Particle and Aerosol Research Vol. 2, No. 3, 4, December 2006 |
ISSN : 1738-8716 (Print) ISSN : 2287-8130 (Online) |
Seasonal characteristics of dry deposition for particulate PAHs at Seoul
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Abstracts
Dry deposition for particulate PAHs was measured using a knife-edge dry deposition plate in June and
December 2003 at Seoul to characterize their seasonal variation. Ambient particulate PAHs concentrations were
also measured concurrently. The measured dry deposition flux of particulate PAHs (¥Ò13-PAHs) was 13.4¡¾5.46 ¥ìg
m-2 day-1. The measured flux were higher in winter than in summer. Overall dry deposition velocity of PAHs
calculated based on the dry deposition fluxes and ambient concentrations was 0.70¡¾0.50 cm s-1 which is similar to
that obtained in the previous studies. The overall dry deposition velocity for individual PAH compounds generally
decreased with increasing molecular weight of PAHs. Comparing the previous results of particulate PAHs fluxes in
Seoul, the range of dry deposition fluxes was from 5.3 to 17.3 mg m-2 day-1 and the results from Seoul were
generally comparable to those other urban areas in the world.
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