Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Long-term Characteristics of PM2.5 and Its Metallic Components in Chuncheon, Korea

춘천시 대기 중 PM2.5 및 금속성분의 장기간 농도 특성

  • Byun, Jin-Yeo (Department of Environmental Science, College of Natural Science, Kangwon National University) ;
  • Cho, Sung-Hwan (Department of Environmental Science, College of Natural Science, Kangwon National University) ;
  • Kim, Hyun-Woong (Department of Environmental Science, College of Natural Science, Kangwon National University) ;
  • Han, Young-Ji (Department of Environmental Science, College of Agriculture and Life Sciences, Kangwon National University)
  • 변진여 (강원대학교 환경학과) ;
  • 조성환 (강원대학교 환경학과) ;
  • 김현웅 (강원대학교 환경학과) ;
  • 한영지 (강원대학교 농업생명과학대학 환경융합학부)
  • Received : 2018.03.05
  • Accepted : 2018.04.13
  • Published : 2018.06.30
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Abstract

In this study, $PM_{2.5}$ samples were collected during approximately 3 years in Chuncheon, a small residential and tourist city, in Korea. The average $PM_{2.5}$ concentration was $26.9{\mu}g/m^3$, exceeding the annual national air quality standard. $PM_{2.5}$ showed typical seasonal variation, having higher concentration in winter and lower concentration in summer. Sixteen metallic elements in $PM_{2.5}$ were also analyzed, and K was the highest contributor especially in late fall and winter. In addition, K considerably increased for the top 10% of $PM_{2.5}$ samples and showed the highest correlation coefficient with $PM_{2.5}$ among all other metallic elements. These results suggest that the combustion of agricultural residue and other biomass, the major source of K was likely to be important to high $PM_{2.5}$ concentration events in this city. Crustal elements including Al, Fe, Si, Ti, Mg showed high concentration in spring while Cr, Cu and Ni were relatively consistent throughout a year. Principal component analysis was used to trace the sources, and soil re-suspension, combustion of biomass and fossil fuels, and asphalt concrete production were identified as the main sources of $PM_{2.5}$.

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References

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