Effects of an eruption on Miyake Island on the behavior or air pollutants and chemical components of rainwater in Kyoto

DOI PDF Web Site 被引用文献8件 参考文献49件
  • Yamada Etsu
    Department of Chemistry and Material Technology, Kyoto Institute of Technology
  • Nishimura Yoshiaki
    Department of Chemistry and Material Technology, Kyoto Institute of Technology
  • Furuya You
    Department of Chemistry and Material Technology, Kyoto Institute of Technology
  • Huang Song-Nan
    Department of Chemistry and Material Technology, Kyoto Institute of Technology
  • Fuse Yasuro
    Center for Environmental Science, Kyoto Institute of Technology

書誌事項

タイトル別名
  • Effects of an Eruption on Miyake Island on the Behavior of Air Pollutants and Chemical Components of Rainwater in Kyoto

この論文をさがす

抄録

Continuous measurements of air pollutants (NOx, SO2, O3) by passive samplers and chemical components of rainwater in Kyoto were made from 1996 to 2002. An eruption on Miyake Island and urban climate changes were found to greatly affect the seasonal changes of air pollutants and chemical components of rainwater in 2000 and 2001. Several peaks of NO2 concentrations at mountains around the Kyoto basin occurred in the spring and summer of 2000 and 2001. The higher NO2 concentration in the summer of 2000 and 2001 may be attributed to the formation of a temperature-inversion layer. Atmospheric SO2 concentrations became abruptly higher in September 2000, and the concentration range of atmospheric SO2 in mountains around the Kyoto basin was 1.0–7.9 ppb from September 2000 to July 2001, which was about two-times higher than that until 1999. These results suggest that a large quantity of SO2 discharge by the eruption on Miyake Island may have affected the increase of atmospheric SO2 concentrations in Kyoto. The O3 concentrations in the summer of 2000 and 2001 were higher than that until 1999. The cause may be O3 production by a photochemical reaction with an increase of anthropogenic NOx in the warm months after 2000. The concentration of gaseous H2O2 was very low when the SO2 content was high in September, 2000, and in June and July, 2001, which may have been due to a large quantity of SO2 discharge that occurred as a result of the eruption on Miyake Island. These results indicate that gaseous H2O2 may largely determine the formation of aerosol sulfate in the warm months. Thus, the increase of anthropogenic or natural SO2 emission may significantly affect the increase of SO42− concentration in rainwater.

収録刊行物

被引用文献 (8)*注記

もっと見る

参考文献 (49)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ