title: Seasonal variation of chemical composition in fine particles at Gosan, Korea.
abstract: PM2.5 aerosol samples were collected at Gosan in Jeju Island during six intensive measurement periods between November 2001 and August 2003. In order to investigate the chemical composition of fine particles, major ion components, trace elements, and elemental and organic carbon were analyzed. Quite different seasonal characteristic in the chemical composition of fine particles was observed. The concentration of most secondary aerosol components showed a summer minimum and a winter maximum with higher correlation between them at Gosan. This fact clearly reveals the possibility of long-range transport of such pollutants in winter. On the other hand, OC and EC had the highest concentration and good correlation with ion components, such as K+, Ca2+ in fall. It means that biomass burning could significantly influence the ambient fine carbonaceous particulate in fall, which was primarily long-range transported.
authors.affiliation: Atmospheric Chemistry Division, Department of Air Quality Research, National Institute of Environmental Research (NIER), Environmental Research Complex, Kyeongseodong, Seogu, Incheon 404-170, Republic of Korea.
authors.forename: J S
authors.initials: JS
authors.lastname: Han
authors.forename: K J
authors.initials: KJ
authors.lastname: Moon
authors.forename: B J
authors.initials: BJ
authors.lastname: Kong
authors.forename: S J
authors.initials: SJ
authors.lastname: Lee
authors.forename: J E
authors.initials: JE
authors.lastname: Kim
authors.forename: Y J
authors.initials: YJ
authors.lastname: Kim
mesh_terms: D000336:Aerosols / Q000032:analysis*; D000392:Air Movements; D000393:Air Pollutants / Q000032:analysis*; D002118:Calcium / Q000032:analysis; D002244:Carbon / Q000032:analysis; D002412:Cations; D004784:Environmental Monitoring; D007723:Korea; D009930:Organic Chemicals / Q000032:analysis*; D010316:Particle Size; D011188:Potassium / Q000032:analysis; D012621:Seasons; D013997:Time Factors; D014131:Trace Elements / Q000032:analysis*
chemical_list: D000336:Aerosols; D000393:Air Pollutants; D002412:Cations; D009930:Organic Chemicals; D014131:Trace Elements; D002244:Carbon; D011188:Potassium; D002118:Calcium