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| Titel |
Source apportionment of the particulate PAHs at Seoul, Korea: impact of long range transport to a megacity |
| VerfasserIn |
J. Y. Lee, Y. P. Kim |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 7, no. 13 ; Nr. 7, no. 13 (2007-07-09), S.3587-3596 |
| Datensatznummer |
250005126
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| Publikation (Nr.) |
 copernicus.org/acp-7-3587-2007.pdf |
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| Zusammenfassung |
| Northeast Asia including China, Korea, and Japan is one of the world's
largest fossil fuel consumption regions. Seoul, Korea, is a megacity in
Northeast Asia. Its emissions of air pollutants can affect the region, and
in turn it is also affected by regional emissions. To understand the extent
of these influences, major sources of ambient particulate PAHs in Seoul were
identified and quantified based on measurements made between August 2002 and
December 2003. The chemical mass balance (CMB) model was applied. Seven
major emission sources were identified based on the emission data in Seoul
and Northeast Asia: Gasoline and diesel vehicles, residential coal use, coke
ovens, coal power plants, biomass burning, and natural gas (NG) combustion.
The major sources of particulate PAHs in Seoul during the whole measurement
period were gasoline and diesel vehicles, together accounted for 31% of
the measured particulate PAHs levels. However, the source contributions
showed distinct daily and seasonal variations. High contributions of biomass
burning and coal (residential and coke oven) were observed in fall and
winter, accounting for 63% and 82% of the total concentration of PAHs,
respectively. Since these sources were not strong in and around Seoul, they
are likely to be related to transport from outside of Seoul, from China
and/or North Korea. This implies that the air quality in a mega-city such as
Seoul can be influenced by the long range transport of air pollutants such
as PAHs. |
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