The aerosol samples are generated with a linear smoking machine and collected on a Cambridge filter pad. Target compounds are then extracted with 2-butanone containing the internal standards. The extracts are analyzed by Gas Chromatography with Electron Impact Mass Spectrometry (GC-EI-MS). The GC system is equipped with a column DB-WAXETR 0.25 mm x 30 m x 0.25 µm. Results are expressed as µg/item for the Tobacco Heating System (THS), referred to as Platform 1 (P1) in the method.