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Forms and transformations of selenium in soil.

Research Project

Project/Area Number 03660071
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 土壌・肥料
Research InstitutionKyoto Prefectural University

Principal Investigator

YAMADA Hidekazu  Kyoto Prefectural University, Faculty of Agriculture, Lecturer, 農学部, 講師 (60094405)

Project Period (FY) 1991 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1993: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1992: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1991: ¥1,400,000 (Direct Cost: ¥1,400,000)
KeywordsSelenium / Soil / Forms of soil selenium / Elemental selenium / Selenocyanate ion / Soluble selenium / Trimethylselenonium ion / 土壌セレン / ジメチルセレン
Research Abstract

1)A method for quantitative speciation of selenium (Se) in soil was developed and Se in soil was classified into five fractions : organic Se contained in humic acid, organic Se with high molecular weight in fulvic acid, inorganic Se(IV), inorganic Se(VI), and organic Se with low molecular weight such as selenoamino acids. Several soils were examined using this method, it was found that more than 50% of the total Se in the soils was in the forms of organic Se.
2)Transformations of Se contained in soil by incubation and heating were studied. No remarkable temporal changes in the forms of soil Se were found by incubating soils under flooded condition for about 6 weeks. On heating soils, organic Se in the soil decreased and inorganic Se(IV) formed with increasing the heating temperature. The inorganic Se(IV) formed gradually sublimated with heating at temperature above 300 C.
3)A method was developed for the selective determination of elemental Se in soil. Formation of elemental Se in the soil incubated in waterlogged condition for about 3 weeks was confirmed by the method. The elemental Se formed was estimated to be transformed from inorganic Se(IV) contained in the soil.
4)Total and soluble Se contents in the soils collected at Ishigaki, Kume, and Miyako Islands of Okinawa prefecture were determined.

Report

(4 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • 1991 Annual Research Report
  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] Y.Kang,N.Nozato,K.Kyuma,and H.Yamada: "Forms of selenium in paddy soil" Soil Sci.Plant Nutr.36. 475-482 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Y.Kang,H.Yamada,K.Kyuma,and T.Hattori: "Speciation of selenium in soil" Soil Sci.Plant Nutr.39. 331-337 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Yamada,T.Miyamura,A.Yasuda,T.Hattori,and K.Yonebayashi: "Determination of trimethylselenonium ion and its behavior in soil" Soil Sci.Plant Nutr.40. 49-56 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 山田秀和: "(解説)土壌中のセレンの分布と挙動" ぶんせき. (印刷待). (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Kang, Y., Nozato, N., Kyuma, K.and Yamada, H.: "Forms of selenium in paddy soil" Soil Sci.Plant Nutr.36. 475-482 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Kang, Y., Yamada, H., Kyuma, K., and Hattori, T.: "Speciation of selenium in soil" Soil Sci.Plant Nutr.39. 331-337 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Yamada, H., Miyamura, T., Yasuda, A., Hattori, T., and Yonebayashi, K.: "Determination of trimethylselenonium ion and its behavior in soil" Soil Sci.Plant Nutr.40. 49-56 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Yamada, H.: "Distribution and behavior of selenium in soils" Bunseki-Kagaku. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Yamada,T.Miyamura,A.Yasuda,T.Hattori,K.Yonebayashi: "Determination of trimethylselenonium ion and its behavior in soil" Soil Sci.Plant Nutr.40. 49-56 (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] 山田,秀和: "(解説)土壌中のセレンの分布と挙動" ぶんせき. (印刷待). (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] Kang Y.Yamada H. and Kyuma K.: "Speciation of selenium species in soil" Soil Science and Plant Nutrition.

    • Related Report
      1992 Annual Research Report
  • [Publications] YAMADA H.: "Behavior of trimethylselenonium ion in soils(仮題)" Soil Sci.Plant Nutri.

    • Related Report
      1991 Annual Research Report

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Published: 1991-04-01   Modified: 2016-04-21  

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