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Polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans in sediments from Hong Kong |
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| Authors: | Müller Jochen F Gaus Caroline Prange Joelle A Päpke Olaf Poon Ka Fai Lam M H W Lam Paul K |
| Institution: | a National Research Centre for Environmental Toxicology, University of Queensland, 39 Kessels Road, Coopers Plain, Qld 4108, Australia b School of Public Health, Griffith University, Nathan, Qld 4111, Australia c Ergo Forschungsgesellschaft mbH, Geierstrasse 1, D-22305, Hamburg, Germany d Department of Biology and Chemistry, Centre for Coastal Pollution and Conservation, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR, China |
| Abstract: | Concentrations of 2,3,7,8-substituted polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) were determined in 14 sediment samples collected from four sites in the Mai Po Marshes Nature Reserve (within a RAMSAR Site) and from another six sites in Victoria Harbour and along the Hong Kong coastline. Elevated levels of PCDDs, and particularly OCDD, were detectable in all samples collected from the Mai Po Marshes and five of the six sites. In contrast to PCDDs, PCDFs were mainly found in sediment samples collected from industrial areas (Kwun Tong and To Kwa Wan) in Victoria Harbour. PCDD/F levels and congener profiles in the samples from the Mai Po Marshes Nature Reserve in particular show strong similarities to those reported in studies which have attributed similar elevated PCDD concentrations to nonanthropogenic PCDD sources. |
| Keywords: | Persistent organic pollutants Mai Po Marshland PCDD/Fs Hong Kong Natural formation |
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