delta S-34 character of organosulfur compounds in kerogen and bitumen fractions of sedimentary rocks

作者：Grotheer, Hendrik^*; Greenwood, Paul F.; McCulloch, Malcolm T.; Boettcher, Michael E.; Grice, Kliti

来源：Organic Geochemistry, 2017, 110: 60-64.

DOI：10.1016/j.orggeochem.2017.04.005

• Organosulfur compounds
• Stable sulfur isotopes
• Kerogen
• Bitumen
• HyPy
• Hydropyrolysis

Hydropyrolysis (HyPy) of S-containing oil mature rock samples from two geologic settings each produced much higher concentrations of organosulfur compounds (OSCs) compared to their free occurrence in the bitumen. The delta S-34 values of the most abundant OSCs from the kerogen and in the bitumen, were measured by gas chromatography inductively coupled plasma mass spectrometry (GC-ICP-MS). DBT and mDBTs from the HyPy processed kerogen fractions showed a distinct delta S-34 depletion, with delta S-34 values up to 12% lighter than their bitumen occurrence. The different delta S-34 values of OSCs from the kerogen and bitumen fractions is likely reflective of differences in timing of production, reduced sulfur sources or organic sulfurisation mechanism.

• 出版日期2017-8