高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (8): 1428.

• 研究论文 • 上一篇    下一篇

重力驱动多相层流分离离子选择性电极检测集成化微流控芯片系统

陈宏, 方群, 殷学锋, 方肇伦   

  1. 浙江大学化学系微分析系统研究所, 杭州310028
  • 收稿日期:2003-09-02 出版日期:2004-08-24 发布日期:2004-08-24
  • 基金资助:

    国家自然科学基金重大项目(批准号:20299030);国家“八六三”计划项目(批准号:2002AA2Z2042);教育部科学技术研究重点项目(批准号:01093)资助

Integrated Microfluidic Chip System with Gravity Driven Multiphase Laminar Flow Separation and Ion Selective Electrode Detection

CHEN Hong, FANG Qun, YIN Xue-Feng, FANG Zhao-Lun   

  1. Institute of Microanalytical Systems, Department of Chemistry, Zhejiang University, Hangzhou 310028, China
  • Received:2003-09-02 Online:2004-08-24 Published:2004-08-24

摘要: 将微流控芯片多相层流分离技术与离子选择性电极检测技术联用,利用重力驱动的芯片多相层流分离系统,在线净化生物(血液)试样.同时,在芯片上加工微离子选择性电极进行待测物的在线检测,实现整体分析系统的芯片集成化,并将其用于血样中K+的测定.对5.5×10-3mol/L钾溶液5次平行测定的相对标准偏差(RSD)为5.6%,检出限为6.8×10-5mol/L,线性范围10-4~10-1mol/L.

关键词: 微流控芯片, 多相层流分离, 重力驱动, 离子选择电极

Abstract: A microfluidic chip based on multiphase laminar flow separation coupled to ion selective electrode detection was developed for the first time. The system was applied to the determination of potassium in serum,employing a multiphase laminar flow approach for separation of potassium ions from the serum matrix by diffusion into a buffer acceptor stream. Both sample and acceptor streams were driven by gravity,and potassium was determined by using an ion selective electrode integrated on the chip.

Key words: Microfluidic chip, Multiphase laminar flow separation, Gravity driving, Ion selective electrode

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