基于电化学活化的传感器构建及其电化学性能  

Construction of Sensors Based on Electrochemical Activation and Its Electrochemical Performance

作　　者：梁丽娜 胡加枫 段朋虎 毛东鹏 朴云仙 LIANG Lina;HU Jiafeng;DUAN Penghu;MAO Dongpeng;PIAO Yunxian(Key Laboratory of Groundwater Resources and Environment of Ministry of Education,College of New Energy and Environment,Jilin University,Changchun 130021,China)

机构地区：[1]吉林大学地下水资源与环境教育部重点实验室,新能源与环境学院,长春130021

出　　处：《吉林大学学报（理学版）》2022年第1期182-188,共7页Journal of Jilin University:Science Edition

基　　金：国家自然科学基金(批准号:51809111).

摘　　要：为实现玻碳电极在电化学传感器领域的高灵敏度检测利用,在pH=5.0的磷酸盐缓冲溶液中,用恒电位法对玻碳电极进行电化学活化,考察pH值、富集电位及富集时间对Pb^(2+)检测效果的影响,并研究最佳实验条件下的活化电极对Pb^(2+)的检测性能.实验结果表明:该活化电极对Pb^(2+)的电化学检测响应电流具有增强效果,并具有检测时间短、灵敏度高的特点;检测线性范围为1×10^(-10)~5×10^(-6) mol/L,最低检出限和定量限分别为3×10^(-11) mol/L和1.0×10^(-10) mol/L.该活化电极在自来水Pb^(2+)的测定中具有较高回收率,可用于实际水质检测.In order to realize the high sensitivity detection of glassy carbon electrode in the field of electrochemical sensors,the glassy carbon electrode was electrochemically activated by constant potential method in phosphate buffer solution at pH=5.0.The effects of pH value,accumulation potential and accumulation time on the detection effect of Pb^(2+)were investigated,and the detection performance of activated electrode for Pb^(2+)was investigated under the optimal experimental conditions.The experimental results show that the activated electrode can enhance the response current of electrochemical detection of Pb^(2+),and has the characteristics of short detection time and high sensitivity.The detection linear range of Pb^(2+)is 1×10^(-10)—5×10^(-6) mol/L,the minimum detection limit is 3×10^(-11) mol/L,and the limit of quantification is 1.0×10^(-10) mol/L.The activated electrode has a high recovery in the determination of Pb^(2+)in tap water,and can be used in the actual water quality detection.

关 键 词：铅离子 电化学传感器 玻碳电极 差分脉冲伏安 

分 类 号：X502[环境科学与工程—环境工程] O661[理学—分析化学]