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- W3197257357 abstract "Dicofol is an organochlorine pesticide, which is widely used in fruits, tea and other crops, and is moderately toxic to humans. Therefore, the monitoring of organochlorine pesticide-dicofol is critical for food safety. In this work, a fluorometric chemosensor based on mercaptoethanol and boron dipyrromethene (BODIPY) was first constructed to detect the dicofol. The chemosensor displayed turn-off fluorescence behavior upon dicofol with a detection limit of 200 ppb. The nucleophilicity of the glutathione and other biological thiols was studied to evaluate the reactivity of thiols with dicofol. In practical applications, an obvious color difference was observed on a paper based microfluidic device modified by phenyltriethoxysilane (PTES). We designed an integrated device for pretreatment and paper-based detection, and successfully used for the detection of dicofol in tea. The applicability was demonstrated by detection of dicofol in real tea samples with good recovery ranging from 86% to 109%. The apparatus was convenient and could be used for on-site evaluation of dicofol." @default.
- W3197257357 created "2021-09-13" @default.
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- W3197257357 date "2022-02-01" @default.
- W3197257357 modified "2023-10-16" @default.
- W3197257357 title "The BODIPY-based chemosensor for the fluorometric determination of organochlorine pesticide dicofol" @default.
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- W3197257357 doi "https://doi.org/10.1016/j.foodchem.2021.131033" @default.
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