BEYOND THE GOLDEN GLOW: ANALYTICAL STUDY OF MURAL PAINTINGS AND STUCCOES IN THE PALATINE CHAPEL OF S. ANNA

This study examines the chemical composition of wall paintings and stucco work in the Palatine Chapel of S. Anna, housed within the Ventimiglia Castle of Castelbuono, Sicily. Employing non-destructive techniques such as X-ray fluorescence (XRF), Fourier transform infrared (FT-IR) spectroscopy, and X-ray diffraction (XRD), the research identifies the pigments and materials used in the chapel's decorations. The analyses have found that the iconic golden yellow background primarily consists of lead- and iron-based pigments, with traces of gold. The stucco analysis revealed a composition characteristic of the Serpotta school, predominantly featuring calcite, gypsum, and minor quartz. Additionally, indoor dust analysis detected significant lead levels, raising concerns about environmental impact and cultural heritage preservation. These findings provide essential insights for conservation strategies and deepen the understanding of the chapel's artistic and historical significance.