title: Monitoring of organophosphorus pesticide residues in vegetables of agricultural area in Venezuela.
abstract: The purpose of this study was to determine the residues of seven pesticides organophosphorus (methamidophos, diazinon, chlorpyriphos, parathion-methyl, dimethoate, malathion and tetrachlorvinphos), in some vegetables like: potato, lettuce, tomato, onion, red pepper and green onion cultivated in José María Vargas County in Táchira State, Venezuela. The research permitted to detect that 48.0% of the samples were contaminated with some of the pesticides studied. Methamidophos was founded in the vegetables in the rank of 6.3%-65.5%. The results show that 16.7% of the samples tested have residues higher than the maximum limits permitted.
authors.affiliation: Phytochemistry Laboratory, Deanship of Research, Táchira University, San Cristóbal, Venezuela. aquinter@unet.edu.ve
authors.forename: América
authors.initials: A
authors.lastname: Quintero
authors.forename: María J
authors.initials: MJ
authors.lastname: Caselles
authors.forename: Gretty
authors.initials: G
authors.lastname: Ettiene
authors.forename: Nélida G
authors.initials: NG
authors.lastname: de Colmenares
authors.forename: Tibisay
authors.initials: T
authors.lastname: Ramírez
authors.forename: Deisy
authors.initials: D
authors.lastname: Medina