延胡索乙素在碳纳米管修饰玻碳电极上的电化学检测  

Electrochemical determination of Tetrahydropalmatine at a carbon nanotube modified glassy carbon electrode

作　　者：陈宪[1] 刘婷[1] 许小平[1] 陈国南[1] 

机构地区：[1]福州大学化学化工学院,福建福州350108

出　　处：《福建分析测试》2012年第6期21-24,共4页Fujian Analysis & Testing

基　　金：国家自然科学基金资助项目(41076059);教育部博士点基金资助项目(20103514110002)

摘　　要：本文建立了延胡索乙素在碳纳米管修饰玻碳(CNT/GC)电极上的电化学检测方法。在pH6.20的Michaelis.缓冲液中,用方波伏安法研究了延胡索乙素在CNT/GC电极上的电化学行为。延胡索乙素在+0.90v(vs.Ag/AgCl)左右产生一个灵敏的阳极氧化峰,峰电流与延胡索乙素的浓度在8.0×10-7～5.0×10-5mol/L范围内呈良好线性关系,最低检测限达3.0×10-7mol/L。该法简单、快速、灵敏,可应用于生药材和中成药中延胡索乙素的测定。The electrochemical oxidation of tetrahydropalmatine （THP） at a carbon nanotube modified glassy carbon electrode （CNT/GCE） has been investigated. In the Michaelis. buffer solution （pH6.20）, one well-defined oxidation peak of THP was obtained, and the peak potential was 0.90V （vs. Ag/AgCl ）. The peak current was proportional to the concentration of THP over the range of 8.0 ×10^-7-5.0 ×10^-5 mol/L by Square Wave Voltammetry. The detection limit was 3.0×10^-7 mol/L. Furthermore, a quantitative analysis of THP in two real samples was established based on the electrochemistry behavior of THP. The method was applied to the determination of THP in Chinese herb and medicine with satisfactory results.

关 键 词：延胡索乙素 碳纳米管修饰玻碳电极 方波伏安法 

分 类 号：O657.1[理学—分析化学]