利用浸渍法结合电化学还原法制备了纳米银石墨烯复合修饰电极（AgNPs/RGO/GCE），利用扫描电镜（SEM）观察了AgNPs/RGO/GCE的表面结构，采用循环伏安法（CV）表征了修饰电极的电化学性能，研究了盐酸环丙沙星（CIP）在AgNPs/RGO/GCE上的电化学行为，并在此基础上选用微分脉冲伏安法（DPV）探讨了AgNPs/RGO/GCE检测CIP的可行性。结果表明，AgNPs/RGO/GCE对CIP的电化学氧化具有非常明显的催化作用，在最优实验条件下，该方法灵敏度高、重复性和稳定性好，对模拟水样检测的回收率在96.34%~107.2%之间，RSD为2.015%~3.342%。

Ag nanoparticles graphene composite film modified electrode (AgNPs/RGO/GCE) is prepared by impregnation and electrochemical reduction methods.The morphology of AgNPs/RGO/GCE is observed by scanning electron microscopy (SEM) and its electrochemical properties are characterized by cyclic voltammetry (CV).The electrochemical behavior of ciprofloxacin hydrochloride (CIP) on AgNPs/RGO/GCE electrode is investigated,therefore the differential pulse voltammetry (DPV) is used to explore the feasibility of detecting CIP with AgNPs/RGO/GCE.The results indicate that AgNPs/RGO/GCE has a very obvious catalytic effect to the electrochemical oxidation of CIP,showing a high sensitivity,good repeatability and stability under the optimal experimental conditions.The recoveries by standard addition method of simulated water sample are in the range of 96.34%-107.2% and RSD is in the range of 2.015%-3.342%.

丛俏(1979-),女,博士,副教授,主要从事痕量金属的分析与检测方法的研究,congqiao@bhu.edu.cn