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Study of influeces on environmental factors as for mercury methylation in Minamata Bay

Research Project

Project/Area Number 24350080
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypePartial Multi-year Fund
Section一般
Research Field Environmental chemistry
Research InstitutionNational Institute for Minamata Disease

Principal Investigator

MATSUYAMA Akito  国立水俣病総合研究センター, その他部局等, その他 (00393463)

Co-Investigator(Kenkyū-buntansha) YANO Shinichiro  九州大学, 大学院工学研究院, 教授 (80274489)
TADA Akihide  長崎大学, 大学院工学研究科, 教授 (90144328)
NAGANO Masaaki  環境省国立水俣病総合研究センター, 主任研究員 (10393464)
TAI Akira  九州大学, 大学院工学研究院, 特任助教 (20585921)
IWASAKI Kazuhiro  国立環境研究所, 地域環境センター, 主任研究員 (30193717)
稲葉 一穂  麻布大学, その他部局等, 教授 (60176401)
Co-Investigator(Renkei-kenkyūsha) TOMIYASU Takashi  鹿児島大学, 理工学研究科, 教授 (60217552)
Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥18,590,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥4,290,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2013: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2012: ¥10,790,000 (Direct Cost: ¥8,300,000、Indirect Cost: ¥2,490,000)
Keywordsメチル水銀 / 総水銀 / メチレーション / 水俣湾 / 底質 / 水質 / 環境因子 / 溶存態メチル水銀 / 組み合わせ実験 / グルコース / 海水温 / 塩分濃度 / 水槽モデル実験 / 環境要因 / 栄養塩 / 水銀 / 有機化 / 室内実験
Outline of Final Research Achievements

Weighted average total mercury concentration in sediment that is accumulated in current Minamata Bay is 2.3ppm, then a mass of remained mercury in Minamata bay is estimated to 3.4 ton. On the other hand, environmental factors that affected to the dissolved methylmercury concentration in seawater were estimated to temperature, salinity, DO (dissolved oxygen),DOC(dissolved organic carbon). Also,the room experiment that utilized a large aquarium(200L) was performed based on the combination experiment using these environmental factors. The combination experiment as for environmental factors are as follows: Seawater temperature 30℃、15℃,Salinity 3.0%、1.5%. Mercury concentration was 100ng/L( HgCl2 was added). As a result, the dissolved methylmercury concentration increased using the case of 30℃ and 1.5% definitely.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Annual Research Report
  • 2012 Annual Research Report
  • Research Products

    (8 results)

All 2014 2013 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Acknowledgement Compliant: 1 results) Presentation (2 results) Book (1 results) Remarks (2 results)

  • [Journal Article] Reevaluation of Minamata Bay, 25 years after the dredging of mercury-polluted sediments.2014

    • Author(s)
      Matsuyama A, Yano S,Hisano A, Kindaichi M, Sonoda I, Tada A ,Akagi H
    • Journal Title

      Marine Pollution Bulletin

      Volume: 89 Pages: 112120-112120

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] 水俣湾における底泥輸送とバロクリニック構造との関係の数値モデルによる検討2014

    • Author(s)
      矢野真一郎,川瀬颯人,久野彰大,Herawaty RIOGILANG,松山明人,多田彰秀
    • Journal Title

      土木学会論文集 B2(海岸工学)

      Volume: 70 Pages: 416420-416420

    • NAID

      130004706905

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 水俣湾における海水中懸濁態総水銀と浮遊懸濁物の粒度分布との関係について2013

    • Author(s)
      矢野真一郎,久野彰大,川瀬颯人,松山明人,田井明,Herawaty RIOGILANG,多田彰
    • Journal Title

      土木学会論文集B2(海岸工学)

      Volume: 69 Pages: 1081-1085

    • NAID

      130004550961

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Presentation] Reconfirmation of mercury methylation in seawater column based on the continuous mercury monitoring at Minamata Bay for 2 years2013

    • Author(s)
      Akito Matsuyama etal
    • Organizer
      ICMGP - International Conference on Mercury as a Global Pollutant
    • Place of Presentation
      Edinburgh, Scotland
    • Related Report
      2013 Annual Research Report
  • [Presentation] Field Observations on Dynamic Behaviors of Mercury and Water Quality in Shallow Water2013

    • Author(s)
      Akihide Tada etal
    • Organizer
      ICMGP - International Conference on Mercury as a Global Pollutant
    • Place of Presentation
      Edinburgh, Scotland
    • Related Report
      2013 Annual Research Report
  • [Book] 水銀に関する水俣条約と最新対策・技術2014

    • Author(s)
      松山明人,矢野真一郎
    • Total Pages
      311
    • Publisher
      CMC出版
    • Related Report
      2014 Annual Research Report
  • [Remarks] 水俣湾水環境中に存在する水銀の動態とその影響に関する研究

    • URL

      http://www.nimd.go.jp/kenkyu/docs/h25nenpoh.pdf#page=79

    • Related Report
      2014 Annual Research Report
  • [Remarks] 水俣湾水環境中に存在する水銀の動態とその影響に関する研究

    • URL

      http://www.nimd.go.jp/

    • Related Report
      2013 Annual Research Report

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Published: 2012-04-24   Modified: 2019-07-29  

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