摘要
以纳米金修饰玻碳电极为基础电极,以双酚A为模板分子,以邻氨基苯硫酚为聚合单体,采用循环伏安法电聚合制备分子印迹聚合膜,利用循环伏安和交流阻抗法研究电极的电化学特性。结果表明,双酚A在修饰电极表面的反应是一个受吸附控制的等电子、质子转移的不可逆反应。采用差分脉冲伏安法检测双酚A,线性范围为5. 0×10^(-6)mol/L～4. 0×10^(-4)mol/L,检出限为2. 3×10^(-7)mol/L。将该电极用于自来水和牛奶样品的测定,结果均为未检出,加标回收率分别为93. 5%和95. 4%,3次测定结果的RSD分别为4. 0%和5. 7%。
A molecularly imprinted polymer film was prepared by cyclic voltammetry(CV)using gold nano-particles modified glassy carbon electrode as the substrate and bisphenol A(BPA)as the template molecule with o-aminothiophenol as the polymerization monomer.The electrochemical properties of the polymer film electrode were investigated by CV and electrochemical impedance spectroscopy.The results indicated that the oxidation of BPA on the electrode was a molecule adsorption controlled irreversible reaction in which electrons transferred were equal to protons.BPA was detected by differential pulse voltammetry,and the detection linearity range was from5.0×10^-6mol/L to4.0×10^-4mol/L with the detection limit of2.3×10^-7mol/L.The electrode was ap-plied to determine BPA in tap water and milk samples.The results indicated that BPA was not detected.The re-covery rates were93.5%and95.4%,and the RSD of3measurements were4.0%and5.7%,respectively.
作者
姚丹妮
王鑫宏
路莹
秦伟超
于洪斌
YAO Dan-ni;WANG Xin-hong;LU Ying;QIN Wei-chao;YU Hong-bin(School of Environment,Northeast Normal University,Science and Technology Innovation Center for Municipal Wastewater Treatment and Water Quality Protection of Jilin Province, Changchun,Jilin 130117,China;College of Resources and Environment,Jilin Agricultural University, Changchun, Jilin 130118, China)
出处
《环境监测管理与技术》
CSCD
2018年第6期44-46,68,共4页
The Administration and Technique of Environmental Monitoring
基金
国家自然科学基金资助项目(51378098)
吉林省科技厅优秀青年人才基金资助项目(20170520079JH)
中央高校基本科研业务费专项资金资助项目(2412017FZ025)
关键词
双酚A
纳米金
分子印迹
电聚合
差分脉冲伏安法
Bisphenol A
Gold nanoparticles
Molecular imprinting
Electrochemical polymerization
Differential pulse voltammetry
作者简介
姚丹妮(1992-),女,吉林四平人,在读研究生,研究方向为水污染电化学检测技术;通信作者:于洪斌 E-mail:yuhbl08@ nenu.edu.cn。
