Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Distributions and Behaviors of H2O2 Above the Yellow Sea in the Years Between 2002 and 2004

2002년에서 2004년 동안 서해상공에서 관측된 과산화수소의 농도분포 및 거동

  • Kim Y.M. (Department of Air Quality Research, National Institute of Environmental Research) ;
  • Shin S.A. (Department of Air Quality Research, National Institute of Environmental Research) ;
  • Han J.S. (Department of Air Quality Research, National Institute of Environmental Research) ;
  • Lee M.H. (Department of Earth & Environmental Sciences, Korea University) ;
  • Kim J.A. (Department of Earth & Environmental Sciences, Korea University)
  • 김영미 (종합환경연구단지 내 국립환경연구원 환경진단연구부 대기환경과) ;
  • 신선아 (종합환경연구단지 내 국립환경연구원 환경진단연구부 대기환경과) ;
  • 한진석 (종합환경연구단지 내 국립환경연구원 환경진단연구부 대기환경과) ;
  • 이미혜 (고려대학교 지구환경과학과) ;
  • 김주애 (고려대학교 지구환경과학과)
  • Published : 2005.12.01
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Abstract

Hydrogen peroxide is a reservoir of OH radical which is the powerful oxidant in the atmosphere. Therefore, the status of the oxidizing atmosphere could be reflected on the concentration of $H_{2}O_{2}$. In this study, the distribution of $H_{2}O_{2}$ was determined during the intensive aircraft measurements over the Yellow sea in March, December 2002, April, November 2003 and March, October 2004. Flights covered from $124^{circ}E\;to\;129^{circ}E\;and\;35^{circ}N\;to\;37^{circ}N$, and extending to 3,000 m. The flight patterns were set properly to assess the altitudinal and longitudinal distribution for $H_{2}O_{2}$. $H_{2}O_{2}$ was extracted onto aqueous solution using a continuously flowing glass coil and analyzed by a high performance liquid chromatography (HPLC) accompanied with a fluorescence detector using postcolumn enzyme derivatization. Mixing ratios of $O_{3},\;NO_{x}\;and\;SO_{2}$ were measured in real time by commercial analysis instruments. Along the heights, the maximum concentration of $H_{2}O_{2}$ appeared around 1,500 m then gradually decreased with increasing altitude. The vertical behavior of ozone showed the similar trend to $H_{2}O_{2}$. The mean mixing ratio of $NO_{x}$ was about 2 ppbv and not showed clear vertical distribution patterns. The mean value of was the same as $NO_{x}$ however $SO_{2}$ appeared extreme concentration in low altitude. $H_{2}O_{2}\;and\;O_{3}$ showed even longitudinal distribution however $NO_{x}$ mixing ratio in land ($127^{circ}E$) was much higher than over the sea. $SO_{2}$ rather decreased with increasing longitude. $H_{2}O_{2}$ was in inverse proportion to $NO_{x}$ in spring and summer and $SO_{2}$ in spring, which indicated its significant role to NO and $SO_{2}$ oxidation pathways.

Keywords

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