RT Journal Article
T1 Potential of pyrolysis-GC–MS molecular fingerprint as a proxy of Modern Age Iberian shipwreck wood preservation
A1 Traoré, Mohamed
A1 Kaal, Joeri
A1 Martínez Cortizas, Antonio
K1 Archaeological wood
K1 Diagenesis
K1 Multivariate statistics
K1 Preservation indices
K1 Polysaccharide
K1 Lignin
K1 Py-GC-MS
AB Even though pyrolysis in combination with gas chromatography and mass spectrometry (Py-GC–MS) is widely used for molecular characterization of wood, its abilities to determine the taxonomy (species), provenance and the nature and intensity of degradation of archaeological woods are hardly explored. We performed principal component analysis (PCA) on Py-GC–MS data of sound woods and shipwreck woods of Pinus sp. and Quercus sp., to identify the impact of diagenesis on pyrolysis fingerprints. It was found that the proportion of most polysaccharide products decreased significantly upon diagenesis with the exception of 3-hydroxy-2-methyl-2-cyclopenten-1-one, which remains relatively well preserved. Furthermore, the guaiacyl lignin products were generally well preserved with the exception of 4-propylguaiacol, the relative contribution of which decreased considerably. New indices are proposed to establish the preservation state of shipwreck wood (shipwreck wood preservation index; SWPI) on the basis of polysaccharides (SWPIPS) and guaiacyl lignin (SWPILG) and syringyl lignin (SWPILS) fingerprints. Stepwise multiple linear regressions analyses applied on FTIR data of the same samples are indicative of the consistency of both techniques and the potential to identify changes in wood chemistry as a result of degradation. Other factors that influence wood composition, such as the differences between soft- and hardwood lignin and sap- and heartwood were also recognized
PB Elsevier
SN 0165-2370
YR 2017
FD 2017-07-16
LK http://hdl.handle.net/10347/17455
UL http://hdl.handle.net/10347/17455
LA eng
NO Traoré, M., Kaal, J., & Cortizas, A. M. (2017). Potential of pyrolysis-GC–MS molecular fingerprint as a proxy of Modern Age Iberian shipwreck wood preservation. Journal of Analytical and Applied Pyrolysis, 126, 1-13.
NO This study was developed within the framework of the ForSeaDiscovery project funded by the European Research Council through the Seventh Framework Programme under grant agreement number 607545. We thank the editor and the anonymous reviewer for their time and insightful comments
DS Minerva
RD 23 abr 2026