高等学校化学学报

高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (3): 368.

• 论文 • 上一篇    下一篇

3.5次微分循环示波计时电位法的研究

郑建斌, 傅业伟, 李圆, 高鸿   

  1. 西北大学电分析化学研究所, 西安, 710069
  • 收稿日期:1997-03-10 出版日期:1998-03-24 发布日期:1998-03-24
  • 通讯作者: 郑建斌,男,39岁,副教授,博士.
  • 作者简介:郑建斌,男,39岁,副教授,博士.
  • 基金资助:

    国家自然科学基金和陕西省自然科学基金资助课题.

Investigation of 3.5th Order Differential Cyclic Oscillochronopotentiometry

ZHENG Jian-Bin, FU Ye-Wei, LI Yuan, GAO Hong   

  1. Institute of Electroanalytical Chemistry, Northwest University, Xi'an, 710069
  • Received:1997-03-10 Online:1998-03-24 Published:1998-03-24

PDF (PC)

被引次数

41

摘要： 将半积分半微分技术应用于循环示波计时电位曲线的处理,可大大抑制充电电流的影响,提高示波测定的灵敏度和分辨率.据此,本文提出了3.5次微分循环示波计时电位法,研究了该方法的特点并将其用于HAc-NaoH-铜铁试剂(HCup)体系中铅示波特性的研究和微量铅的测定.

关键词: 半微分, 示波分析, 循环示波计时电位法

Abstract: The semiintegral and semidifferential technology was applied to process cyclic oscillochronopotentiometric signal in this paper.The instrument of 3.5th order differential cyclic oscillographic chronopotentiometry has been designed. The experimental results of determination for Cd, In, Rh and Pb in pH=10 HAc-NaAc-0.06% HCup solution show that the method has three advantages: (a) compared with the classifical oscillographic method based on dE/dt～E curve, the sensibility of the new method is increased about 5～10 times; (b) better resolving power; (c) the peak height caused by depolarizer on Y3.5～E curve is easy to be measured. As a result, 35th order differential cyclic oscillographic chronopotentiometry will become a really feasible analytical method.

Key words: Semidifferential, Oscillographic analysis, Cyclic oscillographic chronopotentiometry

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