| Passive air sampling of polychlorinated biphenyls and organochlorine pesticides at the Korean Arctic and Antarctic research stations: implications for long-range transport and local pollution. | |
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MedLine Citation:
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PMID: 18939536 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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To assess levels and patterns of polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) in polar regions, XAD-resin based passive air samplers were deployed for one year at the Korean polar research stations at Ny-Alesund, Norway (2005-2006) and King George Island, Antarctica (2004-2005). Backward trajectories suggest that these stations are affected by long-range transport from source regions in Northern Europe and Russia and the southern tip of South America, respectively. Relatively high levels of PCB-11, averaging 60 pg x m(-3), were observed in Antarctica, suggesting an unusual source of PCB-11 to the Southern Hemisphere. Reflecting the hemispheric distribution of global PCB emissions, the average level of sigma205PCB (excluding three mono-CBs and PCB-11) was five times higher in the Arctic (95 pg x m(-3)) than in the Antarctic (19 pg x m(-3)). Levels of sigma9PCB at Ny-Alesund were similarto those reported for other Arctic sites, while levels at King George Island were lower than at other sites on the Antarctic Peninsula but 1 order of magnitude higher than background levels measured at a more remote Antarctic site. Light homologues were predominant in all samples (except for one Arctic sample), consistent with the hypothesis of global fractionation and predictions of long-range transport potential. Dominance of heavy PCBs on the roof of the main building at Ny-Alesund and a concentration gradient with distance from the main building at King George Island strongly indicated the influence of local sources. OCP levels were also influenced by long-range transport but not by local sources. This study highlights the feasibility of using passive air sampling to assess both long-range transport and local pollution in remote regions. |
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Authors:
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Sung-Deuk Choi; Song-Yee Baek; Yoon-Seok Chang; Frank Wania; Michael G Ikonomou; Young-Jun Yoon; Byong-Kwon Park; Sungmin Hong |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Environmental science & technology Volume: 42 ISSN: 0013-936X ISO Abbreviation: Environ. Sci. Technol. Publication Date: 2008 Oct |
Date Detail:
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Created Date: 2008-10-22 Completed Date: 2009-01-12 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0213155 Medline TA: Environ Sci Technol Country: United States |
Other Details:
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Languages: eng Pagination: 7125-31 Citation Subset: IM |
Affiliation:
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School of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), San 31, Hyoja-dong, Nam-gu, Pohang 790-784, Republic of Korea. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Air
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analysis* Air Pollution* Antarctic Regions Arctic Regions Computer Simulation Environmental Monitoring* Geography Korea Pesticides / analysis* Polychlorinated Biphenyls / analysis* Transportation* Wind |
| Chemical | |
Reg. No./Substance:
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0/Pesticides; 0/Polychlorinated Biphenyls |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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