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电化学(中英文) ›› 2007, Vol. 13 ›› Issue (4): 441-444. 

• 研究论文 • 上一篇    下一篇

木犀草素在玻碳电极上的直接电化学行为及其测定

刘爱林;张少波;吴潇霎;李丽萍;曹扬远;黄丽英;林新华;   

  1. 福建医科大学药学院药物分析系,福建医科大学药学院药物分析系,福建医科大学药学院药物分析系,福建医科大学药学院药物分析系,福建医科大学药学院药物分析系,福建医科大学药学院药物分析系,福建医科大学药学院药物分析系 福建福州350004,福建福州350004,福建福州350004,福建福州350004,福建福州350004,福建福州350004,福建福州350004
  • 收稿日期:2007-11-28 修回日期:2007-11-28 出版日期:2007-11-28 发布日期:2007-11-28

Electrochemical Behavior and Determination of Luteolin at a Glassy Carbon Electrode

LIU Ai-lin,ZHANG Shao-bo,WU Xiao-sha,LI Li-ping,CAO Yang-yuan,HUANG Li-ying,LIN Xin-hua   

  1. (Department of Pharmaceutical Analysis of the Fujian Meidical University,Fuzhou 350004,China
  • Received:2007-11-28 Revised:2007-11-28 Published:2007-11-28 Online:2007-11-28

摘要: 应用循环伏安法研究木犀草素于玻碳电极的电化学行为.在磷酸盐缓冲液中(pH 4.0),-0.2~+0.8V电位区间内,木犀草素于玻碳电极表面发生的电极反应是吸附控制的准可逆2电子转移过程,电子转移系数α=0.66;建立了检测木犀草素含量的差示脉冲伏安法(DPV).在富集电位+0.4 V下,经富集240 s后,测得木犀草素氧化峰电流Ip与其浓度在1.0×10-8~1.0×10-6mol.L-1范围内呈良好的线性关系,最低检出限为5.0×10-9mol.L-1.本法操作简单、快速、灵敏、准确,可为木犀草素药物质量的控制和检测提供一种简便的新方法.

关键词: 木犀草素, 玻碳电极, 黄酮类化合物, 伏安法

Abstract: The electrochemical behavior of luteolin was studied by voltammetry at a glassy carbon electrode in phosphate buffer solution.The results exhibited that the well-defined redox peak of luteolin is observed and the electrode process is adsorption-controlled.The charge transfer coefficient(α) was calculated as 0.66 in phosphate buffer solution(pH 4.0).The relationships between oxidation peak current and the concentration of luteolin are linear in the range of 1.0×10-8 ~ 5.0×10-6 mol·L-1 by differential pulse voltammetric method.The detection limit had been estimated as 1.0×10-8 molL-1.This method can be used for the determination of luteolin with satisfactory results.

Key words: luteolin, glassy carbon electrode, flavonoids, voltammetry

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