高等学校化学学报

高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (2): 224.

• 研究简报 • 上一篇    下一篇

儿茶酚胺类神经递质在锇配位聚合物和Nafion双层膜修饰碳基电极上的电催化氧化及其痕量测定

倪静安1, 鞠先1, 陈洪渊1, DónalLeech2   

  1. 1. 南京大学化学系, 南京 210093;
    2. 国立爱尔兰大学化学系, Galway, 爱尔兰
  • 收稿日期:1998-06-16 出版日期:1999-02-24 发布日期:1999-02-24
  • 通讯作者: 陈洪渊
  • 作者简介:倪静安,男,52岁,副教授,无锡轻工大学.
  • 基金资助:

    国家自然科学基金;教育部留学回国人员基金

Electrocatalytic Oxidation and Trace Determination of Catecholamine Neurotransmitters at Osmium Complex Polymer and Nafion Duallayer Membrane Carbonbase Electrode

NI Jing-An1, JU Huang-Xian1, CHEN Hong-Yuan1, Dnal Leech2   

  1. 1. Department of Chemistry, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093;
    2. Department of Chemistry, National University of Ireland, Galway, Ireland
  • Received:1998-06-16 Online:1999-02-24 Published:1999-02-24

PDF (PC)

被引次数

41

摘要： 多巴胺(DA)、肾上腺素(EP)和去甲肾上腺素(NE)等儿茶酚胺类神经递质是生物分子电化学研究的重要对象之一[1,2].它们在固体电极上的电子传递速率非常缓慢,且其本身或反应产物易在电极表面吸附,导致电极表面的钝化[3].

关键词: 双层膜修饰电极, [Os(bpy)2(PVP)10Cl]Cl, Nafion, 儿茶酚胺, 电催化氧化

Abstract: The fabrication and electrocatalytic characteristics of osmium complex polymer [Os(bpy)2(PVP)10Cl]Cl(OsP)orOsP2N afion duallayer membrane modified carbonbase(glassy carbon or graphite) electrodes were studied. The electrocatalytic behaviour of these modified electrodes to the oxidation of catecholamines(dopamine, epinephrine and norepinephrine) was investigated. The kinetic parameters of these electrocatalytic reactions were obtained. The OsP-Nafion duallayer membrane modified electrodes could eliminate efficiently the interference of ascorbic acid and could be used in quantitative determination of trace catecholamine levels. The modified elecrodes showed excellent sensibility, selectivity and stability.

Key words: Duallayer membrane modified electrodes, Cl, Nafion, Catecholamines, Eletrocatalytical oxidation

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