L-甲硫氨酸修饰电极检测对氯苯酚  

Electrochemical detection of p-chlorophenol by L-methionine modified electrode

作　　者：赵薇[1] 赵文鹏 刘妍[1] 连爽 秦洪伟[1] 尤国红[2] ZHAO Wei;ZHAO Wen-peng;LIU Yan;LIAN Shuang;QIN Hong-wei;YOU Guo-hong(College of Chemistry and Materials Engineering,Bohai University,Jinzhou 121013,China;College of Physical Science and Technology,Bohai University,Jinzhou 121013,China)

机构地区：[1]渤海大学化学与材料工程学院,辽宁锦州121013 [2]渤海大学物理科学与技术学院,辽宁锦州121013

出　　处：《现代化工》2021年第8期239-242,247,共5页Modern Chemical Industry

基　　金：国家自然科学基金项目(41602351);辽宁省自然科学基金指导计划项目(2019-ZD-0504)。

摘　　要：利用循环伏安法将L-甲硫氨酸修饰到裸玻碳电极表面,成功制备出聚L-甲硫氨酸修饰电极(PLM/GCE);分别采用循环伏安法和差分脉冲伏安法探讨修饰电极的电化学性能和对氯苯酚在该修饰电极上的电化学行为。结果发现,PLM/GCE在最优条件下,在8.0×10^(-6)~1.0×10^(-4)mol/L浓度范围内的氧化峰电流值与浓度呈现出较好的线性相关,线性方程为I_(p)=0.2441C+1.1296,r=0.9991。研究表明,PLM/GCE可用于对氯苯酚的电化学检测。L-methionine modified electrode(PLM/GCE)is prepared through modifying L-methionine onto the surface of bare glassy carbon electrode by means of cyclic voltammetry method.Circulating voltammetry method and differential pulse voltammetry method are respectively employed to study the electrochemical performance of the modified electrode and the electrochemical behavior of p-chlorophenol on the modified electrode.The optimal measurement conditions are explored.Study results show the oxidation peak current value of p-chlorophenol over PLM/GCE has a good linear relationship with the concentration in the concentration range of 8.0×10^(-6)-1.0×10^(-4)mol·L^(-1),and the linear equation is:I_(p)=0.2441 C+1.1296,r=0.9991.It is shown that PLM/GCE can be applied to the electrochemical detection of p-chlorophenol.

关 键 词：L-甲硫氨酸 对氯苯酚 电化学检测 修饰电极 差分脉冲伏安法 

分 类 号：X132[环境科学与工程—环境科学] O657.1[理学—分析化学]