한국대기환경학회지 (Journal of Korean Society for Atmospheric Environment)

  • 제20권6호
  • /
  • Pages.729-738
  • /
  • 2004
  • /
  • 1598-7132(pISSN)
  • /
  • 2383-5346(eISSN)
한국대기환경학회 (Korean Society for Atmospheric Environment)
권호 표지

광화학 상자모델과 기체/입자 평형모델을 이용한 서울ㆍ수도권의 계절별 질산염 농도 변화

Seasonal Variation of Nitrate in the Greater Seoul Area Using a Photochemical Box Model and a Gas/Aerosol Equilibrium Model

  • 이시혜 (한국과학기술연구원 대기자원연구센터) ;
  • 김영성 (한국과학기술연구원 대기자원연구센터) ;
  • 김용표 (이화여자대학교 환경학과) ;
  • 김진영 (한국과학기술연구원 대기자원연구센터)
  • 발행 : 2004.12.01
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초록

Seasonal variation of major inorganic ions in the greater Seoul area was estimated using a photochemical box model and a gas/aerosol equilibrium model with emphasis on semi -volatile nitrate. Pollutant emission was determined by season by comparing the predicted concentration with the measurement one obtained for a year from the late 1996. The results showed that particulate nitrate was the highest in summer but about 40% of total nitrate was present in the gas phase. This was due to volatilization at high temperature since ammonia was sufficient to neutralize all nitrate regardless of season. As relative humidity in summer was higher than the deliquescence point, particulate ion concentration with water was two times higher than that in other season. So called ‘NOx disbenefit’ indicating increase in particulate ion concentration with decrease in NOx emission was evident especially in winter.

키워드

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