Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Formation and Growth of Atmospheric Aerosols by Water Vapor Reactions in an Indoor Smog Chamber

스모그 챔버에서 수분 반응에 의한 대기 에어로졸의 생성 및 성장

  • 김민철 (한국과학기술연구원 대기자원연구센터) ;
  • 배귀남 (한국과학기술연구원 대기자원연구센터) ;
  • 문길주 (한국과학기술연구원 대기자원연구센터) ;
  • 박주연 (이화여자대학교 환경학과)
  • Published : 2004.04.01
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Abstract

Aerosol formation and growth by water vapor reactions were investigated in a 2.5 -㎥ indoor smog chamber filled with the unfiltered ambient air. The relative humidity of test ambient air was elevated at 59～64% or 84～88% by adding water vapor. The aerosol number size distribution and the concentrations of $O_3$, NO, NO$_2$, and SO$_2$ were measured during the experiments. The $O_3$ and NO$_2$ gases were well reacted with the water vapor at high relative humidity of 84～88%, and the reaction rates of these gases seemed to be decreased at low relative humidity of 59～64%. The formation and condensational growth phenomena of ambient aerosols by water vapor reactions were observed in a Teflon bag, depending strongly on the initial particle size distribution. The water vapor reactions might be affected by the contents of oxidants produced by photochemical reactions under sunlight.

Keywords

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