title: [Residues of chlorinated pesticides and polychlorinated biphenyls in pork and ham in past years and today].
abstract: The contents of the residues of chlorinated pesticides and polychlorinated biphenyls (PCB) were investigated in 682 samples of ham and 926 samples of pork that were collected in the export meat plants. The investigation, based on the gas chromatography method with an EC detector, was performed in 1986. The tolerance of the residues of chlorinated pesticides was exceeded in 0.4% of the hams and 0.3% of the pork samples in that year. The PCB limit, proposed for pork (1.0 mg per kg of fat) was exceeded in 0.7% of the hams and 0.8% of pork samples; it can be seen from these data that the residue contents were considerably reduced in comparison with the year 1983 when this limit was exceeded in 7.0% of the hams and 6.2% of the pork samples. This decrease is due to the fact that the production of PCB was stopped, their use has been restricted, and the persons working with preparations containing PCB have been better informed about the chemical persistence, problems of residues and the like. The meat of wild boars is more contaminated than is the meat of the domestic pigs reared in large herds; this applies, first of all, to the residues of the DDT series (12.7% of the meat samples of the wild boars exceeded the limit of 2.0 mg per kg of fat) and also to the residues of HCB, lindane, and PCB. As for the PCB residues, the maximum tolerated residue content was never exceeded. A decrease in the contents of chlorinated pesticide and PCB residues resulting from the limited use of these chemicals is faster in the meat of the domestic pigs than in that of the wild boars.
mesh_terms: D000818:Animals; D003604:Czechoslovakia; D007306:Insecticides / Q000032:analysis*; D008460:Meat / Q000032:analysis*; D010573:Pesticide Residues / Q000032:analysis*; D011078:Polychlorinated Biphenyls / Q000032:analysis*; D013552:Swine
chemical_list: D007306:Insecticides; D010573:Pesticide Residues; D011078:Polychlorinated Biphenyls
vernacular_title: Rezidua chlórovaných pesticidů a polychlórovaných bifenylů ve veprovém mase a sunkách v minulých letech a v soucasnosti.