Investigation of the occurrence of pesticide residues in rural wells and surface water following application to tobacco

Química Nova

Rheinheimer, Danilo S.¹  Kurz, Márcia H. S.¹  Bacar, Nádia M.¹  Maroneze, Aline M.¹  Zanella, Renato¹  Bortoluzzi, Edson C.¹  Pellegrini, João B. R.¹  Universidade de Passo Fundo, Passo Fundo, Brazil¹  Gonçalves, Celso S.¹  Universidade Federal de Santa Maria, Santa Maria, Brazil¹ 

关键词: water analysis;    GC-ECD;    HPLC-DAD.;   

DOI  :  10.1590/S0100-40422007000800014

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

In this work the exposure of wells and surface water to pesticides, commonly used for tobacco cropping, was assessed. Water consumption wells and surface water flows were sampled at different times. After a preconcentration step with solid phase extraction (SPE), the selected pesticides were determined by gas chromatography with electron capture detection (GC-ECD) or high performance liquid chromatography with diode array detection (HPLC-DAD). No pesticides were detected in the well water samples and surface water flow in the winter season. However, in the spring and summer higher concentrations of chlorpyrifos and imidacloprid were found in the water source samples. Atrazine, simazine and clomazone were also found. The occurrence of pesticides in collected water samples was related with the application to tobacco.

【 授权许可】

Unknown