出伏安法的铂修饰电极检测痕量铅和镉  

Determination of Trace Lead and Cadmium with Modified Platinum Electrode by Differential Pulse Stripping Voltammetry

作　　者：吴文展 李晓原[1] 黄家怿 郭佩佩 Wu Wenzhan;Li Xiaoyuan;Huang Jiayi;Guo Peipei(Hong Kong University of Science and Technology,Hong Kong;Guangzhou Joinken Network Technology Development Co.,Ltd.,Guangzhou)

机构地区：[1]香港科技大学,香港999077 [2]广州市健坤网络科技发展有限公司,广州510630

出　　处：《现代农业装备》2018年第3期66-71,共6页Modern Agricultural Equipment

基　　金：广州市科技计划项目(201704030023)

摘　　要：采用电化学沉积制备了汞膜和铋膜铂电极,应用制备的汞膜及铋膜铂电极对重金属污染物铅和镉进行微分脉冲溶出伏安法测定,探讨了富集时间、富集电位、修饰膜性质及本体电极尺寸等因素对重金属离子测定影响,确定铋膜修饰微电极更为适合应用于重金属离子快速在线监测。Mercury and bismuth film modified platinum electrodes were prepared by the ex-situ plating method.The heavy metal pollutants of cadmium and lead ions were determined by the differential pulse stripping voltammetry with the prepared mercury film and bismuth film modified platinum electrodes.The operational parameters of deposition time,deposition potential,the influence of the natural properties of the modified film and the size of the electrode were discussed respectively.As a result,the bismuth membrane microelectrode is more suitable for on-line monitoring heavy metal ions.

关 键 词：重金属离子 微分脉冲溶出伏安法 预镀铋膜 预镀汞膜 铂微电极 

分 类 号：O657.1[理学—分析化学] X830[理学—化学]