الفهرس 
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Abstract
TheimpactofsomeorganiccontaminantsonresidentsofTantaandIsmailiacitiesofEgypt through consumption of vegetables, fruits and fish (tilapia and catfish) examined.Residuesoforganochlorine(OCs)andorganophosphorus(OPs)insecticidesandpolychlorinatedbiphenyls(PCBs)werecomparedwithmaximumresidue limits(MRLs)andevaluatedprobablehealthrisktoconsumers.OPsresidueswerethemostdetected.PCBscongeners 28,70,52 and180 weredetectedintilapiafish fromTanta,but congeners 28and180 weretheonlyappearedinsamples ofIsmailia.∑PCBS valuesinallmatricesdidnotexceed MRLs.Targethazardquotient(THQ)exhibitedvaluesgreaterthanunity forallcompoundsat50thand90thpercentileofingestion.Hazard Index(HI)exhibitedthedecreasingorder:catfish> vegetables>fruits>tilapiainTantawhile,inIsmailiatheorderwastilapia>fruit> vegetables. The risk values for adults were greater than those of children categories,representingsomeriskviaconsumptionofcontaminatedvegetables,fruitsandfishshowedin our study.
Residues of some heavy metals (HMs) were monitored in vegetable, fruit and fish samples. The mean values detected were 5.38, 0.62, 85.96, 6.41 and 55.05 mg/kg for Cu, Pb, Zn, Cd and Mn, respectively. Meanwhile, hazard Index (HI) showed the following order: Cd˃Mn˃Cu˃Zn˃Pb. The present study indicated that the repetitive consumption of particular type fish might pose some undesirable health effects. The study also emphasized the need for regular monitoring program beside the need for awareness raising about the food contamination with heavy metals.
Keywords:Heavy metals, pesticides and PCBs residues; vegetables; fruits; fish; food consumption, risk assessment; Egypt.