Synchrotron X-ray Diffraction Microtomography and X-ray Tomography for the Evaluation of Combined Ammonium Oxalate and Ammonium Phosphate Tr

This research proposes to employ advanced X-ray diffraction microtomography and x-ray microtomography to investigate the effects induced by combined ammonium oxalate (AmOx) and ammonium phosphate (DAP) treatments in the conservation of carbonate stones in Cultural Heritage. In this research, we will explore the potential of AmOx and DAP treatment on Noto limestone (Val di Noto, UNESCO’s World Heritage List) which is a porous calcareous material composed of calcite in micritic size. By non-destructively studying the distribution of newly formed phases and their interaction with stone microstructures, we aim to enhance our understanding of stone conservation techniques and ensure the long-term durability of cultural artifacts. Results are expected to provide crucial insights into phase identification, crystallinity, voids, and treatment-microstructure interactions, advancing the knowledge in calcite stone conservation and supporting the application of inorganic treatments on worksites.