The Thermo Scientific TSQ Quantum GC™ triple quadrupole mass spectrometer can be used to analyze steroid biomarkers -"molecular fossils" - in crude oil. Selected reaction monitoring (SRM) and electron ionization (EI) MS/MS offer  excellent selectivity, which allows for accurate determination of biomarker information despite the complex hydrocarbon matrix. The TSQ Quantum GC is able to effectively characterize these biomarkers, providing critical information on source, thermal maturity and secondary alteration processes that are revealed through subtle variations in isomeric distribution of these trace-level components.

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