title: Occurrence of pesticide residues in Lebanon's water resources.
abstract: Contamination of water sources by pesticides is one of the most critical environmental problems. The present work is designed to address the occurrence of 67 pesticides in the Lebanese waters. Chemical analysis was performed by a solid-phase extraction followed by a gas chromatography-mass spectrometry using programmed temperature vaporization injection. In drinking water and groundwater samples, organochlorine and organophosphate pesticides were frequently detected with a maximal sum concentration of up to 31.8 ng L(-1). High pesticide ecotoxicological risk was noticed in many surface waters, while this risk was driven mainly by diazinon, chlorpyrifos, fenpropathrin and bifenthrin insecticides.
authors.affiliation: Analysis of Pesticides and Organic Pollutants Laboratory (LAPPO), Lebanese Atomic Energy Commission (LAEC), National Council for Scientific Research (CNRS), Beirut, Lebanon.
authors.forename: Abir
authors.initials: A
authors.lastname: Kouzayha
authors.forename: Aisha
authors.initials: A
authors.lastname: Al Ashi
authors.forename: Rami
authors.initials: R
authors.lastname: Al Akoum
authors.forename: Mohamad
authors.initials: M
authors.lastname: Al Iskandarani
authors.forename: Hélène
authors.initials: H
authors.lastname: Budzinski
authors.forename: Farouk
authors.initials: F
authors.lastname: Jaber
mesh_terms: D004784:Environmental Monitoring; D005618:Fresh Water / Q000737:chemistry; D007861:Lebanon; D009943:Organophosphorus Compounds / Q000032:analysis; D010573:Pesticide Residues / Q000032:analysis*; D052616:Solid Phase Extraction; D014874:Water Pollutants, Chemical / Q000032:analysis*; D062066:Water Resources / Q000032:analysis* / Q000706:statistics & numerical data
chemical_list: D009943:Organophosphorus Compounds; D010573:Pesticide Residues; D014874:Water Pollutants, Chemical