Pyrolysis-high resolution gas chromatography and pyrolysis gas chromatography-mass spectrometry of kerogens and kerogen precursors |
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| Authors: | Dik van de Meent Stephen C Brown RPaul Philp Bernd RT Simoneit |
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| Institution: | Department of Chemistry, University of California, Berkeley, CA 94720, U.S.A.;Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90024, U.S.A. |
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| Abstract: | A series of kerogens and kerogen precursors isolated from DSDP samples, oil shales and Recent algal mats have been examined by Curie point pyrolysis-high resolution gas chromatography and gas chromatography-mass spectrometry. This study has shown that the three main types of kerogens (marine, terrestrial and mixtures of both) can be characterized using these techniques. The marine (algal) kerogens yield principally aliphatic products and the terrestrial kerogens yield more aromatic and phenolic products with some n-alkanes and n-alkenes. The yields of n-alkanes and n-alkenes increase and phenols decrease with increasing geologic age, however, pyrolysis-GC cannot be used to characterize the influence of short term diagenesis on the kerogen structure. |
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| Keywords: | Author to whom correspondence should be addressed |
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