mds nordion canada was calibrated using aqueous ferrous sulfate fricke dosimetry solution astm standard practice e1026 1997 the typical dose rate was 14 52 kgy h u2212 1 and transit dose was estimated to be 5 86 gy sec u2212 1 all of the irradiations were conducted at room temperature 23 u00b0 c a shimadzu 2010 series gc with qp2010 mass spectrometer and hp 5 capillary column hewlett packard 30 m 0 25 mm i d 0 25 u03bcm film thickness was used for gas chromatography analysis the helium carrier gas velocity was 40 cm s high pressure injection was set at on and high pressure and injection pressure were set at 250 kpa the temperatures of injector ion source and interface were set at 250 u00b0 c 200 u00b0 c and 250 u00b0 c respectively and the oven program was 2 minutes at 80 u00b0 c 20 u00b0 c minute to 180 u00b0 c 2 minutes and 5 u00b0 c minute to 250 u00b0 c 5 minutes ions were formed for mass spectrometric detection using ion electron impact ionization ei mode scan ei mass spectra database searches were carried out using the wiley registry of mass spectral data and the nist mass spectral search program aqueous solutions samples were analyzed according to the official method adopted by epa 1980 and letizia et al 1992 on the other hand general official multi residues analysis methods approved by federal agencies and organizations anonymous a o a c official methods of analysis 2000 for analysis of pesticides residues in fresh vegetables and fruits samples were implemented monitored and irradiated gas chromatography in combination with mass selective detector msd was used for the parent compound analysis identification and quantification under the same mentioned conditions.