Investigation of organic compounds released from kerogen in Neogene sediments of the Shinjo basin by heating experiments using a TG-GC/MS system

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概要

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• Kerogens in sediments of different burial depth over a stratigraphic sequence in Neogene Shinjo sedimentary basin were heated from room temperature to 800℃ under a helium flow by a thermogravimetric analyzer (TG). Compounds released by the thermal decomposition of kerogen were introduced into and analyzed by a gas chromatograph-mass spectrometer (GC/MS). Two hundred and forty-nine compounds were identified and are mainly aliphatic and aromatic hydrocarbons. A release profile of each compound from kerogen with increasing heating temperature was obtained by TG-MS. In general, thermal release of compounds started around 350℃ which shifted to 450℃ with increasing burial depth of kerogen and ended roughly at 550℃. The release-peak width tended to become narrower with increasing burial depth of kerogen, which reflects the loss of a thermally more labile fraction of kerogen in sediments during diagenesis.

• 日本有機地球化学会の論文
• 2000-06-30

著者

• Mita Hajime

  Department of Chemistry, University of Tsukuba

• Mita H

  Department Of Chemistry University Of Tsukuba

• Oba Masahiro

  Department of Chemistry, University of Tsukuba

• Shimoyama Akira

  Department of Chemistry, University of Tsukuba

• Mita Hajime

  Department Of Chemistry University Of Tsukuba

• Shimoyama Akira

  Kochi Gakuen College

• Oba Masahiro

  Department Of Chemistry University Of Tsukuba

• Shimoyama Akira

  Department Of Chemistry University Of Tsukuba

• Shimoyama Akira

  Institute Of Chemistry The University Of Tsukuba

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