OCCURRENCE OF CHLORINATED PESTICIDES AND POLYCHLORINATED-BIPHENYLS INTHE STABLE AND OUTSIDE STABLE ENVIRONMENT OF FARMS FOR PIG FATTENING

Contents of some pesticides (lindane, DDT sum, o,p'-DDE, p,p'-DDE, o,p '-DDD, p,p'-DDD, o,p'-DDT, p,p'-DDT) and polychlorinated biphenyls (De lor 103, Delor 106, PCB congeners: 28, 52, 101, 118, 138, 153, 180) we re investigated on three farms of fattened pigs (D., M. and T) in Hodo nin district in 1994, as occurring in feed mixtures (n = 15), drinking water (n = 10), stable sedimented dust (n = 14), slurry (n = 10) and pavement dust (n = 5). Maximum permissible contents (MPC) of extraneou s matters in feed mixtures were exceeded in lindane (two samples)and p olychlorinated biphenyls (PCB). MPC of extraneous matters were not exc eeded in drinking waters in any of the samples examined. Feed mixtures were found to have the highest average lindane content (0.054 mg/kg) and PCB sum (0.247 mg/kg); the ratio of lower chlorinated biphenyls (D elor 103) to higher chlorinated biphenyls (Delor 106) was 12 : 1; out of the PCB congeners, the highest amounts were determined for congener s 28 (0.067 mg/kg) and 52 (0.022 mg/kg); among the DDT isomers, isomer p,p'-DDT was prevailing (0.008 mg/kg). Drinking water had the 1 : 1 r atio of lower chlorinated to higher chlorinated biphenyls; out of the PCB congeners, the highest amounts were found out for congeners 28 (2. 574 ng/l) and 101 (2.066 ng/l); among the DDT isomers, isomer p,p'-DDE was prevailing (1.887 ng/l). Stable dust was found to have the highes t average level of DDT sum (0.026 mg/kg); the ratio of lower chlorinat ed to higher chlorinated biphenyls was 1 : 7; out of the PCB congeners , the highest amounts were determined for congeners 138 (0.036 mg/kg) and 153 (0.030 mg/kg); among the DDT isomers, isomer p,p'-DDE was prev ailing (0.012 mg/kg). Slurry showed the 1 : 6 ratio of lower chlorinat ed to higher chlorinated biphenyls; out of the PCB congeners, the high est amounts were found out for congeners 138 (0.016 mg/kg dry matter) and 153 (0.014 mg/kg dry matter); among the DDT isomers, isomer p,p'-D DT was prevailing (0.005 mg/kg dry matter). Pavement dust had the 1 : 5 ratio of lower chlorinated to higher chlorinated biphenyls; out of t he PCB congeners, the highest amounts were found out for congeners 138 (0.016 mg/kg) and 153 (0.012 mg/kg); among the DDT isomers, isomer p, p'-DDE was prevailing (0.005 mg/kg). Examination of feed mixtures and drinking waters will provide basic data on pollutant inputs to the sta ble environment. Stable sedimented dust is considered as an outstandin g indicator of pollutant contamination of stable environment, regardle ss whether it comes from feed or other sources. Slurry: examination wi ll provide additional information on the total pollutant load of pig f arms, informing us about outputs of extraneous matters residues from p ig farms. Pavement dust examination indicates the level of pollutant l oad of outside stable environment as the pollutants can occasionally p enetrate to the internal stable environment.