中文摘要：

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（pH4．0），-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＋0．4V下，经富集240s后，测得木犀草素氧化峰电流L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．

英文摘要：

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.