期刊论文详细信息
Journal of the Brazilian Chemical Society
Determination of pesticides multiresidues in shallow groundwater in a cotton-growing region of Mato Grosso, Brazil
Souza, Valéria1  Universidade Federal de Mato Grosso, Cuiabá, Brazil1  Leandro, Carbo1  , Universidade Estadual Paulista, Araraquara, Brazil1  Dores, Eliana F. G. C.1  Ribeiro, Maria L.1 
关键词: pesticides;    groundwater;    SPE extraction;   
DOI  :  10.1590/S0103-50532008000600009
学科分类:化学(综合)
来源: SciELO
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【 摘 要 】

Aiming to evaluate the contamination of groundwater by pesticides in cotton growing areas, an SPE-based method (styrene-divinylbenzene copolymer - SDVB) was developed for the simultaneous determination of twelve pesticides in water by HPLC/DAD. The method was validated and average recoveries ranged from 73 to 113%, with a relative standard deviation of 2 to 16%. Detection limits ranged from 0.06 to 0.57 µg L-1. The method was applied to groundwater samples (110) from cotton fields located in "Primavera do Leste", Mato Grosso state, Brazil. Eight pesticides (acetamiprid, aldicarb, carbendazin, carbofuran, diuron, imidacloprid, methomyl and teflubenzuron) were found in the analyzed groundwater samples and 18% of them contained at least one of the pesticides (with concentrations ranging from 0.78 to 68.79 µg L-1). In some cases, detected concentrations exceeded the target levels set by the European Union. These findings confirm the vulnerability of shallow groundwater in the aforementioned areas to pesticide contamination.

【 授权许可】

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