Non-destructive measurements on roman frescoes pigments

In the present work the portable PIXE-? system realized within a collaboration between the INFN/LANDIS (Catania, Italy) and the CEA LIST (Saclay, France) has been used for the non destructive analysis of roman frescoes fragments belonging to different archaeological sites of Catania. Moreover, a portable XRD diffractometer has been used to individuate the mineralogical phases. It is shown that, by combining the two techniques, a fully quantitative analysis of the frescoes surface is possible. It is also shown that, comparing the XRF data to PIXE ones, information on stratigraphic sequence of layers components is possible.