Rapid Detection of Dimethoate in Soybean Samples by Microfluidic Paper Chips Based on Oil-Soluble CdSe Quantum Dots

Given the imperative of monitoring organophosphorus pesticides (OPs) residues in the ecosystem, here a novel, facile and sensitive fluorescence sensor is presented for the rapid detection of dimethoate. In this work, surface molecularly imprinted polymer (SMIP) and microfluidic technology had been i...

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Autores principales:	Xinpeng Yan, Zhong Zhang, Runguang Zhang, Tian Yang, Guoying Hao, Li Yuan, Xingbin Yang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	oil-soluble CdSe QDs dimethoate microfluidic paper chip fluorescence sensor Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/1970bbfe72ee46c689a6fbf7fc5a0be0
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spelling	oai:doaj.org-article:1970bbfe72ee46c689a6fbf7fc5a0be02021-11-25T17:35:53ZRapid Detection of Dimethoate in Soybean Samples by Microfluidic Paper Chips Based on Oil-Soluble CdSe Quantum Dots10.3390/foods101128102304-8158https://doaj.org/article/1970bbfe72ee46c689a6fbf7fc5a0be02021-11-01T00:00:00Zhttps://www.mdpi.com/2304-8158/10/11/2810https://doaj.org/toc/2304-8158Given the imperative of monitoring organophosphorus pesticides (OPs) residues in the ecosystem, here a novel, facile and sensitive fluorescence sensor is presented for the rapid detection of dimethoate. In this work, surface molecularly imprinted polymer (SMIP) and microfluidic technology had been introduced to enhance the selectivity and portability of the described methodology. Oil-soluble CdSe quantum dots (QDs) synthesized in a green way were used as fluorescent material for the selective detection of dimethoate on the basis of static quenching and photoinduced electron transfer mechanism. Among many kinds of paper materials, glass fiber paper was used as the novel substrate of paper chip due to low pristine fluorescence and better performance when combining CdSe QDs. In the process of molecular imprinting, the interaction between several functional monomers and dimethoate molecule was investigated and simulated theoretically by software to improve the selectivity of the sensor. Consequently, the fabricated novel detection platform could effectively respond to dimethoate in 10 min with the concentration range of 0.45–80 μmol/L and detection limit of 0.13 μmol/L. The recovery in the spiked experiment soybean sample was in an acceptable range (97.6–104.1%) and the accuracy was verified by gas chromatography-mass spectrometry, which signified the feasibility and potential in food sampling.Xinpeng YanZhong ZhangRunguang ZhangTian YangGuoying HaoLi YuanXingbin YangMDPI AGarticleoil-soluble CdSe QDsdimethoatemicrofluidic paper chipfluorescence sensorChemical technologyTP1-1185ENFoods, Vol 10, Iss 2810, p 2810 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	oil-soluble CdSe QDs dimethoate microfluidic paper chip fluorescence sensor Chemical technology TP1-1185
spellingShingle	oil-soluble CdSe QDs dimethoate microfluidic paper chip fluorescence sensor Chemical technology TP1-1185 Xinpeng Yan Zhong Zhang Runguang Zhang Tian Yang Guoying Hao Li Yuan Xingbin Yang Rapid Detection of Dimethoate in Soybean Samples by Microfluidic Paper Chips Based on Oil-Soluble CdSe Quantum Dots
description	Given the imperative of monitoring organophosphorus pesticides (OPs) residues in the ecosystem, here a novel, facile and sensitive fluorescence sensor is presented for the rapid detection of dimethoate. In this work, surface molecularly imprinted polymer (SMIP) and microfluidic technology had been introduced to enhance the selectivity and portability of the described methodology. Oil-soluble CdSe quantum dots (QDs) synthesized in a green way were used as fluorescent material for the selective detection of dimethoate on the basis of static quenching and photoinduced electron transfer mechanism. Among many kinds of paper materials, glass fiber paper was used as the novel substrate of paper chip due to low pristine fluorescence and better performance when combining CdSe QDs. In the process of molecular imprinting, the interaction between several functional monomers and dimethoate molecule was investigated and simulated theoretically by software to improve the selectivity of the sensor. Consequently, the fabricated novel detection platform could effectively respond to dimethoate in 10 min with the concentration range of 0.45–80 μmol/L and detection limit of 0.13 μmol/L. The recovery in the spiked experiment soybean sample was in an acceptable range (97.6–104.1%) and the accuracy was verified by gas chromatography-mass spectrometry, which signified the feasibility and potential in food sampling.
format	article
author	Xinpeng Yan Zhong Zhang Runguang Zhang Tian Yang Guoying Hao Li Yuan Xingbin Yang
author_facet	Xinpeng Yan Zhong Zhang Runguang Zhang Tian Yang Guoying Hao Li Yuan Xingbin Yang
author_sort	Xinpeng Yan
title	Rapid Detection of Dimethoate in Soybean Samples by Microfluidic Paper Chips Based on Oil-Soluble CdSe Quantum Dots
title_short	Rapid Detection of Dimethoate in Soybean Samples by Microfluidic Paper Chips Based on Oil-Soluble CdSe Quantum Dots
title_full	Rapid Detection of Dimethoate in Soybean Samples by Microfluidic Paper Chips Based on Oil-Soluble CdSe Quantum Dots
title_fullStr	Rapid Detection of Dimethoate in Soybean Samples by Microfluidic Paper Chips Based on Oil-Soluble CdSe Quantum Dots
title_full_unstemmed	Rapid Detection of Dimethoate in Soybean Samples by Microfluidic Paper Chips Based on Oil-Soluble CdSe Quantum Dots
title_sort	rapid detection of dimethoate in soybean samples by microfluidic paper chips based on oil-soluble cdse quantum dots
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/1970bbfe72ee46c689a6fbf7fc5a0be0
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Rapid Detection of Dimethoate in Soybean Samples by Microfluidic Paper Chips Based on Oil-Soluble CdSe Quantum Dots

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