Application of the molecularly imprinted solid-phase extraction to the organophosphate residues determination in strawberries

Anal Bioanal Chem. 2012 Oct;404(6-7):1959-66. doi: 10.1007/s00216-012-6327-6. Epub 2012 Sep 12.

Abstract

This study describe an analytical method employing gas chromatography (GC) using flame photometric detection that has been developed for the simultaneous determination of organophosphate pesticides (diazinon, disulfoton, parathion, chlorpyrifos and malathion) in strawberry samples. For this purpose, molecularly imprinted solid-phase extraction was applied as a sample preparation technique. The method was linear in the ranges from 0.10 to 1.00 μg g(-1), for diazinon, disulfoton, parathion and chlorpyrifos, and 0.10 to 2.00 μg g(-1) for malathion with r > 0.99. The detection limits (LD) ranged from 0.02 to 0.05 μg g(-1). Recovery studies yielded average recoveries in the range of 65.25 to 87.70 %. These results showed the potential of this technique for organophosphate residue monitoring in strawberry samples.

Publication types

  • Evaluation Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adsorption
  • Chromatography, Gas / methods
  • Food Contamination / analysis
  • Fragaria / chemistry*
  • Molecular Imprinting
  • Organothiophosphorus Compounds / analysis
  • Organothiophosphorus Compounds / isolation & purification*
  • Pesticide Residues / analysis
  • Pesticide Residues / isolation & purification*
  • Polymers / chemical synthesis
  • Polymers / chemistry*
  • Solid Phase Extraction / instrumentation
  • Solid Phase Extraction / methods*

Substances

  • Organothiophosphorus Compounds
  • Pesticide Residues
  • Polymers