Abstract
TD/GC/MS analyses of a profile of Victorian brown coal lithotypes are reported. Specifically, weight loss on TD, triterpenoid and diterpenoid hydrocarbons, and trimethylnaphthalene isomers are considered as lithotype differentiators. In this initial use of biomarkers released by thermal desorption to characterise lithotypes, evidence is reported for differences in angiosperm/gymnosperm contributions, variations in higher plant inputs and for distinct variations of bacterial biomass content of the liththotypes. Trimethylnaphthalenes also differentiate coal seams in the samples reported in this study.
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