聚DL-缬氨酸修饰电极的制备及多巴胺的测定  

Preparation of poly(DL-valine) modified electrode and cyclic voltammetric determination of dopamine

作　　者：马心英[1] 赵艳霞[1] 李军[1] 李洪坤[1] 张国荣[1] 

机构地区：[1]山东师范大学化学与化工材料科学学院,山东济南250014

出　　处：《化学传感器》2004年第3期30-34,共5页Chemical Sensors

摘　　要：研究了聚DL-缬氨酸修饰玻碳电极的制备及其多巴胺在该电极上的伏安特性,建立了线性扫描溶出伏安法测定多巴胺的电化学分析新方法。在pH=4.0的磷酸盐缓冲溶液中,用该电极测定多巴胺的线性范围为:5.0×10^(-7)～8.0×10^(-5)mol/L,检测下限为5.0×10^(-8) mol/L,已用于药剂中多巴胺的测定。A new poly (DL-valing) modified electrode has been prepared, and the electrochemical behavior of dopamine at the poly (DL-valine) modified electrode was studied. In pH4. 0 phosphate buffer solutions, the linear range for the determination of dopamine is 5.0×10^(-7)～8.0×10^(-5) mol/L with the detection limit of 5.0×10^(-5) mol/L. The method was applied to the determination of dopamine in the drug with satisfactory results.

关 键 词：多巴胺 DL 测定 制备 缬氨酸 线性扫描 修饰电极 溶出伏安法 电化学分析 玻碳电极 

分 类 号：Q503[生物学—生物化学]