摘要
应用循环伏安法研究丹参酮ⅡA在玻碳电极上的电化学行为并建立差示脉冲伏安法测定含量．在pH4．0醋酸盐缓冲液中，差示脉冲伏安氧化峰电流与丹参酮ⅡA浓度（3．0×10^-7～2．0×10^-5mol·L^-1）呈良好的线性关系，检测限为2．0×10^-8mol·L^-1．玻碳电极可有效消除样品中其它组分对丹参酮ⅡA测定的干扰，已成功用于实际样品中丹参酮ⅡA含量的直接测定．该方法灵敏度高、检测范围宽，结果令人满意．
The electrochemical behavior of Tanshinone Ⅱ A was investigated by voltammetry at a glassy carbon electrode. And Differential Pulse Voltammetric method for determination of Tanshinone Ⅱ A was developed. In pH 4.0 acetate buffer solution, the relationship between oxidation peak current of Differential Pulse Voltammetric and the concentration of Tanshinone Ⅱ A was linear in the range of 3.0 ×10^-7-2.0×10^-5mol·L^-1. The detection limit had been estimated as 2.0 × 10^ -8 mol·L^-1 . The interference of other components in the preparation could be efficiently eliminated by the glassy carbon electrode. This method can be used for the determination of Tanshinone Ⅱ A in real sample with satisfactory results.
出处
《电化学》
CAS
CSCD
北大核心
2006年第4期449-452,共4页
Journal of Electrochemistry
基金
福建省教育厅重点项目(JA04194)资助
关键词
丹参酮ⅡA
玻碳电极
差示脉冲伏安法
Tanshinone Ⅱ A, Glassy carbon electrode, Differential pulse voltammetric method
