Abstract
The results of (hydro)-sulphurization at low T on 1-decane are reported and the C isotope fractionation effects of this reaction identified. 1-decane becomes enriched in (super 13) C with increasing yields of sulphurization while the S compounds formed are initially depleted in (super 13) C compared to the starting substrate. The average C isotopic fractionation of the reaction on the two C atoms involved is approximately 200/00. Sedimentary S compounds do not show this fractionation effect due to a different sulphurization reaction with different isotope effects or functionalized lipids may have been fully sulphurized.