石墨烯/分子印迹聚合物的电化学传感器及其用于莱克多巴胺的检测  

Graphene/Molecularly Imprinted Polymers Modified Electrochemical Sensor and Its Application in the Determination of Ractopamine

作　　者：唐婷[1] 陈莹莹[1] 潘样丹 徐启翔 肖平秀 叶冰青 曾延波[1] 李蕾[1] 

机构地区：[1]嘉兴学院生物与化学工程学院,浙江嘉兴314001

出　　处：《山东化工》2015年第16期83-85,共3页Shandong Chemical Industry

基　　金：浙江省大学生科技创新活动计划暨新苗人才计划项目(2014R417007)

摘　　要：在石墨烯修饰的玻碳电极表面滴涂莱克多巴胺分子印迹聚合物,制备了莱克多巴胺分子印迹电化学传感器。优化了石墨烯浓度、分子印迹聚合物浓度、富集时间、pH值等对传感器的影响,优化后得到的最佳实验条件为：石墨烯浓度为0.3 mg/m L,莱克多巴胺分子印迹聚合物浓度为3.0 mg/m L,富集时间为5 min,磷酸盐缓冲溶液的pH值为7.0;在最佳条件下,石墨烯/分子印迹聚合物的电化学传感器对莱克多巴胺进行检测,其峰电流响应与莱克多巴胺的浓度在0.5～90.0μmol/L范围内具有良好的线性关系,检测限为0.16μmol/L（S/N=3）。石墨烯/分子印迹聚合物的电化学传感器成功应用于猪肉样品中莱克多巴胺含量的测定。In this paper, ractopamine molecularly imprinted polymers （MIPs） were coated onto graphene modified glassy carbon electrode to prepare the imprinted sensor. Influence parameters including concentration of graphene and molecularly imprinted polymers, adsorption time, and pH have been optimized for the sensor. When concentration of graphene was 0. 3 mg/mL, concentration of ractopamine blips was 3.0 mg/mL, adsorption time was 5 rain, and pH was 7.0, the sensor reached the optimal experiment performance. Under the optimum conditions, graphene/ractopamine MIPs sensor was used for the determination of ractopamine. The peak current was linear to the ractopamine concentration in the range of 0.5 - 90. 0 tool/L, with a detection limit of 0. 16 mol/L （S/N = 3 ）. The prepared sensor was successfully applied to the determination of ractopamine in pork samples.

关 键 词：石墨烯 分子印迹聚合物 电化学传感器 莱克多巴胺 

分 类 号：O641.3[理学—物理化学] S816.7[理学—化学]