Multiresidue matrix solid-phase dispersion (MSPD) technique with capillary gas chromatographic detection for determination and quantification of ten commonly used organophosphorus pesticides (chlorpyrifos, chlorpyrifos-rnethyl. diazinon, dimethoate, fenitrothion, formothion, malathion, parathion, phosalone, pirimiphos-rnethyl) in fruits and vegetables is described. The method gave high recoveries for all spiked samples in 80-120% range. The limits of detection were from 0.01 w 0.1 mg/kg for che compounds studied and were much lower chan maximum residue levels (MRLs) allowed. The procedure was applied to the deterrninatien of ten organophosphorus pesticides in samples collected during che routine crop monitoring.

The results of studies on residues of dithiocarbamate fungicides in 13 different crops during 1999-2000 are presented. According ro monitoring programme 2,226 samples of fruits and vegetables were collected from the productions sites in the whole country. The samples were analyzed for residue content by a spectrophotometric method. In 11.3% of samples the residues were detected. Residues exceeding Polish MRLs were found in 10 samples (0.5 %).