Abstract

Organochlorines pesticides (OCPs) are persistent organic pollutants known by their persistence, their ability to bioaccumulate in the food chain and by their toxicity. This work aims to analyze pesticides in draining water samples taken from two different regions from Tunisia. A liquid-liquid extraction method proposed by the International Atomic Energy Agency (IAEA) has been adopted for the extraction of OCPs from draining water. The analysis of these compounds was carried out with a gas chromatography coupled to mass spectrometry. Eight draining water sample was analyzed from the region of Kebili and levels of OCPs ranged between ND and 3.415 ng L⁻¹. Four draining water samples were sampled from the region of Cap Bon and levels of OCPs in draining water varied between 14.955 and 59.305 ng L⁻¹. The concentration of OCPs in draining water didn’t exceed the limits standardized by the regulations for drainage water, which makes possible the reuse of this water for agricultural purposes after having undergone a secondary treatment.

摘要

有机氯农药 (OCP) 是一种持久性有机污染物，以其持久性、在食物链中的生物累积能力和毒性而著称。这项工作旨在分析从突尼斯两个不同地区采集的排水样本中的农药。国际原子能机构 (IAEA) 提出的液-液萃取法已被用于从废水中提取 OCPs。这些化合物的分析使用与质谱联用的气相色谱法进行。对 Kebili 地区的八个排水样本进行了分析，OCPs 的水平在 ND 和 3.415 ng L ^-1之间。从 Cap Bon 地区采集了四个排水样品，排水中的 OCP 水平在 14.955 和 59.305 ng L ^{-1之间变化}. 排水中OCPs的浓度没有超过排水法规规定的限值，这使得该水经过二级处理后可用于农业用途。