[An electrochemical cell for end-column amperometric detection in capillary electrophoresis].
With end-column electrochemical detection in capillary electrophoresis(CE), precise positioning and stabilization of the working electrode are very important. In this paper, an electrochemical cell designed for end-colunm wall-jet amperometric detection in capillary zone electrophoresis is reported. In this cell, a curved surface was formed because of the surface tension and used as the amplifier. With this cell, alignment of the working electrode with the capillary outlet could be achieved precisely and easily without the help of a microscope and a micropositioner. Being compared with electrochemical cell of other groups, this cell is simple and can be used more conveniently. Application of this electrochemical cell for electrophoretic separation of phenols is demonstrated. High resolution and low detection limits were obtained with this assembly.
Wu
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X
Department of Chemistry, Fudan University, Shanghai, 200433.
Fang
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A
Zhang
X
X