β-环糊精修饰CdTe荧光探针制备及用于菊酯类农药代谢产物检测  

Preparation ofβ-cyclodextrin-modified CdTe fluorescent probe and its application for the detection of metabolite of pyrethroid pesticides

作　　者：朱冬冬 白龙 叶泰[1] 徐斐[1] 曹慧[1] 袁敏[1] 于劲松[1] 吴秀秀 郝丽玲 阴凤琴 ZHU Dongdong;BAI Long;YE Tai;XU Fei;CAO Hui;YUAN Min;YU Jinsong;WU Xiuxiu;HAO Liling;YIN Fengqin(School of Health Science and Engineering,University of Shanghai for Science and Technology,Shanghai Engineering Technology Research Center for Rapid Food Detection,Shanghai 200093,China)

机构地区：[1]上海理工大学健康科学与工程学院,上海食品快速检测工程技术研究中心,上海200093

出　　处：《分析试验室》2023年第6期791-795,共5页Chinese Journal of Analysis Laboratory

基　　金：上海市科技兴农项目(2019-02-08-00-12-F01144)资助。

摘　　要：建立了基于β-环糊精修饰的CdTe量子点(β-CD-CdTe)探针的菊酯类农药代谢产物的荧光检测方法。通过β-CD-CdTe的杯烃结构和菊酯类农药代谢产物间苯氧基苯甲醛(3-PBALD)苯环之间的“主-客体”相互作用形成包络物,实现了对3-PBALD的定量测定。在优化条件下,该荧光探针响应值与间苯氧基苯甲醛浓度在0.05~0.5μg/mL之间呈线性关系,线性方程为?IF=681.2c+192.5,检出限为0.03μg/mL。将其应用于水样中间苯氧基苯甲醛加标回收实验,回收率在84.7%~91.6%之间,相对标准偏差(RSD)低于4.3%。A fluorescent method was developed for the detection of metabolite of pyrethroid pesticides based onβ-cyclodextrin-modified CdTe quantum dots(β-CD-CdTe)probe.Through the host-guest interaction between target andβ-cyclodextrin,the quantitative detection of 3-phenoxybenzaldehyde(3-PBALD)can be achieved.Under the optimum conditions,the change of fluorescence intensity had a good linear relationship with the concentration of 3-PBALD between 0.05 and 0.5μg/mL,the linear equation wasΔIF=681.2c+192.5 and the detection limit was 0.03μg/mL.Theβ-CD-CdTe was successfully applied to the detection of 3-PBALD in the spiked water samples with the recoveries of 84.7%-91.6%and the relative standard deviation(RSD)of lower than 4.3%.

关 键 词：拟除虫菊酯农药 硼亲和 主客体相互作用 功能化 

分 类 号：O657.3[理学—分析化学]