| Abstract
| - Concentrations of polychlorinated dibenzo-p-dioxins(PCDDs), dibenzofurans (PCDFs), polychlorinated biphenyls(including coplanar PCBs), and 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene (p,p‘-DDE) were measured in liversof white-tailed sea eagles collected during 1979 to 1998from eastern Germany and western Poland. Concentrationsof PCDDs, PCDFs, PCBs, and p,p‘-DDE were, respectively,in the ranges of 4.2−341 pg/g, 3.3−651 pg/g, 64−89 400ng/g, and 13−686 000 ng/g, wet wt. 23478-penta CDFwas the predominant congener in the livers, accountingfor, on average, 35% of the total PCDD/DF concentrations.The scatter plot of principal components analysis of thePCDD/DF congener profile in livers of white-tailed sea eaglesshowed a clustering of adult female sea eagles on theright side of the plot. The cluster position was driven bythe positive loadings of 2378-TCDD, 23478-PeCDF, and 234678-HxCDF and the negative loadings of 123789-HxCDD, 1234678-HpCDD, OCDD, and 2378-TCDF on principal component1, which suggested characteristic accumulation/eliminationof PCDD/DF congeners in adult females. Concentrationsof total PCBs were significantly correlated with those ofPCDDs and/or PCDFs. Non-ortho coplanar PCBs accountedfor 77% of the total TEQs. Chlorobiphenyl 126 (3,3‘,4,4‘,5-pentaCB) accounted for 66% of the PCB-TEQs. PCDDs andPCDFs accounted for, on average, 19% of the total TEQs.Concentrations of PCDDs/DFs in livers of sea eagles collectedprior to 1992 were not significantly different from thosecollected after 1992.
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