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SewonOh,JeanM.Andino 한국대기환경학회 2003 한국대기환경학회지 Vol.19 No.E3
Effects of inorganic aerosols on the kinetics of the hydroxyl radical reactions with selected aliphatic alkanes have been investigated using the relative rate technique. The relative rates in the absence and presence of aerosols were determined for n-butane, n-pentane, n-hexane, n-octane, and n-decane. P-xylene was used as a reference compound. Inorganic aerosols including (NH4)2SO4, NH4NO3, and NaCl aerosols at two different aerosol concentrations that are typical of polluted urban conditions were tested. Total surface areas of aerosols were 1400 (Condition I) and 3400 μm2 cm-3 (Condition II). Significant changes in the relative rates in the presence of the inorganic aerosols were not observed for the n-butane/∙OH, n-pentane/∙OH, n-hexane/∙OH, n-octane/∙OH, and n-decane/∙OH reactions versus p-xylene/∙OH reaction. These results suggest that the promoting effects depend on the semiconducting property of the aerosols and the nature of the organic compounds.