Document Detail


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.
MedLine Citation:
PMID:  18939536     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
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.
Authors:
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:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Environmental science & technology     Volume:  42     ISSN:  0013-936X     ISO Abbreviation:  Environ. Sci. Technol.     Publication Date:  2008 Oct 
Date Detail:
Created Date:  2008-10-22     Completed Date:  2009-01-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  7125-31     Citation Subset:  IM    
Affiliation:
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.
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MeSH Terms
Descriptor/Qualifier:
Air / analysis*
Air Pollution*
Antarctic Regions
Arctic Regions
Computer Simulation
Environmental Monitoring*
Geography
Korea
Pesticides / analysis*
Polychlorinated Biphenyls / analysis*
Transportation*
Wind
Chemical
Reg. No./Substance:
0/Pesticides; 0/Polychlorinated Biphenyls

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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