高等学校化学学报 ›› 1997, Vol. 18 ›› Issue (3): 376.

• 论文 • 上一篇    下一篇

聚碱性品红修饰电极的制备及应用

孙登明, 顾海鹰, 俞爱民, 陈洪渊   

  1. 南京大学化学系, 南京, 210093
  • 收稿日期:1996-03-28 出版日期:1997-03-24 发布日期:1997-03-24
  • 通讯作者: 陈洪渊.
  • 作者简介:孙登明, 男, 32岁, 副教授, 淮北煤炭师范学院访问学者.
  • 基金资助:

    国家自然科学基金

Preparation of Poly(fuchsin basic) Modified Electrode and Its Application

SUN Deng-Ming, GU Hai-Ying, YU Ai-Min, CHEN Hong-Yuan   

  1. Department of Chemistry, Nanjing University, Nanjing, 210093
  • Received:1996-03-28 Online:1997-03-24 Published:1997-03-24

摘要: 研究了碱性品红在玻碳电极上聚合的最佳实验条件及其聚合机理,发现该修饰电极对多巴胺具有良好的催化作用,能大大提高多巴胺在玻碳电极上的响应,在pH=7.0的磷酸盐缓冲溶液中,用该修饰电极测定多巴腔的线性范围为2×10-7~1×10-5mol/L,检测限为1×10-7mol/L,并且具有稳定性好、响应快、选择性高等特点.

关键词: 碱性品红, 聚合物修饰电极, 多巴胺

Abstract: In this paper, the polymerization process and mechanism of fuchsin basic at the glassy carbon electrode were investigated.The polymerization conditions such as applied potential, time and buffer solution were found to affect the polymerzation process.In addition,the modified electrode showed a catalytic ability to the voltammetric response of dopamine.This ability was applied to the determination of dopamine in solution.In pH=7.0 phosphate buffer solution, the linear range of dopamine was 2 × 10-7~1× 10-5 mol/Land the detection limit was 1 × 10-7 mol/L.This modified electrode had a good stability, high selectivity and fast response.

Key words: Fuchsin basic, Polymer modified electrode, Dopamine

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