Proceedings of the Korea Air Pollution Research Association Conference (한국대기환경학회:학술대회논문집)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Method development for detecting superoxide/hydroperoxyl radical

  • Kwon, Bum-Gun (Department of Environmental Science and Engineering, Kwangju Institute of Science and Technology (K-JIST)) ;
  • Lee, Jai H. (Department of Environmental Science and Engineering, Kwangju Institute of Science and Technology (K-JIST))
  • Published : 2001.11.01
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Abstract

HO$_2$ radical plays pivotal roles in the tropospheric $O_3$ formation chemistry. This radical oxidizes NO to NO$_2$ and thus HO$_2$ radical can lead to in-situ ozone formation. Numerous methods have been tried to measure concentrations of atmospheric HO$_2$ in gas phase. Detecting methods applied in the air are a chemical amplifier (Cantrell et al., 1996), FAGE (Fluorescence Assay with Gas Expansion) (Hard et al., 1984), and LIF (Laser-induced Fluorescence) (Stevens et al., 1994). These methods have been limited because of low sensitivity and interferences such as $O_3$, NO, and itself (Stevens et al.,1994). (omitted)

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