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Construction of model structure of humic substances toward the elucidation of their stability in the environment

Research Project

Project/Area Number 20380043
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Plant nutrition/Soil science
Research InstitutionNagoya University

Principal Investigator

WATANABE Akira  Nagoya University, 生命農学研究科, 教授 (50231098)

Project Period (FY) 2008 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥16,380,000 (Direct Cost: ¥12,600,000、Indirect Cost: ¥3,780,000)
Fiscal Year 2010: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2009: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2008: ¥12,220,000 (Direct Cost: ¥9,400,000、Indirect Cost: ¥2,820,000)
Keywords腐植物質 / フミン酸 / 炭素貯留 / 炭素循環 / 腐植化度 / 固体^<13>C NMR / 難分解性 / 糖 / X線回折プロファイル / 炭素官能基組成
Research Abstract

Toward an elucidation of immobilization mechanism of humic substances in th environment based on the establishment of their average chemical structure model, structural units especially condensed aromatic components and composition of functional groups in humic acids (HAs) were investigated with regard to the degree of humification and then ^<14>C age. The 11 band analysis of X-ray diffraction (XRD) profile succed in finding 0.24-1.68 nm C-layer planes corresponding to 4- to 3-ring condensed aromatic structure. Their mean size and contents increased with increasing degree of humification and relative abundance of aromatic C in HA molecules. Fourie transform-ion cyclotron mass spectrometry (FT-ICR/MS) detected 11-69 compounds of a series of linearly fused and net-like condensed aromatic acids with max 24 biphelyl-type compounds. The number and peak intensity of those components were also larger in the HAs with a greater degree of humification. Based on the relation to ^<14>C age, it was concluded that the relative enrichement of condensed aromatic structures with ≧5 rings contributes to the enhancement of recalcitrance of HAs in soil. Quantification of C functional groups using solide-state ^<13>C NMR spectroscopy was improved by introducing phase-adjusted spinning-sideband technique.

Report

(4 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report
  • 2008 Annual Research Report
  • Research Products

    (17 results)

All 2011 2010 2009 2008

All Journal Article (3 results) (of which Peer Reviewed: 1 results) Presentation (14 results)

  • [Journal Article] Size distribution of condensed aromatic rings in various soil humic acids.2011

    • Author(s)
      Ikeya, K., Hikage, T., Arai, S., Watanabe A
    • Journal Title

      Organic Geochemistry 42(1)

      Pages: 55-61

    • Related Report
      2010 Final Research Report
  • [Journal Article] Size distribution of condensed aromatic rings in various soil humicacids2011

    • Author(s)
      keya, K., Hikage, T., Arai, S., Watanabe, A.
    • Journal Title

      Organic Geochemistry

      Volume: 42 Pages: 55-61

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 近年の腐植物質分析法の展開-6.固体高分解能NMR法2010

    • Author(s)
      渡邉彰
    • Journal Title

      土肥誌 82(4)

      Pages: 394-401

    • NAID

      110008144209

    • Related Report
      2010 Final Research Report
  • [Presentation] 土壌フミン酸の炭素構造解析-逐次抽出画分間の比較2010

    • Author(s)
      池谷康祐・眞家永光・王光華・渡邉彰
    • Organizer
      日本腐植物質学会第26回講演会
    • Place of Presentation
      筑波大学
    • Year and Date
      2010-11-30
    • Related Report
      2010 Final Research Report
  • [Presentation] 土壌フミン酸の炭素構造解析一逐次抽出画分間の比較2010

    • Author(s)
      辺彰
    • Organizer
      日本腐植物質学会第26回講演会
    • Place of Presentation
      筑波大学
    • Year and Date
      2010-11-30
    • Related Report
      2010 Annual Research Report
  • [Presentation] 土壌フミン酸のFT-ICR MSスペクトル解析2010

    • Author(s)
      池谷康祐・Sleighter R.L.・Hatcher P.G.・渡邉彰
    • Organizer
      日本土壌肥料学会2010年度大会
    • Place of Presentation
      北海道大学
    • Year and Date
      2010-09-09
    • Related Report
      2010 Final Research Report
  • [Presentation] 腐植物質の土壌中における構造的安定性2010

    • Author(s)
      渡邉 彰・越智翔一朗・加藤千鶴・池谷康祐・中村俊夫
    • Organizer
      日本土壌肥料学会2010年度大会
    • Place of Presentation
      北海道大学
    • Year and Date
      2010-09-09
    • Related Report
      2010 Final Research Report
  • [Presentation] 土壌フミン酸のFT-ICRMSスペクトル解析2010

    • Author(s)
      池谷康祐・Sleighter RL・Hatcher PG・渡辺彰
    • Organizer
      日本土壌肥料学会2010年度大会
    • Place of Presentation
      北海道大学(池谷康祐・眞家永光・王光華・渡)
    • Year and Date
      2010-09-09
    • Related Report
      2010 Annual Research Report
  • [Presentation] Relationship between 14C age and structural property of humic acids.2010

    • Author(s)
      渡邉彰, 越智翔一朗, 加藤千鶴, 池谷康祐, 中村俊夫
    • Organizer
      19th World Congress of Soil Science
    • Place of Presentation
      Brisbane、Australia
    • Year and Date
      2010-08-05
    • Related Report
      2010 Final Research Report
  • [Presentation] Relationship between ^<14>C age and structural property of humic acids2010

    • Author(s)
      Watanabe, A., Ochi, S., Kato, C., Ikeya, K., Nakamura, T.
    • Organizer
      19th World Congress of Soil Science
    • Place of Presentation
      Brisbane, Australia
    • Year and Date
      2010-08-05
    • Related Report
      2010 Annual Research Report
  • [Presentation] Structural property responsible for recalcitrant nature of soil organic carbon.2010

    • Author(s)
      渡邉彰
    • Organizer
      International Symposium on Soil Quality and Management of World Mollisols
    • Place of Presentation
      Harbin、China
    • Year and Date
      2010-07-13
    • Related Report
      2010 Final Research Report
  • [Presentation] Structural property responsible for recalcitrant nature of soil organic carbon2010

    • Author(s)
      Watanabe, A.
    • Organizer
      International Symposium on Soil Quality and Management of World Mollisols
    • Place of Presentation
      Harbin, China
    • Year and Date
      2010-07-13
    • Related Report
      2010 Annual Research Report
  • [Presentation] 土壌腐植物質のFT-ICR MSスペクトル解析2009

    • Author(s)
      池谷康祐・Hatcher P.G.・大谷肇・渡邉彰
    • Organizer
      日本腐植物質学会第25回講演会
    • Place of Presentation
      兵庫県立大学
    • Year and Date
      2009-11-25
    • Related Report
      2010 Final Research Report 2009 Annual Research Report
  • [Presentation] 腐植化度の増大とグラファイト様構造の発達:X線回折プロファイルからのアプローチ2008

    • Author(s)
      池谷康祐・斎藤徳之・日影達夫・大谷肇・渡邉彰
    • Organizer
      日本腐植物質学会第24回講演会
    • Place of Presentation
      北海道大学
    • Year and Date
      2008-11-15
    • Related Report
      2010 Final Research Report
  • [Presentation] 腐植化度の増大とグラファイト様構造り発達 : X線回折プロファイルからのアプローチ2008

    • Author(s)
      池谷康祐, 斎藤徳之, 日影達夫, 大谷肇, 渡辺彰
    • Organizer
      日本腐植物質学会
    • Place of Presentation
      北海道大学
    • Year and Date
      2008-11-05
    • Related Report
      2008 Annual Research Report
  • [Presentation] X線回折プロファイルおよび透過型電子顕微鏡観察による土壌フミン酸の縮合芳香族構造の解析2008

    • Author(s)
      池谷康祐・斎藤徳之・日影達夫・大谷肇・渡邉彰
    • Organizer
      日本土壌肥料学会2008年度愛知大会
    • Place of Presentation
      名古屋市立大学
    • Year and Date
      2008-09-09
    • Related Report
      2010 Final Research Report
  • [Presentation] X線回折プロファイルおよび透過型電子顕微鏡観察による土壌フミン酸の縮合芳香族構造の解析2008

    • Author(s)
      池谷康祐, 斎藤徳之, 日影達夫, 大谷肇, 渡辺彰
    • Organizer
      日本土壌肥料学会
    • Place of Presentation
      名古屋市立大学
    • Year and Date
      2008-09-09
    • Related Report
      2008 Annual Research Report

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Published: 2008-04-01   Modified: 2016-04-21  

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