利用滴涂法和简单的恒电位还原法制备性能稳定的电化学还原氧化石墨烯和多壁碳纳米管复合修饰电极（rGO/MWCNTs-GCE），运用循环伏安法（CV）和差分脉冲伏安法（DPV）研究了卡马西平（CBZ）在所制备的修饰电极上的电化学行为，并对测定条件进行了优化。结果表明，CBZ在6.0×10^-6~2.0×10^-4 mol/L浓度范围内，氧化峰电流值与浓度呈明显的线性关系，检出限为1.0×10^-6 mol/L。优化实验条件后的电极呈现出良好的灵敏度、稳定性和重现性，可用于卡马西平的快速检测。

A stable electro-reduced graphene oxide and multi-walled carbon nanotube composite modified electrode (rGO/MWCNTs-GCE) is prepared jointly by drip coating method and simple constant potential reduction method.Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) are used to study the electrochemical response of carbamazepine (CBZ) on rGO/MWCNTs-GCE,and the electrochemical detection conditions are optimized.The results show the oxidation peak current value of CBZ has an obvious linear relationship with the concentration in the range of 6.0×10^-6-2.0×10^-4 mol·L^-1,with a detection limit of 1.0×10^-6 mol·L^-1.Under optimal conditions,the composite modified electrode exhibits satisfactory stability,sensitivity and reproducibility,suitable for rapid detection of CBZ.

秦洪伟(1983-),男,博士,副教授,研究方向为纳米修饰电极的制备和环境污染物及其毒性电化学检测方法,qinhw037@163.com;尤国红(1981-),女,博士,副教授,研究方向为射频信号处理、阵列信号处理、非高斯信号处理,通讯联系人,youguohong825@hotmail.com。