北京と東京における都市大気エアロゾル中の炭素成分の特徴 Carbonaceous Components of Atmospheric Aerosols in Beijing and Tokyo

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著者

    • 高橋 克行 TAKAHASHI Katsuyuki
    • 国立環境研究所環境研究基盤技術ラボラトリー National Institute for Environmental Studies, Laboratory of Intellectual Fundamentals for Environmental Studies
    • 森 育子 MORI Ikuko
    • 国立環境研究所環境研究基盤技術ラボラトリー National Institute for Environmental Studies, Laboratory of Intellectual Fundamentals for Environmental Studies
    • 西川 雅高 [他] NISHIKAWA Masataka
    • 国立環境研究所環境研究基盤技術ラボラトリー National Institute for Environmental Studies, Laboratory of Intellectual Fundamentals for Environmental Studies
    • 全 浩 QUAN Hao
    • 日中友好環境保全センター Sino-Japan Friendship Center for Environmental Protection

抄録

Beijing and Tokyo are both megacities. As the raw material ratios on the fundamental energy for each city function are different, the major sources of aerosols in each city must be different. In this study, we compared the compositions of carbonaceous materials and the ratios of stable carbon isotopes (δ<SUP>13</SUP>C) of soot in aerosols collected in both megacities. The ratio of organic carbon (OC) to elemental carbon (EC) in atmospheric aerosols in Beijing showed seasonal variation, whereas the OC/EC ratio showed little seasonal variation in Tokyo. The δ<SUP>13</SUP>C of the atmospheric aerosols in Beijing was -24.0 ± 0.3 ‰ in the heating period (November to March) reflecting the high contribution of particles derived from coal combustion, and its value was -25.1±0.6 ‰ in the non-heating period (April to October) when contributions from sources other than coal combustion increased. On the other hand, the δ<SUP>13</SUP>C of the atmospheric aerosols in Tokyo was approximately constant throughout the year at -25.1 ± 0.1 ‰. Because there are clear differences between the δ<SUP>13</SUP>C of the atmospheric aerosols in the winter and spring seasons in Beijing and Tokyo, we consider this to be a good index for examining long-range transport aerosols.

収録刊行物

  • エアロゾル研究 = Journal of aerosol research  

    エアロゾル研究 = Journal of aerosol research 23(3), 194-199, 2008-09-20 

    日本エアロゾル学会

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各種コード

  • NII論文ID(NAID)
    10021919221
  • NII書誌ID(NCID)
    AN10041511
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09122834
  • NDL 記事登録ID
    9654656
  • NDL 雑誌分類
    ZP5(科学技術--化学・化学工業--化学工学)
  • NDL 請求記号
    Z17-1062
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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