Elemental Composition of PM2.5 Particulate with a 3-Stage DRUM Sampler during Spring and Summer Seasons in Urban Area of Gwangju, Korea

3-Stage DRUM 샘플러를 이용한 광주 도심지역의 봄철과 여름철 PM2.5 원소적 조성 비교

  • Ryu S.Y. (Department of Environmental science and engineering, Gwangju Institute of science and Technology, Advanced Environmental Monitiring Research Chnter) ;
  • Kim Y.J. (Department of Environmental science and engineering, Gwangju Institute of science and Technology, Advanced Environmental Monitiring Research Chnter)
  • 류성윤 (광주과학기술원 환경공학과, 환경모니터링신기술연구센터) ;
  • 김영준 (광주과학기술원 환경공학과, 환경모니터링신기술연구센터)
  • Published : 2005.12.01

Abstract

To characterize the elemental composition of fine particles in urban area, $PM_{2.5}$ was collected by a 3-stage DRUM impactor at Gwangju during spring and summer. Time and size resolved concentrations for 19 trace elements were obtained by synchrotron X-Ray fluorescence analysis. Trace elements in summer were distributed in smaller size range compared to those in spring. Almost trace element concentrations in fine particles were highly increased during the Asian dust. In spring, soil elements such as Si, K, Ca, Ti and Fe had low enrichment factors indicating the dominant influence of soil dust. However, all elements had high enrichment factors in summer implying that these elements could be emitted from the anthropogenic sources. Factor analysis was conducted with the elemental composition data in order to identify anthropogenic sources of aerosols in urban area during spring and summer. Fine particles in spring have several sources such as soil dust originating from China continental region, coal and oil combustion, biomass burning, sea salt, ferrous and nonferrous metal sources. On the other hand, fine particles in summer were influenced by road dust, gasoline vehicle as well as coal and oil combustion, sea salt, ferrous and nonferrous metal sources.

Keywords

References

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