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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 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.

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The authors thank the Deanship of research of the University of Táchira and the Agronomy Faculty of Zulia University for supporting this project.

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Correspondence to América Quintero.

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Quintero, A., Caselles, M.J., Ettiene, G. et al. Monitoring of Organophosphorus Pesticide Residues in Vegetables of Agricultural Area in Venezuela. Bull Environ Contam Toxicol 81, 393–396 (2008).

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  • Monitoring vegetables
  • Pesticides organophosphorus