| monitoring of organophosphorus pesticide residues in vegetables of agricultural area in venezuela. | 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 veg ... | 2008 | 18766290 |