河川および湖底堆積物中の高分子有機物(ケロージェン)の化学的特徴  [in Japanese] Chemical characterization of organic geopolymers (kerogens) in river and lake sediments  [in Japanese]

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Abstract

Insoluble organic materials (kerogens) isolated from lake (L. Haruna) and river (R. Tamagawa) sediments were characterized by a chemical oxidation (KMnO<sub>4</sub>) method and their compositions of amino acids, carbohydrates and fatty acids were determined. The formation process of kerogen was discussed on the basis of the results. (1) Amino acids, carbohydrates and fatty acids comprise 6.8 to 10.7% (wt%) of kerogens, which correspond to 1.8-3.0% of the total organic matter (TOM) in sediments. (2) The enrichment factors (a concentration of a component in the kerogen divided by a concentration of the component relative to TOM in the sediment) of amino acids, carbohydrates and fatty acids are: carbohydrates (0.04-0.08)<amino acids (0.37-0.58)<fatty acids (1.23-2.50). This result shows that a significant amount of fatty acids is enriched in the kerogens. (3) A possible mechanism for the formation of kerogens in recent sediments is as follows: at the first stage, kerogen-nucleus is formed through a Maillard Reaction from carbohydrates and amino acids during deposition and in sediment. In parallel with this reaction, hydrophobic compounds as fatty acids incorporate into the kerogen-nucleus.

Journal

  • Chikyukagaku

    Chikyukagaku 15(2), 60-69, 1981

    The Geochemical Society of Japan

Cited by:  5

Codes

  • NII Article ID (NAID)
    110008679718
  • NII NACSIS-CAT ID (NCID)
    AN00141280
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    0386-4073
  • NDL Article ID
    2427459
  • NDL Source Classification
    ME34(水文学--陸水)
  • NDL Source Classification
    ZM41(科学技術--地球科学)
  • NDL Call No.
    Z15-645
  • Data Source
    CJPref  NDL  NII-ELS  J-STAGE 
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