Dynamics of fipronil in Oleo Lagoon in Jatai Ecological Station, São Paulo-Brazil

Dynamics of fipronil in Oleo Lagoon in Jatai Ecological Station, São Paulo-Brazil

Autor Peret, Andre Moldenhauer Autor UNIFESP Google Scholar
Oliveira, Luciana Fontes Autor UNIFESP Google Scholar
Bianchini, Irineu Autor UNIFESP Google Scholar
Regali Seleghim, Mirna Helena Autor UNIFESP Google Scholar
Peret, Alberto Carvalho Autor UNIFESP Google Scholar
Mozeto, Antonio Aparecido Autor UNIFESP Google Scholar
Instituição Universidade Federal de São Paulo (UNIFESP)
Resumo Fipronil is a phenylpyrazole pesticide widely used to protect sugar-cane crops from insect pests. After reaching the environment, this insecticide may have several fates. This research aimed to propose a kinetic model to describe the fate of commercial fipronil Regent 800WG (R) in the sediment-water interface of the Oleo Lagoon in the Mogi-Guacu river floodplain, situated within the Jatai Ecological Station, by means of a microcosm scale experiment. Results showed that a small fraction of the pesticide is quickly dragged to the sediment while most of it remains in the water column. Biodegradation proves to be an important fipronil degradation route, especially when microorganisms capable of using fipronil as sole carbon source increase their population, as a function of exposure time. Biodegradation rates were higher in the sediment than in the water column. (C) 2009 Elsevier B.V. All rights reserved.
Assunto Fipronil
Degradation
First order kinetics
Microcosm
Idioma Inglês
Financiador Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Número do financiamento CNPq: 06/56723-7
Data 2010-03-01
Publicado em Chemosphere. Oxford: Pergamon-Elsevier B.V., v. 78, n. 10, p. 1225-1229, 2010.
ISSN 0045-6535 (Sherpa/Romeo, fator de impacto)
Editor Elsevier B.V.
Extensão 1225-1229
Fonte http://dx.doi.org/10.1016/j.chemosphere.2009.12.060
Direito de acesso Acesso restrito
Tipo Artigo
Web of Science WOS:000275772600006
URI http://repositorio.unifesp.br/handle/11600/32329

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