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

被引：15

作者：

Peret, Andre Moldenhauer ^{[1
]}

Oliveira, Luciana Fontes ^{[1
]}

Bianchini, Irineu, Jr. ^{[2
]}

Regali Seleghim, Mirna Helena ^{[3
]}

Peret, Alberto Carvalho ^{[2
]}

Mozeto, Antonio Aparecido ^{[1
]}

机构：

[1] Univ Fed Sao Paulo, Dept Quim, Sao Paulo, Brazil

[2] Univ Fed Sao Paulo, Dept Hidrobiol, Sao Carlos, SP, Brazil

[3] Univ Fed Sao Paulo, Dept Ecol & Biol Evolut, Sao Carlos, SP, Brazil

来源：

CHEMOSPHERE | 2010年 / 78卷 / 10期

基金：

巴西圣保罗研究基金会;

关键词：

Fipronil; Degradation; First order kinetics; Microcosm; DEGRADATION; PESTICIDES;

D O I：

10.1016/j.chemosphere.2009.12.060

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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 Ltd. All rights reserved.

引用

页码：1225 / 1229

页数：5

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