Chemical characterization of insoluble macromolecules (Kerogen) from marine and lacustrine sediments –Molecular distribution of aliphatic dicarboxylic acids in alkaline KMnO₄ oxidation products–

• MORINAGA Shigeo

  Department of Chemistry, Faculty of Science, Tokyo Metropolitan University (Present address) Department of Materials Science and Technology, Faculty of Engineering, Toin University of Yokohama

• ISHIWATARI Ryoshi

  Department of Chemistry, Faculty of Science, Tokyo Metropolitan University

• MACHIHARA Tsutomu

  Department of Chemistry, Faculty of Science, Tokyo Metropolitan University (Present address) Technology Research Center, Japan National Oil Corporation

Bibliographic Information

Other Title

• 海洋および湖沼堆積物中の不溶性有機物(ケロジェン)のキャラクタリゼーション –アルカリKMnO₄酸化分解生成物の脂肪族ジカルボン酸の分子分布–
• 海洋および湖沼堆積物中の不溶性有機物(ケロジェン)のキャラクタリゼーション--アルカリKMnO4酸化分解生成物の脂肪族ジカルボン酸の分子分布
• カイヨウ オヨビ コショウ タイセキブツチュウ ノ フヨウセイ ユウキブツ ケ

Abstract

Insoluble macromolecules (kerogen) were isolated from 7 marine and 10 lacustrine sediment samples and subjected to alkaline KMnO₄ oxidation, followed by analysis of organic acids in the oxidation products. The major compounds consist of aliphatic C₄-C₁₅α, ω-dicarboxylic acids, n-C₇-C₂₈ monocarboxylic acids and benzene mono-to-polycarboxylic acids. The α, ω-dicarboxylic acids from lacustrine kerogens have a maximum at C₈ or C₉. Whereas those from marine ones show a shoulder in this carbon range, have a maximum at C₄ and decrease with increasing carbon number. This difference in the relative abundance of C₄ and C₈, C₉ α, ω-dicarboxylic acids may be due to different precursory materials in the different environments. This result is in accordance with our previous findindg, suggesting strongly that a portion of the chemical structures of kerogens from marine and lake environments is generally different from each other. A mathematical expression was proposed to visualize the feature of molecular distribution of α, ω- dicarboxylic acids from kerogens. In addition, it is shown by both alkaline CuO oxidation and KMnO₄ experiments that polymerized structure of polyhydroxy acids can be one of the precursors for α, ω-dicarboxylic acids from kerogens.

Journal

• Chikyukagaku

  Chikyukagaku 30 (1), 35-45, 1996-04-15

  The Geochemical Society of Japan

Keywords

• marine and lake kerogen
• KMnO₄
• oxidation
• α, ω-dicarboxylic acids
• precursory materials

Details

• CRID: 1390001205742482176
• NII Article ID: 110008679911
• NII Book ID: AN00141280
• DOI: 10.14934/chikyukagaku.30.35
• ISSN: 21885923
• ISSN: 03864073
• NDL BIB ID: 3946325
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3946325
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • CiNii Articles
• Abstract License Flag: Disallowed