高等学校化学学报

高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (5): 713.

• 论文 • 上一篇    下一篇

毛细管电泳微机化扫描伏安检测器

王立世, 杨晓云, 莫金垣, 邹小勇   

  1. 中山大学化学系, 广州 510275
  • 出版日期:1999-05-24 发布日期:1999-05-24
  • 通讯作者: 莫金垣
  • 作者简介:王立世,男,31岁,博士.
  • 基金资助:

    国家自然科学基金(批准号:29675033)资助课题

Computerized Scanning Voltammetric Detector for Capillary Electrophoresis

WANG Li-Shi, YANG Xiao-Yun, MO Jin-Yuan, ZOU Xiao-Yong   

  1. Department of Chemistry, Zhongshan University, Guangzhou, 510275
  • Online:1999-05-24 Published:1999-05-24

PDF (PC)

被引次数

9

摘要： 描述了一种毛细管电泳微机化扫描伏安检测器,用微机通过D/A和A/D转换器控制扫描电压和采集电流信号,用12bit的D/A转换器和12bit的A/D转换器通过伏安仪分别与Ag/AgCl参比电极和工作电极相连,进行电位控制和数据采集.讨论了扫描电位的产生和数据采集的控制方法,并用本系统分离测定了对苯二酚和儿茶酚,结果令人满意.

关键词: 毛细管电泳, 微机控制, 扫描伏安检测器

Abstract: This work describes the development of a scanning voltammetric detector for capillary electrophoresis. The scanning electrode potential waveform generation and the current signal acquisition are controlled by a microcomputer interfaced with a home-made card which is equipped with 12 bit digital-analog converter(D/A) and a 12 bit analog-digital converter (A/D). The D/A is connected to a Ag/AgCl reference electrode and used to control the cell potential via a voltammeter, and the A/D is connected to the working electrode for data acquisition. The methods of potential control and signal acquisition are discussed. An example of separating mixture of p-diphenol and pyrocatechol is demonstrated. The results obtained are satisfactory.

Key words: Capillary electrophoresis, Microcomputer controlling, Scanning voltammetric detector

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