Stable isotope compositions of organic compounds in extraterrestrial and terrestrial materials

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  • 宇宙地球物質に含まれる有機化合物の同位体組成に関する研究
  • ウチュウ チキュウ ブッシツ ニ フクマレル ユウキ カゴウブツ ノ ドウイタイ ソセイ ニ カンスル ケンキュウ

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Abstract

Stable isotopic compositions of organic matters have been studied to investigate their sources and formation processes for various natural samples including meteorites, sediments and biological materials. In particular, compound-specific isotope analysis is a powerful means to distinguish kinetic and thermodynamic isotope effects for a series of PAH homologues in meteorite and exhaust samples as well as to clarify geochemical cycles of lipid biomarkers and their carbon and hydrogen sources associated with different metabolic pathways in sedimentary and biological samples. The compound-specific multi-isotope analysis will further provide better understanding for origins and occurrence of organic compounds in natural environments.

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