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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2002.6
- 수록면
- 57 - 68 (12page)
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초록· 키워드
Atmospheric dry deposition fluxes and size segregated concentrations of particulate metal elements were measured at four sites in Kunpo, a small city in the Seoul metropolitan area in Korea. At each site, aerosol samples were collected by dry deposition plates, a cascade impactor, and a coarse particle rotary impactor during four sampling periods. At all sites, the average fluxes of metals measured during daytime were higher than nighttime fluxes due to higher wind speeds and higher ambient concentrations during daytime. The average fluxes of crustal elements (Al, Ca) were 1 ~ 2 orders of magnitude higher than anthropogenic elements (As, Cd, Cu, Mn, Ni, Pb, and Zn). The daytime fluxes of Al and Ca were between 90 and 12000 μg m^-2 day^-1, and the nighttime fluxes of Al and Ca were between 20 and 2200 μg m^-2 day^-1. The daytime fluxes of Pb, a typical anthropogenic element, were between 20 and 160 μg m^-2 day^-1, and the nighttime fluxes of Pb were between ND and 100 μg m^-2 day^-1. Also the ambient metal concentrations during daytime were higher than nighttime. Based on a dust emission estimation study in Kunpo, it was found that dust emissions during daytime are higher than nighttime. The concentrations of crustal elements were higher than anthropogenic elements. The distributions of heavy metals were mainly in small particles (D_p ≤ 9 μm). The fraction of crustal elements in the large particles (D_p > 9 μm) were higher than anthropogenic elements.
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참고문헌
참고문헌 신청최근 본 자료
UCI(KEPA) : I410-ECN-0101-2009-539-012102893
