Testing 1D and 2D single-sided NMR on Roman age waterlogged woods

Waterlogged archaeological wood can provide information on past human activities and technology but its structure may be modified due to microbial deterioration. Knowing conservation state is fundamental for restoration. Aim of this work was test the use non-destructive portable NMR microstructural characterization preservation three samples (Roman age, 5th century AD). 1D T1 T2 relaxation time distributions, as well 2D T1-T2 D-T2 distributions were measured by single-sided interpreted with help high resolution magnetic resonance imaging (MRI) optical microscopy. Due complexity ancient samples, in first study a multi-analytical approach required. It allowed both waterlogged softwood (spruce) hardwood (chestnut maple) quantifying times diffusion water components affected presence degradation products such fungi, paramagnetic agents, changes. Optical microscopy needed investigate sub-microscopic elements not resolved MRI validate indirect investigations. Observations results will allow improvement protocols analyses situ NMR.