"Off-On" non-enzymatic sensor for malathion detection based on fluorescence resonance energy transfer between beta-cyclodextrin@Ag and fluorescent probe

文献类型： 外文期刊

第一作者： Wang, Miao

作者： Wang, Miao;Su, Kun;Cao, Jing;She, Yongxin;Wang, Jing;Yan, Mengmeng;Hong, Sihui;Wang, Miao;She, Yongxin;Wang, Jing;Yan, Mengmeng;Hong, Sihui;Su, Kun;Abd El-Aty, A. M.;Abd El-Aty, A. M.;Hacimuftuoglu, Ahmet;Wang, Jing;Lao, Shuibing;Wang, Yanli

作者机构：

关键词： Organophosphate pesticide; Fluorescence resonance energy transfer; Cyclodextrin; Fluorescent probe; Fast testing

期刊名称：TALANTA （ 影响因子：6.057； 五年影响因子：5.386 ）

ISSN： 0039-9140

年卷期： 2019 年 192 卷

页码：

收录情况： SCI

摘要： Here, we developed a novel non-enzymatic rapid testing method for determination of organophosphate pesticide (malathion) in water. In principle, target molecule can block the Fluorescence resonance energy transfer (FRET) between chemical fluorescent probe (energy donor) and beta-cyclodextrin-coated silver nanoparticles (@AgNP) (receptor). The effects of malathion on the dynamics of fluorescent probe and beta-cyclodextrin@AgNP were evaluated and their properties were further characterized. The current methodology showed a good sensitivity of 0.01 mu g/mL represented as a limit of detection (LOD) and the calibration curve was linear over the concentration range of 0.1-25 mu g/mL. Recovery rate from water samples spiked at 3 different concentration levels (0.3, 0.4, and 0.6 mu g/mL) showed satisfactory range between 83% and 101%.

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