电化学聚合L-赖氨酸修饰玻碳电极的吡虫啉电化学传感器  

An imidacloprid electrochemical sensor based on electropolymerization of L-lysine on glass carbon electrode

作　　者：王蓉 罗幼刚 曾冬梅 甘源 章表明 陈志林 WANG Rong;LUO You-gang;ZENG Dong-mei;GAN Yuan;ZHANG Biao-ming;CHEN Zhi-lin(Guangxi Key Lab of Agricultural Resources Chemistry and Biotechnology,College of Chemistry and Food Science,Yulin Normal University,Yulin 537000,China)

机构地区：[1]广西农产资源化学与生物技术重点实验室,玉林师范学院化学与食品科学学院,广西玉林537000

出　　处：《化学研究与应用》2024年第6期1250-1257,共8页Chemical Research and Application

基　　金：国家自然科学基金项目(51963021)资助;广西自然科学基金项目(2020GXNSFBA159035)资助。

摘　　要：本文采用电化学聚合方法在玻碳电极表面直接一步沉积制备L-赖氨酸聚合物(L^(-1)ysinePolymer,PLLS)薄膜,制备了对吡虫啉(Imidacloprid,IDP)具有响应的传感电极,并对PLLS聚合条件、溶液pH、富集时间、测定参数进行了优化。在最优条件下,所构建的传感器对IDP的线性响应范围为3~100μmol·L^(-1),检出限为0.9μmol·L^(-1),且传感器具有较好的重复性和选择性,在葡萄样品中的回收率为72.20~107.3%,满足实际应用要求。In this work,L-ysine polymer(PLLS)film was directly deposited on the surface of glass carbon electrode with electro-chemical polymerization method,which was specific response to imidacloprid(IDP).After optimizing the electrochemical polymerization conditions,pH,enrichment time and test parameters,the linear response range of the constructed sensor was 3~100μmol·L^(-1),and the limit of detection was 0.9μmol·L^(-1),Moreover the sensors also showed good repeatability and selectivity,and potential application in real samples with 72.20~107.3%recovery rate of grape samples.

关 键 词：L-赖氨酸 吡虫啉 电化学传感器 农药检测 

分 类 号：O646[理学—物理化学]