Polycyclic aromatic hydrocarbons in Australian coals II. Novel tetracyclic components from Victorian brown coal

Alan L. Chaffee, Michael G. Strachan, R. B. Johns

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Abstract

Gas chromatographic-mass spectrometric (GC-MS) analysis of a polycyclic aromatic hydrocarbon (PAH) fraction of a Victoria brown coal sample has revealed the presence of a novel series of tetracyclic triterpenoid derived components. The base peak of their mass spectra, at m/z 169, suggests an 8, 14-seco (C-ring cleaved) structural configuration with the triterpenoid derived A- and B-rings fully aromatized. Photochemically induced or acid-catalyzed processes are seen as two possibilities to account for the diagenetic formation of these compounds.

Original languageEnglish
Pages (from-to)2037-2043
Number of pages7
JournalGeochimica et Cosmochimica Acta
Volume48
Issue number10
DOIs
Publication statusPublished - Oct 1984
Externally publishedYes

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