应用化学 ›› 1991, Vol. 0 ›› Issue (3): 86-88.

• 研究简报 • 上一篇    下一篇

钴卟啉修饰碳纤维束葡萄糖酶微电极的研究

冯连玉, 车广礼, 董绍俊, 章咏华   

  1. 中国科学院长春应用化学研究所电分析化学开放实验室, 长春 130022
  • 收稿日期:1990-07-03 修回日期:1990-10-27 出版日期:1991-06-10 发布日期:1991-06-10
  • 基金资助:
    国家自然科学基金

GLUCOSE MICRO-ENZYME SENSOR BASED ON COBALT PORPHYRIN MODIFIED MICRODISK ARRAY CARBON FIBER ELECTRODE

Feng Lianyu, Che Guangli, Dong Shaojun, Zhang Yonghua   

  1. Laboratort of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022
  • Received:1990-07-03 Revised:1990-10-27 Published:1991-06-10 Online:1991-06-10

摘要: 生物电化学传感器的微型化研究是目前生物传感器研究中的一个很活跃的方向[1-3]。我们曾用钴卟啉修饰碳纤维柱电极,并以它为基底制成了葡萄糖微传感器[4]。为加强电极的抗折断能力,本文把约1千支碳纤维(φ9μm)做成碳纤维束盘微电极,在其表面修饰四苯基钴卟啉后,以其为基底制成了葡萄糖酶电极。将其用于流动注射分析,可以大大提高线性响应上限。

关键词: 生物传感器, 微电极, 修饰电极, 葡萄糖, 酶电极

Abstract: A cobalt tetraphenyl porphyrin modified microdisk array carbon fiber electrode has been prepared which showed a catalytic activity for oxygen reduction through linear voltam-metry.A glucose microenzyme electrode has been made based on the modified microelectrodeby immobilizing glucose oxidase.The upper detection limit of the microsensor was 2.4mmol/L.The response took 40s with satisfactory selectivity.The sensor held linear upto 13mmol/L in use for amperometric detection in the flow injection analysis.

Key words: biosensor, modified electrode, microelectrode, glucose, enzyme clectiode