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Campo DC | Valor | Idioma |
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dc.contributor.author | Pinheiro, Anselmo de Souza | - |
dc.contributor.author | Andrade, Jailson Bittencourt de | - |
dc.creator | Pinheiro, Anselmo de Souza | - |
dc.creator | Andrade, Jailson Bittencourt de | - |
dc.date.accessioned | 2012-06-25T19:51:07Z | - |
dc.date.issued | 2009-10-15 | - |
dc.identifier.issn | 0039-9140 | - |
dc.identifier.uri | http://www.repositorio.ufba.br/ri/handle/ri/6220 | - |
dc.description | Trabalho completo: acesso restrito, p.1354–1359 | pt_BR |
dc.description.abstract | A single-drop microextraction (SDME) procedure was developed for the analysis of organophosphorus and pyrethroid pesticides in water by gas chromatography (GC) with flame ionization detection (GC-FID). The significant parameters that affect SDME performance, such as the selection of microextraction solvent, solvent volume, extraction time, and stirring rate, were studied and optimized using a tool screening factorial design. The limits of detection (LODs) in water for the four investigated compounds were between 0.3 and 3.0 μg L−1, with relative standard deviations ranging from 7.7 to 18.8%. Linear response data were obtained in the concentration range of 0.9–6.0 μg L−1 (λ-cyhalothrin), 3.0–60.0 μg L−1 (methyl parathion), 9.0–60.0 μg L−1 (ethion), and 9.0–30.0 μg L−1 (permethrin), with correlation coefficients ranging from 0.9337 to 0.9977. The relative recoveries for the spiked water ranged from 73.0 to 104%. Environmental water samples (n = 26) were successfully analyzed using the proposed method and methyl parathion presented concentration up to 2.74 μg L−1. The SDME method, coupled with GC-FID analysis, provided good precision, accuracy, and reproducibility over a wide linear range. Other highlights of the method include its ease of use and its requirement of only small volumes of both organic solvent and sample. | pt_BR |
dc.language.iso | en | pt_BR |
dc.publisher | Elsevier | pt_BR |
dc.source | http://dx.doi.org.ez10.periodicos.capes.gov.br/10.1016/j.talanta.2009.06.002 | pt_BR |
dc.subject | Single-drop microextraction | pt_BR |
dc.subject | Organophosphorus | pt_BR |
dc.subject | Pyrethroids | pt_BR |
dc.subject | GC-FID | pt_BR |
dc.subject | SDME | pt_BR |
dc.title | Development, validation and application of a SDME/GC-FID methodology for the multiresidue determination of organophosphate and pyrethroid pesticides in water | pt_BR |
dc.title.alternative | Talanta | pt_BR |
dc.type | Artigo de Periódico | pt_BR |
dc.identifier.number | v. 79, n. 5 | pt_BR |
dc.embargo.liftdate | 10000-01-01 | - |
Aparece nas coleções: | Artigo Publicado em Periódico (Química) |
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