Fig. 16
From: Painting on the margins: investigating the pigments, media, and techniques of Séraphine Louis
THM-Py-GCMS data (total ion chromatogram) for a blue paint sample from Tree of Paradise showing the presence of fatty and dicarboxylic acids characteristic of a drying oil and oxidized diterpenes characteristic of Pinaceae resin. Su suberic, Az azelaic, P palmitic, S stearic, DHA dehydroabietic, 7-oxo-DHA 7-oxo-dehydroabietic acids; all compounds detected as methylated derivatives