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Research Project

Project/Area Number 18K04413
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 22060:Environmental systems for civil engineering-related
Research InstitutionToyama Prefectural University (2021)
Fukuoka Institute of Technology (2018-2020)

Principal Investigator

Nakazawa Koyomi  富山県立大学, 工学部, 講師 (10626576)

Co-Investigator(Kenkyū-buntansha) 芳賀 弘和  鳥取大学, 農学部, 准教授 (90432161)
永淵 修  福岡工業大学, その他部局等, 客員教授 (30383483)
Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords水銀 / 自由対流圏 / 雲底高度 / 雲頂高度 / 屋久島 / 長距離輸送 / 地衣類 / 蘚苔類 / 大気降下物 / 大気境界層
Outline of Final Research Achievements

Even in very small amounts, mercury (Hg) is neurotoxic to humans and animals. The majority of atmospheric Hg exists as Gaseous Elemental mercury (GEM) , which is less soluble in water and highly volatile compared to the oxidized forms. Because of its low solubility and slow rate of oxidation, GEM has a long residence time in the atmosphere and is transported globally. In order to clarify the dynamics of atmospheric mercury and its deposition, we have installed sequential rain gauge in 1,300 m a.s.l., of Yakushima observatory and Hiruzen forest research site. The fact that the Hg concentration increased when the maximum cloud top elevation exceeded 10 km suggested that clouds progressively acquired gaseous oxidized mercury in the upper free troposphere in convective rain. During frontal rains, the winds increasingly tended to blow from the west the direction of East Asia as the elevation increased, and the GOM concentration in rainfall exceeded that in typhoon rainfall.

Academic Significance and Societal Importance of the Research Achievements

水銀はごく少量でもヒトや生態系に影響をもたらす。2017年には世界における水銀管理の枠組みを進めるための条約 (水銀に関する水俣条約) が発効した。ここでは大気中の水銀と降水中の水銀に着目し研究を進めた。降水中の水銀の挙動については不明な点が多いが、本研究において自由対流圏上部と成層圏下部に存在する大気中水銀が雨滴に取り込まれて地上に沈着することを明らかにした。息の長いフィールドデータから水銀の動態を明らかにしたことに学術的意義がある。また、今後の世界における水銀モデルのパラメータの設定等を行う際にも重要な知見を提供している。世界的における水銀管理に資する科学的知見となり社会的に意義がある。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (24 results)

All 2022 2021 2020 2019 2018

All Journal Article (8 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (16 results) (of which Int'l Joint Research: 9 results)

  • [Journal Article] 都市域から離れた高山で検出されたマイクロプラスチック2022

    • Author(s)
      永淵 修、中澤 暦、篠塚賢一
    • Journal Title

      雪氷

      Volume: 84 (1) Pages: 29-32

    • NAID

      130008160398

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Human health risk assessment of atmospheric mercury inhalation around three artisanal small-scale gold mining areas in Indonesia2021

    • Author(s)
      Koyomi Nakazawa, Osamu Nagafuchi, Tomonori Kawakami, Takanobu Inoue, Rosana Elvince, Koji Kanefuji, Isrun Nur, Mery Napitupulu, Muhammad Basir-Cyio, Hazumu Kinoshita, Ken'ichi Shinozuka
    • Journal Title

      Environmental Science: Atmospheres

      Volume: 1 (16) Issue: 6 Pages: 423-433

    • DOI

      10.1039/d0ea00019a

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 屋久島に飛来する大気汚染物質による陸 水・樹木への影響2021

    • Author(s)
      永淵 修、中澤 暦、篠塚賢一
    • Journal Title

      屋久島学ソサイエティ学会誌

      Volume: 9 Pages: 1-1

    • Related Report
      2021 Annual Research Report
  • [Journal Article] 渓流水のN 同位体比からみた硝酸性 窒素の起源推定2021

    • Author(s)
      篠塚賢一、永淵 修、角階 潤、中澤 暦
    • Journal Title

      屋久島学ソサイエティ学会誌

      Volume: 9 Pages: 1-1

    • Related Report
      2021 Annual Research Report
  • [Journal Article] 屋久島の淀川登山口で観測された降水中水銀濃度とその起源2021

    • Author(s)
      中澤 暦、永淵修、篠塚賢一、横田久里子、手塚賢至、田辺雅博、金藤浩司
    • Journal Title

      屋久島学ソサイエティ学会誌

      Volume: 9 Pages: 1-1

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Risk assessment of fluoride and arsenic in groundwater and scenario analysis for reducing exposure in Inner Mongolia2020

    • Author(s)
      Nakazawa,K., Nagafuchi, O., Otede, U., Chen, J-q., Kanefuji K., Shinozuka, K.
    • Journal Title

      RSC advances

      Volume: 10 Issue: 31 Pages: 18296-18304

    • DOI

      10.1039/d0ra00435a

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Dynamics of Atmospheric Mercury in the Free Troposphere at the Norikura Observatory During the Autumn of 2012 and 20172019

    • Author(s)
      中澤 暦・永淵 修・篠塚賢一 ・木下 弾・西田友規・菱田尚子・三宅隆之
    • Journal Title

      ENVIRONMENTAL SCIENCE

      Volume: 32 Issue: 6 Pages: 182-192

    • DOI

      10.11353/sesj.32.182

    • NAID

      130007753683

    • ISSN
      0915-0048, 1884-5029
    • Year and Date
      2019-11-30
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 屋久島で観測された降水中水銀濃度とその起源2019

    • Author(s)
      中澤 暦、永淵 修、横田久里子、手塚賢至、田辺雅博、金藤浩司
    • Journal Title

      統計数理研究所共同研究リポート 416

      Volume: - Pages: 31-42

    • Related Report
      2018 Research-status Report
  • [Presentation] Mercury contamination in soil caused by the human activities in Antarctica2020

    • Author(s)
      Koyomi Nakazawa, Osamu Nagafuchi, Megumu Tsujimoto, Koji Kanefuji, Satosih Imura.
    • Organizer
      SCAR OSC 2020 online meeting 31 July to 11 August (hobart, Tasmania Australia, online meeting)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Mercury concentration in soil observed around Syowa station, Antarctica2020

    • Author(s)
      Koyomi Nakazawa, Osamu Nagafuchi, Megumu Tsujimoto, Koji Kanefuji, Satosih Imura
    • Organizer
      The 11th Symposium on Polar Science
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] モンゴルにおける地下資源開発による金属汚染とヒト健康リスク2020

    • Author(s)
      中澤 暦、永淵 修、大谷眞二、藤巻晴行、Ch. Javzan、Jamsran Tsogtbaatar
    • Organizer
      鳥取大学乾燥地研究センター 共同利用研究発表会
    • Related Report
      2020 Research-status Report
  • [Presentation] Mercury contamination in soil caused by the human activities in Antarctica2020

    • Author(s)
      Koyomi Nakazawa, Osamu Nagafuchi, Megumu Tsujimoto, Koji Kanefuji , Satoshi Imura
    • Organizer
      SCAR 2020 Open Science Conference
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 湖沼コア堆積物中水銀の分布2019

    • Author(s)
      永淵 修、中澤 暦、篠塚賢一、Neil Rose,Handong Yang, 石川 靖、菅原省吾、深澤達矢
    • Organizer
      陸水学会年会
    • Related Report
      2019 Research-status Report
  • [Presentation] Mercury deposition in Yakushima Island, the world natural Heritage site, Japan2019

    • Author(s)
      Koyomi Nakazawa, Osamu Nagafuchi , Koji Kanefuji , Ken’ichi Shinozuka , Masahiro, Tanabe , Kenshi, Tetsuka
    • Organizer
      International Conference on Mercury as a Global Pollutant 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Observation of TGM in the free troposphere at the summit of Mount Fuji during the summer of 20132019

    • Author(s)
      Osamu Nagafuchi, Ken’ichi Shinozuka, Koyomi Nakazawa, Hazumu Kinoshita,Yuki Nishida, Syungo Kato
    • Organizer
      International Conference on Mercury as a Global Pollutant 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 夏季富士山頂で観測された大気中高濃度水銀の起源解析2019

    • Author(s)
      永淵 修、中澤 暦、篠塚賢一、木下弾,菱田尚子、西田友規、加藤俊吾
    • Organizer
      NPO富士山測候所を活用する会
    • Related Report
      2018 Research-status Report
  • [Presentation] Human Health Risk Assessment of Mercury Caused from Artisanal Small-scale Gold Mining in Indonesia2019

    • Author(s)
      Koyomi Nakazawa,Osamu Nagafuchi,Takanobu Inoue,Tomonori Kawakami, Elvince Rosana, Koji Kanefuji,Kenichi Shinozuka
    • Organizer
      ISM Symposium on Environmental Statistics 2019
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 屋久島で観測された降水中水銀濃度とその起源2018

    • Author(s)
      中澤 暦、永淵 修、横田久里子、手塚賢至、田辺雅博、金藤浩司
    • Organizer
      統計数理研究所共同研究集会 (28-共研 -5003)
    • Related Report
      2018 Research-status Report
  • [Presentation] 自由対流圏における大気中水銀の降水による除去過程及び沈着メカニズム2018

    • Author(s)
      中澤 暦、永淵 修、篠塚賢一
    • Organizer
      地球化学会 年会
    • Related Report
      2018 Research-status Report
  • [Presentation] 2018 年 4 月霧島硫黄山爆発による河川中水銀濃度の流下過程での変化2018

    • Author(s)
      永淵 修、中澤 暦、篠塚賢一
    • Organizer
      地球化学会 年会
    • Related Report
      2018 Research-status Report
  • [Presentation] 急峻な地形が川原 2 号沢の水質形成に与える影響2018

    • Author(s)
      篠塚 賢一 ,永淵 修 ,中澤 暦 ,奥田 青州 ,手塚 賢至,手塚 田津 子,尾坂 兼一,金谷 整一
    • Organizer
      地球化学会 年会
    • Related Report
      2018 Research-status Report
  • [Presentation] Risk analysis of human health among artisanal small-scale gold mining area in Indonesia2018

    • Author(s)
      Kanefuji, K., Nakazawa, K., Nagafuchi, O
    • Organizer
      JSM (the Joint Statistical Meetings) 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] インドネシア・中央スラウェシ州パルにおける小規模金採掘に由来する水銀蒸気とそのヒトへの健康リスクの推定2018

    • Author(s)
      中澤 暦、永淵 修、川上智規、井上隆信、芹川裕加、Basir Cyio, Isrun Nua, Rosana Elvince 、篠塚賢一
    • Organizer
      地球惑星科学連合 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] インドネシアにおける小規模金採掘に由来する水銀汚染とそのヒトへの健康リスク2018

    • Author(s)
      永淵 修、中澤 暦、川上智規、井上隆信、Rosana Elvince, 篠塚賢一
    • Organizer
      地球惑星科学連合 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2024-01-30  

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