Organochlorine pesticides and polychlorinated biphenyls in flatfish from the southern Baltic, 1983

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Abstract
Der Gehalt von Hexachlorbenzol (HCB)α-,β-,γ- andδ-Benzolhexachlorid (BHC; HCH), p,p′-DDE, o,p′-DDD, o,p′-DDT, p,p′-DDD und p,p′-DDT (Σ DDT) und polychlorierte Biphenyle (PCB) wurde in Muskelgewebe von 37 SteinbuttsPsetta maxima, 27 SchollenPleuronectes platessa und 106 FlundernPlatichthys flesus bestimmt, die 1983 in verschiedenen Regionen der südlichen Ostsee mit Netz gefangen wurden. Der mittlere Gehalt für obige Plattfische, bezogen auf das Naßgewicht, betrug: 0,7, 0,88 und 1.1 μg/kg HCB; 1,3, 2,6 und 3,0 μg/kgα-BHC; 11, 10 and ll μ/kgβ-BHC; 4,4, 4,9 and 5,5 μg/kgγ-BHC; δ-BHC blieb unentdeckt; 17, 18 and 20 μg/kgΣ BHC; 5,1, 5,2 und 8,7 μg/kg p,p′-DDE; o,p′-DDD blieb unentdeckt; o,p′-DDT konnte in 10 von 106 Proben von Flundern mit einem mittleren Gehalt von 17 μg/kg nachgewiesen werden; 4,6, 5,0 und 7,6 μg/kg p,p′-DDD; 3,1, 4;0 and 11 μg/kg p,p′-DDT; 13,14 und 29 μg/kgΣ DDT and 71, 66 and μg/kg PCB waren die Werte für Steinbutt, Schollen and Flunder. Hexachlorobenzene (HCB),α-,β-,γ- andδ-benzenehexachloride (BHC; HCH),p,p′-DDE,o,p′-DDD,o,p′-DDT,o,p′-DDD andp,p′-DDT (Σ DDT) and polychlorinated biphenyls (PCBs) levels have been determined in muscle tissue of 37 turbotsPsetta maxima, 27 plaicesPleuronectes platessa and 106 floundersPlatichthys flesus netted during 1983 in a different regions in the southern part of the Baltic Sea. The mean levels found for flatfish muscle tissue related to wet weight were: 0.7, 0.88 and 1.1 μg/kg HCB; 1.3, 2.6 and 3.0 μg/kgα-BHC; 11, 10 and 11 μg/kgβ-BHC; 4.4, 4.9 and 5.5 μg/kgγ-BHC;δ-BHC remained undetected; 17, 18 and 20 μg/kgΣ BHC; 5.1, 5.2 and 8.7 μg/kg p,p′-DDE; o,p′-DDD remained undetected; o,p′-DDT was detected in 10 of 106 samples of the muscle tissue of flounder at the mean level of 17 μg/kg; 4.6, 5.0 and 7.6 μg/kgp,p′-DDD; 3.1, 4.0 and 11 μg/kgp,p′-DDT; 13, 14 and 29 μg/kg Σ DDT and 71, 66 and 94 μg/kg PCBs for turbot, plaice and flounder, respectively. Generally, the levels of organochlorine pesticides and PCBs in wet muscle tissue of fish followed the increased lipids content of muscles. Some local differences in pollution pattern of organochlorines have occurred. The results are compared with levels found in flatfish collected in a different regions of the Baltic Sea during 1966–1981, and reported previously by other authors.

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