Ocorrência de agrotóxicos em águas subterrâneas de áreas adjacentes a lavouras de arroz irrigado

Química Nova

Diecson Ruy Orsolin Da Silva²  Luis Antonio De Avila²  Dirceu Agostinetto²  Angela Da Cas Bundt²  Ednei Gilberto Primel¹  Sergiane Souza Caldas¹ 

[1] ,Universidade Federal de Pelotas Departamento de Fitossanidade Pelotas RS ,Brasil

关键词: contamination;    environmental fate;    residues;   

DOI  :  10.1590/S0100-40422011000500004

来源: SciELO

【 摘 要 】

The objective this study was to monitor pesticide residues in groundwater at three different times and in seven regions producing rice in southern Brazil, in the 2007/08 season. Imazethapyr and fipronil were found in all regions studied. All groundwater samples from the Planície Costeira Interna to Lagoa dos Patos and Santa Catarina contained at least one pesticide. The lowest number of contaminated samples were detected in the Southern region. The highest frequency of contaminated samples was found after drainage of the rice fields. Only fipronil exceeded limits of potability, in 27% of samples, according European Community criteria.

【 授权许可】

CC BY-NC   
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