Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Size Distribution of Water-Soluble Ionic Components in the Atmospheric Aerosols Collected in Jeju City, Korea

제주시 대기부유부진 중 수용성 이온성분의 입경별 분포특성

  • Hu Chul-Goo (Department of Civil and Environmental Engineering, Cheju National University) ;
  • Song Jeong-Hwa (Department of Environmental Engineering, Graduate School, Cheju National University) ;
  • Lee Ki-Ho (Department of Civil and Environmental Engineering, Cheju National University)
  • 허철구 (제주대학교 해양과학부 토목환경) ;
  • 송정화 (제주대학교 대학원 환경공학과) ;
  • 이기호 (제주대학교 해양과학부 토목환경)
  • Published : 2004.12.01
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Abstract

Atmospheric particulate matters were collected by 8-stage non viable cascade impactor from October 2002 to August at Jeju City. Eight water-soluble ionic components $(Na^+,\;NH_{4}_{+},\;K^+,\;Ca{2+},\;Mg^{2+},\;CI^-,\;NO_{3}^-\;and\;SO_{4}^{2-})$ were analyzed by Ion Chromatography. The concentration of particulate matters and eight water-soluble ionic components were determined to investigate their size distributions. Particulate matters exhibited a tri-modal distribution with peak value around $0.9,\;4.0{\mu}m\;and\;9.5{\mu}m.$ In summer, the last peak value was lower than other season values likely due to particulate matter scavenged by rain water. Four ionic components $(Na^+,\;Ca^{2+},\;Mg^{2+}\;and\;CI^-)$ exhibited a bi-modal distribution in the coarse mode whereas three ionic components $(NH_{4}^+,\;K^+\;and\;SO_{4}^{2-})$ in the fine mode, with maximum peak value around $0.9{\mu}m.\;NO_{3}^-$ was found in both the coarse and the fine mode. The enrichment factor (E.F.) of each ionic components was calculated. Based upon E.F., it is considered that $Na^+,\;CI^-,\;and\;K^+$ in coarse paricle mode were delivered form oceanic source, but other components might have other source origins.

Keywords

References

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