Ricerc@Sapienza

An analytical approach applied to Vincenzo Pasqualoni's wall paintings in the apse of S. Nicola in Carcere (Rome) is described in this work. The diagnostic campaign was guided following the indications of the restorers, which were supported over all the phases of the restoration, addressing the multi-analytical approach to identify the original pigments palette used by artist, the conservation state and the presence of consolidants materials, by using spectroscopic techniques supported by chemometric analyses.

tThis paper presents an investigation of yellow pigments based on lead, tin and antimony through X-rayfluorescence spectroscopy with the aim of comparing portable and laboratory instruments and discussingthe potential application on artworks. Artificial yellow pigments, based on Pb-Sb-Sn, and produced inour laboratory, were chosen in order to have a well-known and already characterized sample set. Thedifferentiation in artworks of these pigments is still a challenge if non-invasive portable X-ray spectro-meters are used, as commonly occurs in practice.