Journal
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
Volume 401, Issue 2, Pages 757-765Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00216-011-5085-1
Keywords
Portable XRF; Portable Raman; FORS; Polychrome terracotta statues; Monitoring
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The potential of non-invasive in situ analytical techniques such as portable Raman, portable X-ray fluorescence, portable optical microscope and fibre optics reflectance spectroscopy has been shown studying painted layers of Renaissance terracotta polychrome sculptures belonging to the statuary of Santo Sepolcro Church in Milan. The results obtained allowed pointing out the contribution of these techniques to the compositional diagnostic, providing complete information, in some cases, better than micro-destructive techniques, on the kind of pigments used on the external painted layers. Moreover, a comparison with the results obtained before the last conservation work (2009) with micro-destructive techniques allowed ascertaining the removal of the external painted layers during the conservation operations.
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