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2005 Fiscal Year Final Research Report Summary

The behavior and environmental impact of mercury released through the human activity

Research Project

Project/Area Number 15404003
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section海外学術
Research Field Environmental impact assessment/Environmental policy
Research InstitutionKagoshima University

Principal Investigator

TOMIYASU Takashi  Kagoshima University, Faculty of Science, Associate professor, 理学部, 助教授 (60217552)

Co-Investigator(Kenkyū-buntansha) MATSUYAMA Akito  Kagoshima University, National Institute for Minamata Desease, general manager, 疫学研究部, 室長 (00393463)
IMURA Ryusuke  Kagoshima University, Faculty of Science, Associate professor, 理学部, 助教授 (40284864)
MIYAMOTO Junko  Kagoshima University, Faculty of Science, Associate professor, 理学部, 助教授 (40244222)
OKI Kimihiko  Kagoshima University Museum, Professor, 総合研究博物館, 教授 (90041235)
ANAZAWA Katsuro  Kagoshima University, Faculty of Science, Research Associate, 理学部, 助手 (90325762)
Project Period (FY) 2003 – 2005
Keywordsmercury / mine / speciation / river water / sediment / soil / International co-laboration / Slovenia
Research Abstract

The chemical forms of mercury in water and sediment in Idrijca river were investigated. Fresh river water and sediment samples were collected from 4 locations in 2003, and 5 locations in 2004.
T-Hg, RHg and Hg^0 concentrations in water were 4.8 - 312 ng/l, 0.77 - 164 ng/l and 0.13 - 66.5 ng/l, respectively. The highest concentrations of the individual species were recorded in the sample taken from the nearest point of the mine and their concentrations decreased with distance from the mine. MeHg concentration in river water was 0.058 - 0.588 ng/l and the highest MeHg concentration was observed at a point about 1 km lower leaches of the mine. In order to estimate the release of mercury from sediment into water, sediment was taken from 5 locations with river water in plastic bottles. The bottles were filled with the sample at the sites, brought back to laboratory and stored at room temperature. After 5days, the water overlying sediment in the bottle was separated into three parts, that is, supernatant layer, suspended layer and pore water. Water in suspended layer was used for mercury determination after centrifugation. The supernatant layer and pore water were filtered (0.45 μm Millipore filters) to determine dissolved T-Hg and MeHg. T-Hg and MeHg concentrations in the waters were 2 - 119 times and 19 - 1357 times higher than that in fresh river water, respectively. The observation suggested that the river sediment could become significant source of mercury in river water. To understand the different behavior between MeHg and other mercury species in the river, kinetic investigations will be required.

  • Research Products

    (19 results)

All 2005 2004 2003 Other

All Journal Article (19 results)

  • [Journal Article] A Kinetic Method for the Determination of Copper(II) by its Catalytic Effect on the Oxidation of 3-Methyl-2-benzothiazolinone Hydrazone with Hydrogen Peroxide : A Mechanistic Study2005

    • Author(s)
      T.Tomiyasu
    • Journal Title

      Analytical Sciences 21

      Pages: 917-922

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Low Level Mercury Uptake by Plants from Natural Environments-Mercury Distribution in Solidago altissima L.2005

    • Author(s)
      T.Tomiyasu
    • Journal Title

      Environmental Sciences 12

      Pages: 231-238

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Low Level Mercury Uptake by Plants from Natural Environments - Mercury Distribution in Solidago altissima L.2005

    • Author(s)
      T.Tomiyasu
    • Journal Title

      Environ.Sci. 12

      Pages: 231-238

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] A Kinetic Method for the Determination of Copper(II) by its Catalytic Effect on the Oxidation of 3-Methyl-2-benzothiazolinone Hydrazone with Hydrogen Peroxide : A Mechanistic Stud2005

    • Author(s)
      T.Tomiyasu
    • Journal Title

      Anal.Sci. 21

      Pages: 917-922

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Heavy-metal distribution in river waters and sediments around a "Firefly Village", Shikoku, Japan : application of multivariate analysis2004

    • Author(s)
      K.Anazawa
    • Journal Title

      Analytical Sciences 20

      Pages: 79-84

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Kinetic determination of total iodine in urine and foodstuffs using a mixed acid as a pretreatment agent2004

    • Author(s)
      T.Tomiyasu
    • Journal Title

      Analytical Sciences 20

      Pages: 391-393

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Application of three-demensional mercury cycling model to coastal seas2004

    • Author(s)
      R.Rajar
    • Journal Title

      Ecological Modelling 171

      Pages: 139-155

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Mercury concentration in environmental samples of Malaysia2004

    • Author(s)
      H.Sakamoto
    • Journal Title

      Reports of the Faculty of Science Kagoshima University 37

      Pages: 83-90

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Heavy-metal disitribution in river waters and sediments around a "Firefly Village", Shikoku, Japan : application of multivariate analysis2004

    • Author(s)
      K.Anazawa
    • Journal Title

      Anal.Sci. 20

      Pages: 79-84

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Kinetic determination of total iodine in urine and foodstuffs using a mixed acid as a pretreatment agent2004

    • Author(s)
      T.Tomiyasu
    • Journal Title

      Anal.Sci. 20

      Pages: 391-393

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Mercury concentration in environmental samples of Malaysia2004

    • Author(s)
      H.Sakamoto
    • Journal Title

      Reports of the Faculty of Science Kagoshima University No.37

      Pages: 83-90

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] 緑茶殻およびコーヒー豆殻への水銀吸着能2003

    • Author(s)
      清原 拓二
    • Journal Title

      分析化学 52

      Pages: 887-890

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 水俣湾における底泥動態の現地観測2003

    • Author(s)
      矢野真一郎
    • Journal Title

      海岸工学輸文集 50

      Pages: 1006-1010

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Adsorption of mercury on used tea leaves and coffee beans2003

    • Author(s)
      T.Kiyohara
    • Journal Title

      BUNSEKI KAGAKU 52

      Pages: 887-890

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] The movement of sediment in Minamata Bay2003

    • Author(s)
      S.Yano
    • Journal Title

      WANGAN KOUGAKU RONBUNSHU 50

      Pages: 1006-1010

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Seasonal change and vertical movement of atmospheric mercury at Kagoshima city in relation with Sakurajima Volcano, Japan

    • Author(s)
      T.Tomiyasu
    • Journal Title

      Geochemical Journal (in press)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Spatial variations of mercury in sediment of Minamata Bay, Japan

    • Author(s)
      T.Tomiyasu
    • Journal Title

      Science of the Total Environment (in press)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Seasonal change and vertical movement of atmospheric mercury at Kagoshima city in relation with Sakurajima Volcano, Japan

    • Author(s)
      T.Tomiyasu
    • Journal Title

      Geochem.J (in press)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Spatial variations of mercury in sediment of Minamata Bay, Japan

    • Author(s)
      T.Tomiyasu
    • Journal Title

      Sci.Tot.Environ. (in press)

    • Description
      「研究成果報告書概要(欧文)」より

URL: 

Published: 2007-12-13  

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