Multiresidue analysis of pesticides in soil by supercritical fluid extraction/gas chromatography with electron-capture detection and confirmation by gas chromatography-mass spectrometry

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorRissato, SR-
Autor(es): dc.creatorGalhiane, Mario Sergio-
Autor(es): dc.creatorApon, B. M.-
Autor(es): dc.creatorArruda, MSP-
Data de aceite: dc.date.accessioned2021-03-10T16:47:15Z-
Data de disponibilização: dc.date.available2021-03-10T16:47:15Z-
Data de envio: dc.date.issued2014-05-20-
Data de envio: dc.date.issued2014-05-20-
Data de envio: dc.date.issued2005-01-12-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1021/jf048772s-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/8165-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/8165-
Descrição: dc.descriptionThe applicability of supercritical fluid extraction (SFE) in pesticide multiresidue analysis (organohalogen, organonitrogen, organophosphorus, and pyrethroid) in soil samples was investigated. Fortification experiments were conducted to test the conventional extraction (solid-liquid) and to optimize the extraction procedure in SFE by varying the CO2 Modifier, temperature, extraction time, and pressure. The best efficiency was achieved at 400 bar using methanol as modifier at 60 degreesC. For the SFE method, C-18 cartridges were used for the cleanup. The analytical screening was performed by gas chromatography equipped with electron-capture detection (ECD). Recoveries for the majority of pesticides from spiked samples of soil at different residence times were 1, 20, and 40 days at the fortification level of 0.04-0.10 mg/kg ranging from 70 to 97% for both methods. The detection limits found were <0.01 mg/kg for ECD, and the confirmation of pesticide identity was performed by gas chromatography-mass spectrometry in a selected-ion monitoring mode. Multiresidue methods were applied in real soil samples, and the results of the methods developed were compared.-
Formato: dc.format62-69-
Idioma: dc.languageen-
Publicador: dc.publisherAmer Chemical Soc-
Relação: dc.relationJournal of Agricultural and Food Chemistry-
Relação: dc.relation3.412-
Relação: dc.relation1,269-
Direitos: dc.rightsclosedAccess-
Palavras-chave: dc.subjectpesticide multiresidue analysis-
Palavras-chave: dc.subjectsupercritical fluid extraction-
Palavras-chave: dc.subjectcapillary gas chromatography-mass spectrometric detection with selective ion monitoring-
Palavras-chave: dc.subjectsoil-
Título: dc.titleMultiresidue analysis of pesticides in soil by supercritical fluid extraction/gas chromatography with electron-capture detection and confirmation by gas chromatography-mass spectrometry-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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