高等学校化学学报 ›› 2006, Vol. 27 ›› Issue (4): 638.

• 研究快报 • 上一篇    下一篇

集成化液膜萃取-反萃取-毛细管电泳联用芯片

蔡增轩, 陈恒武   

  1. 浙江大学化学系微分析系统研究所,  杭州 310028
  • 收稿日期:2005-11-08 出版日期:2006-04-10 发布日期:2006-04-10
  • 通讯作者: 陈恒武(1947年出生),男, 博士, 教授, 博士生导师,从事微流控分析研究.E-mail: hwchen@zju.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 20299030)资助.

A Microfluoidic Chip-based Capillary Electrophoresis System with Integrated     Supported-liquid-membrane
Extraction-back-extraction Sample Pretreatment

CAI Zeng-Xuan, CHEN Heng-Wu*   

  1. Institute of Micro Analytical Systems, Department of Chemistry, Zhejiang University, Hangzhou 310028, China
  • Received:2005-11-08 Online:2006-04-10 Published:2006-04-10
  • Contact: CHEN heng-Wu,E-mail: hwchen@zju.edu.cn

摘要:

我们设计并制作了集成有支持液膜萃取-反萃取试样预处理的毛细管电泳(SLMEBE-CCE)微流控芯片. 分别以荧光素钠和丁基罗丹明B作为模型待测物和共存物, 在该芯片上进行了在线试样预处理与毛细管电泳联用的初步实验.

关键词: 微流控芯片; 毛细管电泳; 支持液膜萃取-反萃取; 预分离富集

Abstract:

This article presents the designing and fabrication of a microfluoidic chip with an integrated supported-liquid-membrane extraction-back-extraction and chip-based capillary electrophoresis system(SLMEBE-CCE).  A 3-dimensional channel network for the SLMEBE-CCE system was fabricated with a four-layer glass/PTFE-membrane hybrid structure.  With a gravity pump for sample and back-extraction solution delivery and  a multi-channel high-voltage supply for CCE separation,  the microchip with the coupled SLMEBE-CCE system was demonstrated by the pre-concentration, separation and detection of a mixed solution of fluorescein and butyl-rhodamine B.  Compared to chip-based CCE without SLMEBE, the developed SLMEBE-CCE system produced a 7-fold increase in the signal of the model analyte of fluorescein and a 4-fold decrease in the signal of the model co-existing compound of butyl-rhodamine B.

Key words: Microfluidic chip; Capillary electrophoresis; Supported liquid membrane extraction and back extraction; Pre-concentration; Sample cleaning-up

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