高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (9): 1214.

• 研究论文 • 上一篇    下一篇

钴原卟啉附修饰玻碳电极为基底的胆固醇酶电极

邓青, 董绍俊   

  1. 中国科学院长春应用化学研究所, 电分析化学开放研究实验室, 长春 130022
  • 收稿日期:1992-11-17 修回日期:1993-03-28 出版日期:1993-09-24 发布日期:1993-09-24
  • 通讯作者: 董绍俊
  • 作者简介:第一作者:女, 26岁, 博士研究生.
  • 基金资助:

    国家自然科学基金

Cholesterol Oxidase Sensor Based on Cobalt Protoporphyrin Modified Electrode

DENG Qing, DONG Shao-Jun   

  1. Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Academia Sinica, Changchun, 130022
  • Received:1992-11-17 Revised:1993-03-28 Online:1993-09-24 Published:1993-09-24

摘要: 本文利用钴原卟啉对H2O2氧化有很高催化活性的特点,以钴原卟啉修饰玻碳电极为基底,戊二醛交联法固定胆固醇氧化酶,以电聚合邻苯二胺膜抗干扰、抗毒化.得到了线性范围为0.1~2mmol/L,响应时间在30s以内,可连续使用150次的胆固醇酶电极.

关键词: 钴原卟啉, 修饰电极, 胆固醇氧化酶

Abstract: Anew amperometric sensor for free cholesterol has been fabricated based on a high electrocatalytic activity of cobalt protoporphyrin to the oxidation of H2O2.Alayer of cobalt pro-toporphyrin was absorbed on the glassy carbon electrode, the enzyme film consisting of bovine serum albumin and cholesterol oxidase was put on it, then a layer of poly(ο-phenylenediamine) film was electropolymerized out of the enzyme film to avoid interference and fouling.The linear range of concentration was 0.1 mmol/L -2 mmol/L.The response time was less than 30 s.The electrode was used for 150 times assays without loss of any enzymatic activity.

Key words: Cobalt protoporphyrin, Modified electrode, Cholesterol oxidase

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