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

Quimica nova

Rheinheimer, Danilo S.¹  Kurz, Márcia H. S.¹  Maroneze, Aline M.¹  Bacar, Nádia M.¹  Zanella, Renato¹  Pellegrini, João B. R.¹  Gonçalves, Celso S.¹  Bortoluzzi, Edson C.² 

[1] Universidade Federal de Santa Maria, Santa Maria, Brazil;Universidade de Passo Fundo, Passo Fundo, Brazil

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 surfacewater to pesticides, commonly used for tobacco cropping, was assessed. Waterconsumption wells and surface water flows were sampled at different times. Aftera preconcentration step with solid phase extraction (SPE), the selected pesticideswere 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 flowin the winter season. However, in the spring and summer higher concentrationsof chlorpyrifos and imidacloprid were found in the water source samples. Atrazine,simazine and clomazone were also found. The occurrence of pesticides in collectedwater samples was related with the application to tobacco.

【 授权许可】

CC BY