Occurrence of agrochemicals in surface waters of shallow soils and steep slopes cropped to tobacco

Quimica nova

Copetti, André Carlos Cruz¹  Reinert, Dalvan José¹  Santos, Danilo Rheinheimer dos¹  Reichert, José Miguel¹  Sequinatto, Letícia² 

[1] Universidade Federal de Santa Maria, Santa Maria, Brasil;Universidade do Estado de Santa Catarina, Lages, Brasil

关键词: environmental contamination;    pesticides;    water quality.;   

DOI  :  10.1590/S0100-40422013000600004

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Tobacco cultivation in shallow soils and steep landscape under intense use of agrochemicals contributes to environment degradation. In this study, we assessed the concentration of agrochemicals in draw wells used for human consumption and a creek in a small catchment predominantly cropped to tobacco. Chlorpyrifos, flumetralin, and iprodione were determined by gas chromatography with electron capture detection, while imidalcloprid, atrazine, simazine, and clomazone were quantified by high-performance liquid chromatography with UV detection. Considering all sampling sites, all agrochemicals were detected at least once, except for flumetralin. The occurrence of agrochemicals in tobacco crops is a consequence of their fast transfer to surface water.

【 授权许可】

CC BY