title: Polychlorinated biphenyls and organochlorine pesticides in local waterbird eggs from Hong Kong: risk assessment to local waterbirds.
abstract: The contamination status of the marine environment in Hong Kong was studied by measuring concentrations of organochlorine (OC) pollutants (i.e., hexachlorobenzene, aldrin, dieldrin, endrin, mirex, total heptachlor, total chlordane, total DDTs, total PCBs, and total toxaphenes) in the eggs of selected waterbird species from different locations around the city: Little Egret (Egretta garzetta) and Chinese Pond Heron (Ardeola bacchus) from Mai Po Village, Great Egret (Ardea alba) and Black-crowned Night Heron (Nycticorax nycticorax) from A Chau, and Chinese Pond Heron (A. bacchus) from Ho Sheung Heung. The mean concentrations of total PCBs and total DDTs ranged from 191-11,100 ng g(-1) lipid and 453-49,000 ng g(-1) lipid, respectively. Recent exposure of waterbirds to technical chlordane was found in Hong Kong. The risk characterization demonstrated potential risks to birds associated with exposure to DDE, which was found to cause a reduction in survival of young in Hong Kong Ardeids based on the endpoint in the risk assessment.
authors: Jiangsu Academy of Environmental Science, No. 241 Fenghuang West Road, Nanjing 210036, People's Republic of China.
authors: Yuan
authors: Y
authors: Wang
authors: Margaret B
authors: MB
authors: Murphy
authors: James C W
authors: JC
authors: Lam
authors: Liping
authors: L
authors: Jiao
authors: Captain C L
authors: CC
authors: Wong
authors: Leo W Y
authors: LW
authors: Yeung
authors: Paul K S
authors: PK
authors: Lam
mesh_terms: D000452:Aldrin / Q000378:metabolism; D000818:Animals; D001717:Birds / Q000378:metabolism*; D002706:Chlordan / Q000378:metabolism; D003634:DDT / Q000378:metabolism; D004026:Dieldrin / Q000378:metabolism; D004732:Endrin / Q000378:metabolism; D004784:Environmental Monitoring; D004785:Environmental Pollutants / Q000378:metabolism*; D004787:Environmental Pollution / Q000706:statistics & numerical data; D006533:Heptachlor / Q000378:metabolism; D006581:Hexachlorobenzene / Q000378:metabolism; D006723:Hong Kong; D006843:Hydrocarbons, Chlorinated / Q000378:metabolism; D008917:Mirex / Q000378:metabolism; D010063:Ovum / Q000378:metabolism*; D010575:Pesticides / Q000378:metabolism*; D011078:Polychlorinated Biphenyls / Q000378:metabolism*; D018570:Risk Assessment
chemical_list: D004785:Environmental Pollutants; D006843:Hydrocarbons, Chlorinated; D010575:Pesticides; D002706:Chlordan; D006581:Hexachlorobenzene; D006533:Heptachlor; D003634:DDT; D011078:Polychlorinated Biphenyls; D004026:Dieldrin; D004732:Endrin; D000452:Aldrin; D008917:Mirex