Assessment of Pesticide Residues in Fresh Peach Samples Produced Under Integrated Crop Management in a Greek Agricultural Region on the North Greece

Ioannis V Zioris (1) , Dimitra G Lambropoulou (1) , Theoharis George Danis (2) , Dimitra T. Karagiozogloy (3) , Dr. Triantafyllos Albanis (1)

1 Department of Chemistry [Ioannina]
2 DELCOF SA
3 DELCOF SA

A multiresidue method using gas chromatography with electron impact mass spectrometry in the selected ion monitoring mode [GC-MS(SIM)] has been developed for the quantitative analysis of twenty three widely used pesticides in fresh peaches produced under integrated crop management process (ICM) in order to assess their residues. The proposed methodology involved a sample extraction procedure using liquid-liquid partition with acetonitrile followed by a cleanup step based on solid-phase extraction (SPE). Fortification studies were performed at different concentration levels for various types of peaches that differ in properties such as appearance, flavor and pit. The data showed that the different peach matrixes had no significant effect on the recoveries. The recoveries were greater than 80% for most of the studied pesticides with RSD (%) below 18%. The obtained limits of quantification (LOQs) were in the range 0.002 - 0.050 mg Kg-1, depending on the compound. Finally, the proposed method was successfully applied to the analysis of 104 fruit samples collected under IPM production during cultivation period of 2006, in order to assess the performance of the method with real samples and to determine whether the concentration of pesticides in peaches exceed their maximum residue levels (MRLs). Residues detected were lower than those established by the legislation for all pesticides, except diazinon, that exceed in one positive sample, reaching the value of 0.03 mg Kg−1. Estimated daily intake (EDI) were calculated and compared with acceptable daily intake (ADI) in order to estimate the health risk based on the pesticide exposure.

Mots clés: Life Sciences

Ioannis V Zioris, Dimitra G Lambropoulou, Theoharis George Danis, Dimitra T. Karagiozogloy, Dr. Triantafyllos Albanis. Assessment of Pesticide Residues in Fresh Peach Samples Produced Under Integrated Crop Management in a Greek Agricultural Region on the North Greece. Food Additives and Contaminants, 2009, 26 (09), pp.1256-1264. ⟨10.1080/02652030903045122⟩. ⟨hal-00573872⟩