Journal
CHEMOSPHERE
Volume 83, Issue 7, Pages 891-896Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2011.02.073
Keywords
PCBs; Organochlorinated pesticides; Waterbird egg; DDT; Risk assessment
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Funding
- University Grants Committee of the Hong Kong Special Administration Region, China [AoE/P-04/2004]
- CityU Strategic Research Grant [7008035]
- Agriculture, Fisheries and Conservation Department of the Hong Kong SAR Government
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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. 2011 Elsevier Ltd. All rights reserved.
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