铋膜丝网印刷电极现场快速测定工业废水中Pb^(2+)、Cd^(2+)  

Bismuth-coated screen printed electrode for on-site detection Pb^(2+) and Cd^(2+) in industrial wastewater

作　　者：吴志珊[1] 宋伟[2] 韩倩 杨丽莉 许丹科[2] 钟文英[1] 

机构地区：[1]中国药科大学基础部分析化学教研室,南京210009 [2]南京大学生命分析化学国家重点实验室,南京210093 [3]南京环境监测中心站,南京210013

出　　处：《环境化学》2013年第4期692-697,共6页Environmental Chemistry

基　　金：江苏省环境监测科研基金项目(1116)资助

摘　　要：采用丝网印刷电极,通过同位镀铋膜阳极溶出伏安法对工业废水中重金属Pb2+和Cd2+进行了快速测定,考察并优化了镀铋膜及测定金属离子的实验条件.实验结果表明,Pb2+和Cd2+在铋膜电极上可得到灵敏的溶出峰,在优化的实验条件下Pb2+和Cd2+在50—500μg.L-1范围内呈现良好的线性关系,相关系数分别为0.9947、0.9969,检测限分别为4.45μg.L-1和2.98μg.L-1.测定了工业废水中的Pb2+、Cd2+,结果与ICP-MS方法一致.In this paper, in-situ plating bismuth film coupled to screen-printed electrode were used to determine heavy metals Pb2＋ and Cd2＋ in industrial water by anonic stripping voltammetry. The conditions which influence the determinnation of heavy metals were investigated. The experimental results show sensitive stripping peaks of Pb2＋ and Cd2＋. Under the optimized conditions, Pb2＋ and Cd2＋ presents a good linear relationship from 50 to 500 μg.L^-1 range, the correlation coefficients were 0.9947 and 0.9969, the detection limits were 4.45 μg.L^-1 and 2.98 μg.L^-1. This method used to determine trace Pb2＋ and Cd2＋ in industrial wastewater was good agreement with ICP-MS.

关 键 词：丝网印刷电极 铋膜 阳极溶出伏安法 重金属离子 工业废水 

分 类 号：X832[环境科学与工程—环境工程] O657.1[理学—分析化学]