分子化石分析:使用三重四极杆GC-MS / MS表征原油类固醇生物标志物
Because biomarker concentrations decrease with increasing thermal maturity, light oils contain only a low concentration of detectable biomarkers, and in consequence require instrumentation of highest selectivity and sensitivity. The information of source, thermal maturity, and secondary alteration processes are furthermore often revealed by only subtle variationsin the isomeric distribution of such trace components. GC-MS/MS using the Thermo Scientific TSQ Quantum XLS isthe premier analytical method for the sensitive characterization of “molecular fossil” biomarkers in crude oil.