Revista de Ingeniería

revinge | eISSN 2011-0049 | ISSN 0121-4993

Determinación de residuos de plaguicidas organofosforados en muestras de tomate

No. 20 (2004-11-01)
  • Paola A. Castro
    *Ingeniera Química con Maestría en Ingeniería Civil, Universidad de los Andes.
  • Juan Pablo Ramos
    **Ingeniero Civil, Universidad de los Andes. Master en manejo Ambiental, Duke University.
  • Sandra L Estévez
    ***Quimica especialista en Cromatografía, Universidad Industrial de Santander.
  • Andrea Rangel
    ****Quimica especialista en Cromatografía, Universi - dad Industrial de Santander.
https://doi.org/10.16924/revinge.20.2

Abstract

The presence of ten organophosphorus pesticides was studied in tomatoes acquired from markets in Bogotá (Colombia), using Liquid-liquid Extraction (LLE) and High Resolution Gas Chromatography (HRGC) with flame photometric detector (FPD). The pesticides analyzed were: Chlorfevinphos, Chlorpyrifos, Demeton O, Demeton S, Dichlofenthion, Dimethoate, Famphur, Leptophos and Trichlorfon. Eighteen samples were analyzed in which fifty five percent were contaminated with Dimethoate. Dimethoate levels in the contaminated samples were below the maximun residue levels (MRL) of 1 mg/kg established by the Codex alimentarius. Residues of Methyl parathion and Chlorfevinphos were also found, below the MRL.

Keywords: Pesticidas Organofosforados, tomate, contaminación, alimentos, cromatografía