2020 Volume 55 Issue 2 Pages 92-99
We investigated the volatile organic compounds in the Tokyo Bay area for the purpose of estimating the source areas of aromatics and alkenes that significantly affect the photochemical reaction in the southern Kanto region. As a result of comparing the distance-weighted emissions by the PRTR data and the concentration ratio of the volatile organic compounds, both data were in good agreement. These results indicated that the concentrations and concentration ratios of the volatile organic compounds were influenced by the nearby sources and wind directions in the Tokyo Bay area. The wind directions with the highest alkene concentration ratio at each point were consistent with the 1,3-butadiene source region. The sources of the 1,3-butadiene exist in the coastal areas of Kawasaki and Ichihara. It was suggested that major alkenes, such as ethylene and propylene, were also emitted from the same area.
