Author(s)

Hui-Kang Kim, Choong Min Kang, Hyun Gu Yeo, Kwang Jin Kim and Young Sunwoo

Abstract

Temporal variation of secondary air pollutants HzO: and HNOj in Seoul, Korea Hui-Kang Kim, Choong Min Kang, Hyun Gu Yeo, Kwang Jin Kim and Young Sunwoo Kon-Kuk University, Department of Environmental Engineering 93-1 Mojin-dong, Kwangjin-ku, Seoul, Korea 143-701 E-Mail: ysunwoo@kkucc. konkuk. ac. kr Abstract Concentrations of gas-phase secondary air pollutants, hydrogen peroxide and nitric acid, were analyzed for one week every season during 1997 in Seoul, Korea at six sites already measuring such pollutants as ozone and nitric dioxide. Both H]O2 and HNOs had the highest values in the summer with I^O] showing more variability due to a few anomalous values. Diurnal variations of HNOj and HNC>2 showed mostly 'textbook' behavior with respect to photochemistry other than some ill-behaved situations suggesting the importance of other factors such as meteorology and emissions. Correlations with other pollutants and meteorological factors also were mostly consistent with photoc

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