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
SCIE
SCOPUS
- Title
- 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
- Authors
- Choi, SD; Baek, SY; Chang, YS; Wania, F; Ikonomou, MG; Yoon, YJ; Park, BK; Hong, S
- Date Issued
- 2008-10-01
- Publisher
- AMER CHEMICAL SOC
- Abstract
- To assess levels and patterns of polychlorinated bipheryls (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.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 Sigma 205PCB (excluding three mono-CBs and PCB-11) was five times higher in the Arctic (95 pg.m(-3)) than in the Antarctic (19 pg.m(-3)). Levels of Sigma 9PCB at Ny-Alesund were similar to 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.
- Keywords
- PERSISTENT ORGANIC POLLUTANTS; POLYBROMINATED DIPHENYL ETHERS; HISTORICAL EMISSION INVENTORY; AROMATIC-HYDROCARBONS PAHS; NORTH-AMERICAN ATMOSPHERE; GLOBAL DISTRIBUTION MODEL; 209 PCB CONGENERS; AMBIENT AIR; SAMPLERS; ISLAND
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/22484
- DOI
- 10.1021/ES801004P
- ISSN
- 0013-936X
- Article Type
- Article
- Citation
- ENVIRONMENTAL SCIENCE & TECHNOLOGY, vol. 42, no. 19, page. 7125 - 7131, 2008-10-01
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