0000000000709686
AUTHOR
G. Chirco
Laboratory of X-ray Fluorescence (XRF)
In this laboratory activity, the X-ray Fluorescence Spectroscopy technique is introduced. The goal of the laboratory is to show to the students the theory and the applications of the above technique in the field of underwater archaeology. After a brief introduction about the theory and the instrumentations, some case studies are showed. The students thus see the practice application of the portable XRF Tracer III SD Bruker AXS spectrometer having a Rhodium tube as an X-ray generator and a silicon drift XFlash ® with Peltier cooling system as a detector to some finds saved at the Museo Archeologico Antiquarium ex Stabilimento Florio delle tonnare di Favignana e Formica. The identification of…
Investigation on a low environmental impact solvent mixture applied to a wooden painted slab
Cleaning is one of the most complex and delicate step in a restoration project, often due to the manufacturing techniques of the artifacts and their advanced state of decay. Eco-friendly solvents can permit to execute the cleaning operations with a reduced health impact for the restorers and for the environment. In this work, the performance of the 1,3- dioxolane/methylal (DIOX-MET) solvent mixture is evaluated over a wooden painted slab that had been covered with a thin layer of a protective varnish, probably during a previous conservation work performed in the Sixties. Removal of this varnish has been considered on behalf of its yellowing degradation process, which caused chromatic change…