書誌事項
- タイトル別名
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- Chemical characterization of organic geopolymers (kerogens) in river and lake sediments
- カセン オヨビ コテイ タイセキブツチュウ ノ コウブンシ ユウキブツ ケロー
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抄録
Insoluble organic materials (kerogens) isolated from lake (L. Haruna) and river (R. Tamagawa) sediments were characterized by a chemical oxidation (KMnO4) 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.
収録刊行物
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- 地球化学
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地球化学 15 (2), 60-69, 1981
一般社団法人日本地球化学会
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詳細情報 詳細情報について
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- CRID
- 1390001205743531520
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- NII論文ID
- 110008679718
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- NII書誌ID
- AN00141280
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- ISSN
- 21885923
- 03864073
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- NDL書誌ID
- 2427459
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可