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Article: Fluorescence detection of 2,4-dichlorophenoxyacetic acid by ratiometric fluorescence imaging on paper-based microfluidic chips

TitleFluorescence detection of 2,4-dichlorophenoxyacetic acid by ratiometric fluorescence imaging on paper-based microfluidic chips
Authors
KeywordsMolecular Imprinting
4-Vinylpyridine
Solid Phase Extraction
Issue Date2020
PublisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/analyst
Citation
The Analyst, 2020, v. 145 n. 3, p. 963-974 How to Cite?
AbstractFluorescence detection of pesticide contamination enables timely control of food safety. This study aims to construct novel and facile microfluidic paper-based analytical devices for the ratiometric fluorescence determination of pesticides. Through fluorescence resonance energy transfer (FRET) of nitrobenzoxadiazole (NBD) and CdTe quantum dots (QDs), the new microfluidic paper chips allowed the rapid and selective visual detection of 2,4-dichlorophenoxyacetic acid (2,4-D). The performance changes of the fluorescent material on solid matrix material were studied in detail. The sensor products exhibited visual observability and fluorescence characteristics. Under optimized conditions, the sensors showed satisfactory linearity in the range of 0.56-80 μM, and achieved detection limits as low as 90 nM. The sensors were successfully applied for soybean sprouts and lake water samples. Four levels of spiked-in 2,4-D concentrations were obtained with high recovery rates ranging from 86.2% to 109.5% and the RSD less than 4.19%. Thus, the present work described the integration of surface imprinted grafts on cellulose paper and ratiometric fluorescence techniques for highly sensitive separation and detection of pesticides in real food and environmental samples. Ultimately, this study paved the way for the development of novel ratiometric fluorescence detection to address food safety and environmental issues.
Persistent Identifierhttp://hdl.handle.net/10722/283772
ISSN
2019 Impact Factor: 3.978
2015 SCImago Journal Rankings: 1.300

 

DC FieldValueLanguage
dc.contributor.authorZhang, Z-
dc.contributor.authorMa, X-
dc.contributor.authorLi, B-
dc.contributor.authorZhao, J-
dc.contributor.authorQi, J-
dc.contributor.authorHao, G-
dc.contributor.authorRong, J-
dc.contributor.authorYang, X-
dc.date.accessioned2020-07-03T08:23:53Z-
dc.date.available2020-07-03T08:23:53Z-
dc.date.issued2020-
dc.identifier.citationThe Analyst, 2020, v. 145 n. 3, p. 963-974-
dc.identifier.issn0003-2654-
dc.identifier.urihttp://hdl.handle.net/10722/283772-
dc.description.abstractFluorescence detection of pesticide contamination enables timely control of food safety. This study aims to construct novel and facile microfluidic paper-based analytical devices for the ratiometric fluorescence determination of pesticides. Through fluorescence resonance energy transfer (FRET) of nitrobenzoxadiazole (NBD) and CdTe quantum dots (QDs), the new microfluidic paper chips allowed the rapid and selective visual detection of 2,4-dichlorophenoxyacetic acid (2,4-D). The performance changes of the fluorescent material on solid matrix material were studied in detail. The sensor products exhibited visual observability and fluorescence characteristics. Under optimized conditions, the sensors showed satisfactory linearity in the range of 0.56-80 μM, and achieved detection limits as low as 90 nM. The sensors were successfully applied for soybean sprouts and lake water samples. Four levels of spiked-in 2,4-D concentrations were obtained with high recovery rates ranging from 86.2% to 109.5% and the RSD less than 4.19%. Thus, the present work described the integration of surface imprinted grafts on cellulose paper and ratiometric fluorescence techniques for highly sensitive separation and detection of pesticides in real food and environmental samples. Ultimately, this study paved the way for the development of novel ratiometric fluorescence detection to address food safety and environmental issues.-
dc.languageeng-
dc.publisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/analyst-
dc.relation.ispartofThe Analyst-
dc.subjectMolecular Imprinting-
dc.subject4-Vinylpyridine-
dc.subjectSolid Phase Extraction-
dc.titleFluorescence detection of 2,4-dichlorophenoxyacetic acid by ratiometric fluorescence imaging on paper-based microfluidic chips-
dc.typeArticle-
dc.identifier.emailZhao, J: zhaojia7@hku.hk-
dc.identifier.emailRong, J: jrong@hku.hk-
dc.identifier.authorityRong, J=rp00515-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1039/C9AN01798D-
dc.identifier.pmid31828260-
dc.identifier.scopuseid_2-s2.0-85079019513-
dc.identifier.hkuros310727-
dc.identifier.volume145-
dc.identifier.issue3-
dc.identifier.spage963-
dc.identifier.epage974-
dc.publisher.placeUnited Kingdom-

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