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- Title
Possible origin of high molecular weight n-alkan-2-ones in jurassic bitumens from the Sichuan Basin in Southwest China.
- Authors
Wu, Yingqin; Wang, Yongli; Lei, Tianzhu; Chang, Jiang; Xia, Yanqing
- Abstract
Lipid extracts from two Sichuan (China) bitumens have been systematically analyzed using gas chromatography-mass spectrometry (GC-MS). These extracts contain C-C n-alkan-2-ones with predominantly odd-carbon number homologs in the Yangba (YB) extracts and with exclusively odd-carbon number homologs in the Penglai (PL) extracts. We suggest that the n-alkan-2-ones with odd numbers of carbon atoms originated due to degradation (cleavage) of fatty acid salts containing one less carbon atom to form methyl and carbonyl radicals, followed by reaction between the latter. The distribution of n-alkan-2-ones with respect to number of carbon atoms can be used to identify the organic matter in sedimentary rocks from which the fatty acid salts were formed.
- Subjects
SOUTHWEST China; LIPIDS; EXTRACTS; GAS chromatography/Mass spectrometry (GC-MS); BITUMEN; FATTY acids; SEDIMENTARY rocks; ORGANIC compounds
- Publication
Chemistry & Technology of Fuels & Oils, 2012, Vol 48, Issue 3, p195
- ISSN
0009-3092
- Publication type
Article
- DOI
10.1007/s10553-012-0358-8