高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (4): 567.

• 研究快报 • 上一篇    下一篇

新型芯片毛细管电泳电化学检测系统及其在神经递质分离检测中的应用

曾勇, 陈洪, 庞代文, 王宗礼, 程介克   

  1. 武汉大学分析科学中心, 武汉 430072
  • 收稿日期:2001-06-18 出版日期:2002-04-24 发布日期:2002-04-24
  • 通讯作者: 程介克(1930年出生),男,教授,博士生导师,从事芯片毛细管电泳、单细胞及单分子检测研究.
  • 基金资助:

    国家自然科学基金(批准号:29975020)资助.

A Novel Microchip-based Capillary Electrophoresis SystemWith Electrochemical Detection and ItsApplication to the Analysis of Neurotransmitters

ZENG Yong, CHEN Hong, PANG Dai-Wen, WANG Zhong-Li, CHENG Jie-Ke   

  1. Center of Analytical Science, Wuhan University, Wuhan 430072, China
  • Received:2001-06-18 Online:2002-04-24 Published:2002-04-24

关键词: 芯片毛细管电泳, 电化学检测, 微盘电极, 神经递质

Abstract: A novel microchip-based capillary electrophoresis system, based on the micro-electrode end-col-umn electrochemical detection, is described.Afixed guide tube was aligned accurately with the outlet ofthe separation channel to achieve the proper and reproducible alignment of microelectrode with the channel.Such a design permits easy and rapid replacement of different material microelectrodes or modified elec-trodes, obviating the disadvantages of permanent attachment of the detector.Using the homemade 7 μmcarbon-fiber microdisk electrodes and 30 μm Pt microdisk electrodes, a performance of separating neuro-transmitters, with good precision and submicromolar detection limits, demonstrated the versatility, sim-plicity, low-cost and high-sensitivity advantages of this new detector.

Key words: Microchip-based capillary electrophoresis, Electrochemical detection, Microdisk electrodes, Neurotransmitters

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