高等学校化学学报

高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (3): 236.

• 研究论文 • 上一篇    下一篇

痕量铅在Nafion修饰电极上的离子交换及其测定的研究

金利通, 刘斌, 方禹之   

  1. 华东师范大学化学系
  • 收稿日期:1988-07-19 出版日期:1990-03-24 发布日期:1990-03-24
  • 通讯作者: 金利通

Study on Trace Lead Ion-Exchange on Nation-Modified Electrode and Its Determination

Jin Litong, Liu Bin, Fang Yuzhi   

  1. Department of Chemistry, Baal China Normal University, Shanghai
  • Received:1988-07-19 Online:1990-03-24 Published:1990-03-24

PDF (PC)

被引次数

9

摘要： 本文利用Nafion膜与试液中的痕量铅进行离子交換的特性,建立了Nafion修饰电极的富集及测定铅的方法,并探讨了Nafion修饰电极作用机理。本方法测定Pb2+的线性范围为13～133ng/mL,变异系数为3.5％,检测下限为6ng/mL。

关键词: Nafion修饰电极, 铅的离子交换富集, 铅的测定, 阳极溶出伏安分析

Abstract: Using the properties of Nation membrane making ion-exchagne with trace Pb( Ⅲ) in solution, this paper describes the method of Nafion modified electrodes concentrated and determination of Pb( Ⅱ), and discusses its reaction mechanism. There is a linear rlationship between the concentration and peak height in the range of 13-133 ng/mLfor Pb( Ⅱ ), the variation coefficient for the method is 3. 5%, the detection limit of Pb( Ⅱ) is 6 ng/mL.

Key words: Nafion-modified electrode, Ion-exchange concentration of Pb ( Ⅱ ), Determination of Pb ( Ⅱ ), Anodic stripping voltammetry

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