Decay of a Roman age pine wood studied by micro magnetic resonance imaging, diffusion nuclear magnetic resonance and portable nuclear magnetic resonance

Wood is a hygroscopic biodegradable porous material widely used by men in the past to create artworks. Its total preservation over time quite rare and one of best modalities waterlogging. Observing anatomy waterlogged archaeological wood could also be complicated because its bacterial degradation. However, characterization morphology conservation state fundamental step before starting any restoration intervention as it allows extract information about climatic conditions human activities. In this work, micro-invasive approach based on combined use high-resolution magnetic resonance imaging (MRI) diffusion-nuclear (NMR) was tested both modern an ancient pine sample. Furthermore, completely non-invasive analysis performed using portable NMR. This multi-analytical NMR allowed highlight effect decay microstructure, through alterations pores size, tortuosity, images contrast compared one. work pointed out different but complementary multi-parametric that can obtained potential high-field MRI low-field detection diagnostic features.