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Developing a method for detecting improper mercury trade flow into countries that have artisanal and small-scale gold mining (ASGM) activities

Research Project

Project/Area Number 21K17922
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 64050:Sound material-cycle social systems-related
Research InstitutionKyoto University (2022)
National Institute for Environmental Studies (2021)

Principal Investigator

CHENG YINGCHAO  京都大学, 工学研究科, 特定研究員 (40885836)

Project Period (FY) 2021-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords水銀 / 小規模金採掘(ASGM) / 水銀貿易 / 検出法 / 水俣条約
Outline of Research at the Start

水俣条約により、水銀および水銀を使用した製品の製造・輸出入が規制されている。しかし、水銀の主用途、且つ、排出源・放出源である小規模金採掘(ASGM)の規制は明示されていない。不適切・違法な操業の存在が指摘されるASGMを介した水銀流通は不明瞭であり、国際的な水銀の管理を阻害する恐れがある。本課題の目的は、ASGM実施国への不適切な水銀貿易の検出手法の開発と実証分析のデータ整備である。独自に国際貿易データを整備した上で、全球的な水銀フローを解明し、ASGM実施国リストを整備する。そして、ASGM実施国に共通する水銀フロー特性、活動量との関係に注目し、不適切な水銀貿易の検出手法を確立する。

Outline of Final Research Achievements

Mercury distribution balance was calculated for 231 countries/regions from 1995 through 2018. Thirty-nine small-scale gold mining (ASGM) implementing countries were listed, and the amount of mercury used for ASGM purposes was estimated from 2010 to 2018. The status of ratification and accession to the Minamata Convention and submission of National Action Plans for those countries were collected.
Based on the above, a method to detect and determine inappropriate mercury trade through ASGM-implementing countries was developed and applied to ASGM countries in 2010-2018. The presence of inappropriate trade was suggested in some countries/regions. The results were published in six international conference presentations and two international academic journals. Beyond the objectives, we hosted an international academic conference, provided the results to the Secretariat of the Minamata Convention and the Ministry of the Environment, and created content for disseminating research results.

Academic Significance and Societal Importance of the Research Achievements

学術的意義は、本手法により不適切な水銀貿易の検出・判定が可能である。手法開発の過程でより詳細な水銀排出量を含むASGMの「採掘活動量」に関わるデータベースを使用することが可能である。また、国際学会の開催により、水銀の課題に関する議論の場を提供することが出来た。
社会的意義は、水銀流通の把握や水銀管理の改善に役立てることが可能である。また、水俣条約事務局等で作成を進める報告書への知見を提供できた。そして、水銀に関する問題や課題をわかりやすく伝える情報発信用コンテンツを作成できた。

Report

(3 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • Research Products

    (17 results)

All 2022 2021 Other

All Int'l Joint Research (4 results) Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (7 results) (of which Int'l Joint Research: 6 results) Remarks (3 results) Funded Workshop (1 results)

  • [Int'l Joint Research] University of British Columbia(カナダ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Adolfo Ibanez University(チリ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Adolfo Ibanez University(チリ)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] University of British Columbia(カナダ)

    • Related Report
      2021 Research-status Report
  • [Journal Article] Examining the inconsistency of mercury flow in post-Minamata Convention global trade concerning artisanal and small-scale gold mining activity2022

    • Author(s)
      Cheng Yingchao、Nakajima Kenichi、Nansai Keisuke、Seccatore Jacopo、Veiga Marcello M.、Takaoka Masaki
    • Journal Title

      Resources, Conservation and Recycling

      Volume: 185 Pages: 106461-106461

    • DOI

      10.1016/j.resconrec.2022.106461

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A review of gold production, mercury consumption, and emission in artisanal and small-scale gold mining (ASGM)2022

    • Author(s)
      Cheng Y., Watari T., Seccatore J., Nakajima K., Nansai K., Takaoka M.
    • Journal Title

      Resources Policy

      Volume: 81 Pages: 103370-103370

    • DOI

      10.1016/j.resourpol.2023.103370

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Gold production and mercury consumption from artisanal and small-scale mining2022

    • Author(s)
      Cheng, Y., Watari, T., Nakajima, K., Nansai, K.; Seccatore, J., Veiga M.M.
    • Organizer
      EcoBalance 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Inconsistencies of mercury flow in global trade concerning artisanal and small-scale gold mining activity2022

    • Author(s)
      Cheng, Y., Nakajima, K., Nansai, K., Seccatore, J., Veiga, M.M., Takaoka, M.
    • Organizer
      Partner Event of EcoBalance 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A Comprehensive Review on Gold Production, Mercury Consumption and Emission in Artisanal and Small-scale Gold Mining (ASGM)2022

    • Author(s)
      Cheng, Y., Watari, T., Seccatore, J., Nakajima, K., Nansai, K.
    • Organizer
      ICMGP Mercury as a global pollutant
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 黄金の輝きの影-金の採掘と水銀の不適切な流通-2022

    • Author(s)
      程英超, 中島謙一
    • Organizer
      国立環境研究所公開シンポジウム2022・未来につなぐ世界との絆-持続可能な地球を目指して-
    • Related Report
      2022 Annual Research Report
  • [Presentation] Global mercury trade and use for artisanal and small-scale gold mining (ASGM)2021

    • Author(s)
      Cheng Y., Nakajima K., Nansai K.
    • Organizer
      International Industrial Ecology Day 2021 (2021)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Detection of improper mercury flow to countries with artisanal and small-scale gold mining (ASGM) activities2021

    • Author(s)
      Cheng Y., Nakajima K., Nansai K., Jacopo S.
    • Organizer
      icRS 2021 International Conference on Resource Sustainability (Virtual) (2021)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Evaluation of improper mercury trade flow to the artisanal and small-scale gold mining (ASGM) sector2021

    • Author(s)
      Cheng Y., Nakajima K., Nansai K.
    • Organizer
      World Resources Forum (2021)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Remarks] サイエンスアニメーション

    • URL

      https://mfi.nies.go.jp/movie/NIESN_1_13_Video_Aug_23_2022.mp4

    • Related Report
      2022 Annual Research Report
  • [Remarks] MercuryLegacyinArtisanalandSmall-ScaleGoldMining

    • URL

      https://www.ecobalanceconference.org/conference/2022/pdf/Hglegacy_20220908_1.pdf

    • Related Report
      2022 Annual Research Report
  • [Remarks] 零細および小規模金採掘における水銀に関する国際的な情報交換を行うイベント開催について(報告)

    • URL

      https://www.nies.go.jp/whatsnew/20221129/20221129.html

    • Related Report
      2022 Annual Research Report
  • [Funded Workshop] Partner Event of EcoBalance 2022: Mercury Legacy in Artisanal and Small-Scale Gold Mining2022

    • Related Report
      2022 Annual Research Report

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Published: 2021-04-28   Modified: 2024-01-30  

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