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.
Quintero
América
A
Phytochemistry Laboratory, Deanship of Research, Táchira University, San Cristóbal, Venezuela. aquinter@unet.edu.ve
Caselles
María J
MJ
Ettiene
Gretty
G
de Colmenares
Nélida G
NG
Ramírez
Tibisay
T
Medina
Deisy
D