Citation: Qi Shan LIN, Ting Ting ZHANG, Guo Quan LIU. ON-COLUMN ELECTRO-PUMPING SYSTEM FOR SAMPLE INTRODUCTION IN CAPILLARY ELECTROPHORESIS[J]. Chinese Chemical Letters, ;1996, 7(1): 35-38. shu

ON-COLUMN ELECTRO-PUMPING SYSTEM FOR SAMPLE INTRODUCTION IN CAPILLARY ELECTROPHORESIS

Institute of Chemistry Chinese Academy of Sciences, Beijing, 100080

Received Date: 14 March 1995

Fund Project: We are grateful to Prof. An ZHU for critically reviewing this manuscript.

The design of a simple and reproducible sample injection system for capillary electrophoresis is described in the present work.In this system,two capillaries are coupled together with a section of controlled porous glass (CPG). When the oncolumn CPG section is immersed in a buffer reservoir along with an electrode to allow a potential to be applied across just one capillary,the Strang electroosmotie flow generated in this capillary serves to pull the analyte into the other capillary.With this sample introduction system,the RSD for peak height over 20 runs was ca.2.8%.
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