活性フミン酸の構造に関する研究　ＩＩＩ　　ナトリウムアマルガムによる還元生成物の｀１３´Ｃ‐，｀１´Ｈ‐ＮＭＲによる構造解析

DOI

書誌事項

タイトル別名
  • Studies on the structure of peat humic acid. (III). Structural analyses of reduction products from peat humic acid with sodium amalgam by 13C-, 1H-NMR spectroscopy.
  • Structural Analyses of Reduction Products from Peat Humic Acid with Sodium Amalgam by <SUP>13</SUP>C-, <SUP>1</SUP>H-NMR Spectroscopy
  • ナトリウムアマルガムによる還元分解生成物の<SUP>13</SUP>C-, <SUP>1</SUP>H-NMRによる構造解析

抄録

Ethanol-soluble reduction products of peat humic acid have been characteriz-ed by means of 13C-and 1H-NMR spectroscopic technique.<BR>The reduction of peat humic acid with sodium amalgam was carried out in 0.5 N sodium hydroxide aqueous solution at 100°C t for 4hr in a stream of nitrogen. And thus two parts of the ethanol-soluble humic acid and the ethanol-insoluble humic acid were obtained, as a result of a above reaction; the total yield of the ethanol-soluble humic acid namely fulvic acid in four reductive reactions was 43% based on the original peat humic acid. The 13C-NMR spectra of fulvic acid were measured in 26% deuteriodimethylformamide solution with tetramethylsilane as an internal reference.<BR>By using the results of 13C-NMR spectra on a combination with 1H-NMR results, the structural parameters such as fa, Hau/Car and σ were calculated.<BR>It was concluded that the fulvic acid obtained by reduction of peat humic acid, the ratio of aromatic carbon atoms to all carbon in about 50%, and the acids have mainly mono-ring systems with a few of naphthalene units in the aromatic constitution.

収録刊行物

  • 燃料協会誌

    燃料協会誌 67 (4), 231-240, 1988

    一般社団法人 日本エネルギー学会

キーワード

詳細情報 詳細情報について

  • CRID
    1390001204296755456
  • NII論文ID
    130004016810
  • DOI
    10.3775/jie.67.231
  • ISSN
    2185226X
    03693775
  • 本文言語コード
    ja
  • データソース種別
    • JaLC
    • Crossref
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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