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Dynamics of atmospheric humic-like substances and their impact on environment

Research Project

Project/Area Number 16K21427
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Environmental dynamic analysis
Environmental impact assessment
Research InstitutionIshikawa Prefectural University (2017-2018)
Waseda University (2016)

Principal Investigator

Katsumi Naoya  石川県立大学, 生物資源環境学部, 講師 (40769767)

Research Collaborator Okochi Hiroshi  早稲田大学, 創造理工学部, 教授
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsフミン様物質 / エアロゾル / 自由対流圏 / NMR / XPS / FT-ICR MS / HULIS / 富士山 / 雲水 / 安定同位体比
Outline of Final Research Achievements

From observations in central Tokyo, the origin and generation processes of HULIS differed depending on the season, and the chemical structure features also changed. Observations at the free troposphere showed that the background concentration was almost uniform globally, and that the concentration increased when air masses came from the continent along with the CO and O3. The quantitative value of HULIS varied depending on the resin used for separation. Therefore, in order to make a direct comparison between researchers or between observation sites, it is essential to establish an analytical method that serves as an international standard.

Academic Significance and Societal Importance of the Research Achievements

大気中フミン様物質(HULIS)は有害大気汚染物質の輸送や気候変動に大きな影響を及ぼすと考えられていますが、国内における実態は不明な点が多く残されています。本研究では大気観測と実験室内における分析を駆使した結果、大気中HULISの生成プロセスは季節によって異なり、それに伴い化学構造も変化することを見出しました。今後、化学構造と大気中での機能の関係を精査することで、HULISが大気環境に与える影響を正確に評価することができると考えています。その一方で、HULISの分析手法が研究者間で異なっているため、観測結果を直接比較することができないという大きな課題も本研究を通じて浮き彫りとなりました。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (9 results)

All 2018 2017 2016

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (8 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Chemical structural features of humic-like substances (HULIS) in urban atmospheric aerosols collected from central Tokyo with special reference to nuclear magnetic resonance spectra2018

    • Author(s)
      Katsumi, N., Miyake, S., Okochi, H.
    • Journal Title

      Asian Journal of Atmospheric Environment

      Volume: 12 Issue: 2 Pages: 153-164

    • DOI

      10.5572/ajae.2018.12.2.153

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] 大気中フミン様物質の動態・起源・環境リスクに関する研究 (1)2018

    • Author(s)
      光川彩夏・大河内博・勝見尚也・田中伸幸・宮崎あかね・松木篤
    • Organizer
      大気環境学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 大気中フミン様物質の化学構造特性および動態解析(2)2018

    • Author(s)
      勝見尚也・大河内博・大坂一生・宮里朗夫
    • Organizer
      環境化学討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Investigation of quantitative method for atmospheric humic-like substances and its application to atmospheric aerosols in the free troposphere2017

    • Author(s)
      Naoya Katsumi, Shuhei Miyake, Hiroshi Okochi
    • Organizer
      2017 Symposiumu on Atmospheric Chemistry and Physics at Mountain Site
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 大気中フミン様物質の定量方法の検討と自由対流圏大気エアロゾルへの適用2017

    • Author(s)
      勝見尚也・三宅修平・大河内博
    • Organizer
      第26回環境化学討論会
    • Related Report
      2017 Research-status Report
  • [Presentation] 東京都心における大気エアロゾル中フミン様物質の動態と化学構造特性2017

    • Author(s)
      勝見尚也,三宅修平,大河内博
    • Organizer
      日本腐植物質学会
    • Place of Presentation
      名城大学
    • Related Report
      2016 Research-status Report
  • [Presentation] 大気中フミン様物質の化学構造特性と動態解明2016

    • Author(s)
      勝見尚也,大河内博
    • Organizer
      大気環境学会
    • Place of Presentation
      北海道大学
    • Year and Date
      2016-09-07
    • Related Report
      2016 Research-status Report
  • [Presentation] Inter-annual variation of humic-like substances concentration in cloud waters and aerosols at the summit of Mt. Fuji2016

    • Author(s)
      Katsumi, N., Yamanokoshi, E., Okochi, H., Ogata, H.
    • Organizer
      7th International Conference on Fog, Fog Collection and Dew
    • Place of Presentation
      ポーランド
    • Year and Date
      2016-07-24
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] 自由対流圏高度に位置する富士山頂における雲水および大気エアロゾル中フミン様物質の動態2016

    • Author(s)
      勝見尚也・大河内博・山之越恵理・嵯峨俊太郎・緒方裕子
    • Organizer
      環境化学討論会
    • Place of Presentation
      朱鷺メッセ(新潟市)
    • Year and Date
      2016-06-08
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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