DIETARY INTAKE OF SOME ORGANOPHOSPHOURS INSECTICIDES IN SOME VEGETABLE CROPS IN EGYPT, A PRELIMINARY CASE STUDY

A total of 178 samples of commonly consumed vegetables were collected from seven different egyptian governorates in 2007 and onward. a multiresidue method was used for analysis and the pesticides determined by gas chromatography. the twenty nine organophosphorus (op) pesticides were tested with validated analytical method using gas chromatography, gc-npd. overall, 87% of the vegetables samples had no detectable organophosphorus pesticides. of the analysed samples, 13.5% contained detectable residues, of which 4.5% exceeded mrl’s.the obtained monitoring results showed that 4 out of 29 organophosphorus pesticides were detected in the analysed vegetable samples. the frequencies and percentages of detected residues were chlorpyrifos detected in 12 samples with percentage 6.7 % followed by profenofos detected in 11 samples with percentage 6.2%, then ethion and chlorpyrifos-me detected in 3 and 2 samples with percentages 1.7%, 1.1% respectively. risk assessments were also performed by calculating estimated daily intake (edi) comparing the figures with acceptable daily intake (adi). the intakes of op pesticides were generally lower than 100% of the acceptable daily intakes (adis). tomato is the most vegetables contribution of the highest op intake. the highest intake was that of profenofos 59.62 ug/ person followed by chlorpyrifos 55.62 ug/person, chlorpyrifos-me, 15.34 ug/person and then ethion 12.98 ug/person, based on gems/food consumption rate.