Diazinon residue in greenhouse cucumber of Tehran fruit and vegetable market

To evaluate Diazinon residue in greenhouse cucumber in fruit and vegetable marketsin Tehrans, 90 samples were conducted from 59 area selected by stratified samplingmethod. First the samples divided by two groups, washed samples and not washedsamples, then each of them divided by three types peeled, not peeled and only peelings.The residues measured in all of the type samples extracted by solid phase extractionmethod and extracts analyzed by GC and GC/MS systems. Results showed that in twosamples there were residue higher than the Maximum Residual Levels, and the amountof residue were 1.2 ppm in washed and notpeeled sample (washed cucumber) and 10.4ppm in not washed peel sample.