Fig. 4From: Comparative chemical investigations of alum treated archaeological wood from various museum collectionsChromatographic profiles obtained by Py-GC/MS for selected samples from a the Danish Dejbjerg collection (sample D-A1624), b the Norwegian Oseberg collection (sample N-207-A), c Swedish Glimmingehus collection (sample S-125k) and d) untreated Oseberg collection (sample N-124), where: H holocellulose, L (lignin, either S or G), S (syringyl lignin) and G (G-guaiacyl), LO linseed oil, GL glycerol pyrolysis productsBack to article page