铅离子印迹膜电化学传感器的制备及应用  

Preparation and application of lead ion imprinted membrane electrochemical sensor

作　　者：姚程炜[1] 史洁 杨婧 黄宝美[2] YAO Cheng-wei;SHI Jie;YANG Jing;HUANG Bao-mei(Facility design and instrumentation institute,China aerodynamics research and development center,MianYang 621000,China;College of Chemistry&Chemical Engineering,MianYang Normal University,MianYang 621000,China)

机构地区：[1]中国空气动力研究与发展中心设备设计与测试技术研究所,四川绵阳621000 [2]绵阳师范学院化学与化学工程学院,四川绵阳621000

出　　处：《化学研究与应用》2021年第9期1687-1692,共6页Chemical Research and Application

基　　金：四川省科技厅项目(18YYJC1173)资助;绵阳师范学院校级项目(MYSY2018T007)资助。

摘　　要：采用离子印迹技术,以铅离子为模板,苯硫酚用于识别位点的形成,使铅离子与苯硫酚通过自组装的办法形成非共价键的相互作用,正十四烷基硫醇用于封闭未彻底组装的金电极的表面,制备了铅离子印迹电化学传感器。采用差分脉冲阳极溶出伏安法(DPASV)考察了支持电解质的种类、浓度、酸度、富集时间和脉冲周期对测定的影响。在优化的实验条件下,铅离子浓度在1.0×10^(-10)~1.0×10^(-5) mol·L^(-1)范围内与溶出电流呈良好的线性关系,相关系数为0.9973,检出限为1.0×10^(-11) mol·L^(-1)。该方法具有良好的重现性和稳定性,有望用于实际样品的检测。Lead ion imprinting electrochemical sensor was prepared by using lead ions as the template,thiophenol as recognition sites which allowed lead ions to form non-covalent bond interactions with thiophenol through self-assembly,while fourteen-alkyl-mercaptan was used to seal the surface of the gold electrode that was not completely assembled.Effects of types and pH values of supporting electrolyte,quiet time and impulse period were investigated byby the differential pulse anodic stripping voltammetry(DPASV).Under the optimum conditions,the peak currents of lead ion was linear over the concentraiton range of 1.0×10^(-10) to 1.0×10^(-5) mol·L^(-1) with the detection limit of 1.0×10^(-11)mol·L^(-1)(S/N=3)and correlation coeffecient is 0.9973.Therefore,the electrochemical sensor exhibited the advantages of high sensitivity,good reproducibility and stability,providing a potential platform for the determination of real samples.

关 键 词：离子印迹技术 铅离子检测 电化学传感器 

分 类 号：O657.1[理学—分析化学]