HR: 1340h
AN: A33D-1555    [Abstracts]
TI: Formaldehyde distributions and its relation to ozone formation in Seoul metropolis during the summer of 2004 and 2005
AU: Hwang, J
EM: jhhwang@lgi.co.kr, hjh0212@naver.com
AF: LG International Corp, LG Twin Towers, 20, Yoido-dong, Youngdungpo-gu, Seoul, 150-606, Korea, Republic of
AU: Kim, J
AF: Korea University, Korea University, Anam-dong, Sungbuk-gu, Seoul, 136-701, Korea, Republic of
AU: * Han, J
EM: kutt4@naver.com
AF: Korea University, Korea University, Anam-dong, Sungbuk-gu, Seoul, 136-701, Korea, Republic of
AU: Lee, M
EM: meehye@korea.ac.kr
AF: Korea University, Korea University, Anam-dong, Sungbuk-gu, Seoul, 136-701, Korea, Republic of
AU: Lee, G
AF: Hankuk University of Foreign Studies, 89 Wangsan-li, Mohyun-myun, Choin-gu, Yongin, 449-791, Korea, Republic of
AU: Shin, B
AF: Korea Meteorological Administration, 460-18 Shindaebang 2dong, Gisangchung road 45, Dongjak-gu, Seoul, 156-720, Korea, Republic of
AB: Carbonyl compounds and other reactive gases were measured at the campus of Korea University, Seoul, South Korea in June of 2004 and 2005. Carbonyl measurement was performed by using DNPH-derivative method and automated carbonyl measurement system in 2004 and 2005, respectively and they provided reliable data. Also, meteorological parameters were measured. Daily max concentrations of measured species were examined with HCHO and O3. The correlations in 2004 were relatively clearer that 2005 and this was resulted from the different phase of each wind plots of carbonyl and other gases. In 2004 and 2005, HCHO variations during the whole period were very similar with temperature. In addition, correlation between max HCHO and max photochemical reactivity (= K*VOC concentrations) showed an improved one than when max HCHO and max VOCs. O3 also showed good correlations with other gases. HCHO plays a significant role in O3 production, but O3 production was limited by the NO2 concentrations. In addition, meteorological parameters also influenced the amount of O3 produced during the daytime. This indicates that meteorological parameters should be considered to investigate the photochemical evolution process and that formation of HCHO and O3 in urban area is under influence of photochemical reactivity and NO2 concentrations, respectively.
DE: 0317 Chemical kinetic and photochemical properties
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting