金属イオンと錯形成する腐植物質官能基のATR-FTIR法による<i>in situ</i>分析  [in Japanese] In situ ATR-FTIR Spectroscopy for Functional Groups of Humic Substances Complexing with Metal Ions  [in Japanese]

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Abstract

金属イオンとの錯形成に関わる腐植物質官能基についての情報を赤外吸収スペクトルから得るため, 赤外光の全反射を利用するATR(Attenuated Total Reflection)法を用いることにより, 水溶液に溶存させた状態での赤外吸収スペクトル測定について検討した.<br> ATR法により, 金属イオンとの錯形成によって腐植物質の赤外吸収スペクトルに生じる変化を確認できた.また, 粉体試料を用いる従来の赤外吸収スペクトル測定では困難であった錯形成速度についての情報, pHや元素濃度など液性の変化に呼応した官能基の情報が取得できた.これらの結果から, 錯形成に伴う腐植物質官能基の状態変化に関する赤外吸収スペクトル情報を<i>in situ</i>で得るために, ATR法が適用できる可能性が見出された.

  To obtain structural information on functional groups of humic substances complexing with metal ions, infrared (IR) spectral analysis of the humic substances dissolving in aqueous solutions has been studied by ATR (Attenuated Total Reflection) method. <br>  By using the ATR method, IR spectral shifts of humic substance due to a complexation with metal ions were observed. The observation provided with information on complexation kinetics, and on characteristics of functional groups depending on solvent properties, such as pH and solute concentrations. These information was difficult to be obtained by conventional FTIR spectroscopy using powdered humic substances. The obtained results show that IR spectral shifts on the functional groups of the humic substances complexed with metal ions could be possibly characterized <i>in situ</i> by using the ATR-FTIR spectroscopy.

Journal

  • Journal of Nuclear Fuel Cycle and Environment

    Journal of Nuclear Fuel Cycle and Environment 9(1), 29-34, 2002

    Division of Nuclear Fuel Cycle and Environment, Atomic Energy Society of Japan

Codes

  • NII Article ID (NAID)
    130003378459
  • NII NACSIS-CAT ID (NCID)
    AA11891371
  • Text Lang
    JPN
  • Article Type
    特集
  • ISSN
    1884-7579
  • NDL Article ID
    7927338
  • NDL Source Classification
    ZN36(科学技術--原子力工学・工業)
  • NDL Call No.
    Z16-B456
  • Data Source
    NDL  J-STAGE 
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