Also included in Fig. 4 is the SS mFPD response toward aliphatic and aromatic hydrocarbon test analytes measured under the same S2* conditions. As seen, both dodecane and benzene each produce a very similar modest response in the SS mFPD. This is reasonable since previous spectral studies of the mFPD have shown that both aliphatic and aromatic hydrocarbons degrade into similar species in the worker flames prior to entering the analytical flame