电位溶出法测定铅和镉  

Determination of Pb and Cd by stripping voltammetry

作　　者：郭小群[1] 

机构地区：[1]四川理工学院化学系,四川自贡643000

出　　处：《化学研究与应用》2007年第5期571-573,共3页Chemical Research and Application

基　　金：四川省教育厅重点专项(2005D007)资助;四川理工学院教改项目资助(J-0619)

摘　　要：A method for the determination of Pb and Cd with trace level by stripping voltammetry on the polyaniline electrode modified with Bi particles was investigated.Various kinds of experimental conditions for the determination of Pb and the deposition of Bi particles on the electrode were discussed.The results showed that a stripping potential peak with high sensitivity about Pb or Cd could be achieved,which was similar to that of the modified electrode.Furthermore,the electrode has shown a high stability and a work curve with a fairly good linearity.Meanwhile,a satisfing analytical result of the Pb concentration with trace level in tap water was achieved.A method for the determination of Pb and Cd with trace level by stripping voltammetry on the polyaniline electrode modified with Bi particles was investigated. Various kinds of experimental conditions for the determination of Pb and the deposition of Bi particles on the electrode were discussed. The results showed that a stripping potential peak with high sensitivity about Pb or Cd could be achieved, which was similar to that of the modified electrode. Furthermore, the electrode has shown a high stability and a work curve with a fairly good linearity. Meanwhile, a satisfing analytical result of the Pb concentration with trace level in tap water was achieved.

关 键 词：聚苯胺电极 电位溶出法 铋 铅 镉 

分 类 号：O646.54[理学—物理化学]