**3. The LmPy-GC/MSMS system performance**

An efficient and appropriate sample preparation method is necessary for good work involving the LmPy-GC/MSMS technique. Results interpretation quality is strongly influenced by factors such as standard sample collection, features of the

#### **Figure 1.**

*Schematic LmPy-GC/MSMS system (a) and LmPy-GC/MSMS hyphenated system located at LAFO-UFRJ, Brazil (b).*

samples, and preparation proceedings. Additionally, all these factors also have a significant effect on the utility of the LmPy-GC/MSMS analysis. The LmPy-GC/MSMS analysis can be carried out in samples such as whole rock (WR), kerogen concentrated (KC), individual organic components, or solid bitumen. However, analyses of isolated components are strongly recommended to avoid the influence of bordering material products.
