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Gold distribution and behavior in the marine environment revealed by state of the art analytical techniques

Research Project

Project/Area Number 16K12589
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Environmental dynamic analysis
Research InstitutionJapan Agency for Marine-Earth Science and Technology

Principal Investigator

AMAKAWA Hiroshi  国立研究開発法人海洋研究開発機構, 次世代海洋資源調査技術研究開発プロジェクトチーム, 特任主任技術研究員 (60260519)

Research Collaborator KASHIWABARA Teruhiko  
FUKAMI Yusuke  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords金濃度 / キレート樹脂 / 海水 / マンガンファイバー / マンガンノジュール / 金 / ICP質量分析計 / マンガンクラスト / 環境分析 / 地球化学 / 分析科学 / 岩石・鉱物・鉱床学 / 海洋資源
Outline of Final Research Achievements

We developed a technique to determine gold concentration of marine environmental samples using a state-of-the-art chelate resin and applied it to some samples. The concentrations of standard sample of ferromanganese nodule, which is enriched in various precious metals including gold, showed scattered values. This implies a heterogeneous distribution of gold in the sample. We also determined seawater gold concentration using a manganese oxide coated fiber concentrated in gold in seawater, and found that the value was the same order to the previously reported data.

Academic Significance and Societal Importance of the Research Achievements

金は誰にとってもなじみ深い元素で、その希少性より高価で取引されている。しかしながら、海洋を含めた地球表層における濃度分布に関する情報は乏しい。本研究は、金濃度が極めて低い海水などの海洋環境試料の定量値を最新の手法を駆使することで決定する試みである。得られた定量値は、従来の報告値と矛盾しないものであったが、従来法と比較しより簡便な方法で行うことができた点が意義深い。

Report

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

    (2 results)

All 2018

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (1 results)

  • [Journal Article] Origin of neodymium in the surface layer of ferromanganese crusts2018

    • Author(s)
      Hiroshi Amakawa, Yusuke Fukami, Junji Torimoto, Tatsuo Nozaki, Koichi Iijima, Akira Usui, Katsuhiko Suzuki
    • Journal Title

      Proceedings of the Twenty-eighth (2018) International Ocean and Polar Engineering Conference (ISOPE)

      Volume: 1 Pages: 81-85

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] 拓洋第5海山周辺海域のNd濃度と同位体比の分布2018

    • Author(s)
      天川裕史、深海雄介、鳥本淳司、野崎達生、飯島耕一、臼井朗、鈴木勝彦
    • Organizer
      2018 年度日本地球化学会年会
    • Related Report
      2018 Annual Research Report

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

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