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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/48825
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dc.creatorEduard Ferney Valenzuela Toledopt_BR
dc.creatorHelvécio Costa Menezespt_BR
dc.creatorZenilda de Lourdes Cardealpt_BR
dc.date.accessioned2023-01-10T17:00:30Z-
dc.date.available2023-01-10T17:00:30Z-
dc.date.issued2019-
dc.citation.volume1054pt_BR
dc.citation.spage26pt_BR
dc.citation.epage37pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.aca.2018.12.017pt_BR
dc.identifier.issn0003-2670pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/48825-
dc.description.resumoThe extensive use of pesticides promotes environmental contamination, mainly in surface and ground waters. However, they remain at very low concentration and present wide degradation level requiring the use of efficient devices for pesticides passive sampling. In this study, a new in situ passive sampling device was developed for monitoring and estimating time-weighted average (TWA) of pesticides in waters. The device was made with simple, recyclable and cheap materials. The sampling system involves the liquid phase microextraction technique with hollow fiber in two-phases mode. Pesticides determination was done by gas chromatography coupled to mass spectrometry. The method was optimized and validated for the determination of 29 pesticides in water, showing good linearity in the range between 0.012 and 40.00 μg L−¹ with determination coefficients of R² > 0,9649. Limit of detection (LOD) ranged from 0.009 to 0.557 μg L−¹ and limit of quantification (LOQ) from 0.012 to 0.802 μg L−¹. The recoveries of spiked pesticides in water samples were in the range from 96 to 130%. The method was applied to forty environmental water samples collected at São Francisco river basin, Brazil. The highest detection frequency was found for the pesticides 4,4-DDE, 4,4-DDD and propazine. They were detected in more than 20 percent of the samples.pt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorpt_BR
dc.description.sponsorshipOutra Agênciapt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE QUÍMICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofAnalytica Chimica Actapt_BR
dc.rightsAcesso Restritopt_BR
dc.subjectSampling devicept_BR
dc.subjectPassive samplingpt_BR
dc.subjectHollow fiber liquid phase microextractionpt_BR
dc.subjectPesticidespt_BR
dc.subjectSurface waterpt_BR
dc.subject.otherQuímica analíticapt_BR
dc.subject.otherPesticidaspt_BR
dc.subject.otherProdutos químicos agrícolaspt_BR
dc.subject.otherPoluentes orgânicos aquáticospt_BR
dc.subject.otherCromatografia de gáspt_BR
dc.subject.otherEspectrometria de massapt_BR
dc.subject.otherExtração (Química)pt_BR
dc.titleNew passive sampling device for effective monitoring of pesticides in waterpt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.sciencedirect.com/science/article/pii/S0003267018314521pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-5759-612Xpt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-1383-6299pt_BR
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