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。
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.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1999年第5期713-716,共4页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
关键词
毛细管电泳
控制
扫描伏安检测器
检测器
计算机
Capillary electrophoresis, Microcomputer controlling, Scanning voltammetric detector
