title: Hexachlorobenzene residues in selected species of land and sea birds in northern Germany.
abstract: High residues of hexachlorobenzene (HCB) occurred in sea-bird eggs from the banks of the river Elbe, decreasing to the north in areas influenced by the running tide. The residues of polychlorinated biphenyls (PCB) and of dichlorodiphenyl-trichloroethane including its metabolites were more evenly distributed. In rooks the residues of chlorinated pesticides and PCB were dependent on the land use of the regions compared (e.g., industrial, agricultural), but no such correlation was found for the HCB residues. There was still a significant difference between the HCB residues of sparrows living in small towns and those of agricultural areas. Another source of HCB residues may be the wood preservatives; HCB contamination of two species of birds found near sawmills was greater than for birds of the same species found elsewhere.
mesh_terms: D000818:Animals; D001717:Birds / Q000378:metabolism*; D001822:Body Burden; D002722:Chlorobenzenes / Q000032:analysis*; D004531:Eggs / Q000032:analysis; D005860:Germany, West; D006581:Hexachlorobenzene / Q000032:analysis*; D008099:Liver / Q000032:analysis; D010573:Pesticide Residues / Q000032:analysis*; D011078:Polychlorinated Biphenyls / Q000032:analysis
chemical_list: D002722:Chlorobenzenes; D010573:Pesticide Residues; D006581:Hexachlorobenzene; D011078:Polychlorinated Biphenyls