TY - JOUR
T1 - δ34S character of organosulfur compounds in kerogen and bitumen fractions of sedimentary rocks
AU - Grotheer, Hendrik
AU - Greenwood, Paul F.
AU - McCulloch, Malcolm T.
AU - Böttcher, Michael E.
AU - Grice, Kliti
PY - 2017/8/1
Y1 - 2017/8/1
N2 - 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 δ34S 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 34S depletion, with δ34S values up to 12‰ lighter than their bitumen occurrence. The different δ34S 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.
AB - 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 δ34S 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 34S depletion, with δ34S values up to 12‰ lighter than their bitumen occurrence. The different δ34S 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.
KW - Bitumen
KW - Hydropyrolysis
KW - HyPy
KW - Kerogen
KW - Organosulfur compounds
KW - Stable sulfur isotopes
UR - http://www.scopus.com/inward/record.url?scp=85020734066&partnerID=8YFLogxK
U2 - 10.1016/j.orggeochem.2017.04.005
DO - 10.1016/j.orggeochem.2017.04.005
M3 - Article
AN - SCOPUS:85020734066
SN - 0146-6380
VL - 110
SP - 60
EP - 64
JO - Organic Geochemistry
JF - Organic Geochemistry
ER -