[A-AS22_1PM1] Atmospheric Chemistry

[AAS22-23] Impact of VOC emission from gasoline cars on ozone formation

*Yamada HIROYUKI¹, Satoshi INOMATA², Hiroshi TANIMOTO² (1.National Traffic Safety and Environment Laboratory, 2.National Institute for Environmental Studies)

Keywords:ozone, ozone formation potential, evaporative emissions, gasoline cars, tailpipe emissions

Ozone has been known that it was produced by the atmospheric reactions of volatile organic compounds (VOC) and NOx. The impact of VOC on ozone formation varies species by species. Thus, to evaluate the ozone formation in atmosphere, discussion based of ozone formation potential (OFP) is important.This study discussed VOC emission from gasoline vehicle with OFP. Usually it is though that main source of VOC from vehicles were tailpipe emissions, however our former study suggested that main source from gasoline cars is not tailpipe emissions but evaporative emissions. So in this study, addition to tailpipe emissions, OFP of evaporative emissions were measured.