Spectral characterization for the evaluation of a protective coating on dolomite by visible and near infrared spectroscopy
Year: 2025
Type: article
Abstract: Calcareous heritage stones are essential to the European cultural heritage but vulnerable to weathering that compromises their structural and aesthetic integrity. Graphene oxide (GO) emerges a promising protective coating, enhancing resistance to climatic aggressions while preserving the stone’s appearance and reducing restoration costs. To ensure effective application and to monitor durability, rapid and consistent on-site analytical methods are needed. This study evaluates infrared spectroscopy as a non-destructive and reliable tool for the characterization and quantification of GO coatings applied to dolomite stones coming from two different Spanish quarries. Using a partial least squares regression, spectral data enabled accurate assessment of the coating presence, concentration (which was tested in the range from 0 to 16.5 µg·cm⁻²), and uniformity. This work establishes vibrational spectroscopy as a powerful in situ technique for monitoring protective coatings on heritage stones, providing a measurable and reliable framework to safeguard cultural assets against environmental degradation.
Source: Applied Surface Science Advances
Institutions: Universidad de León, Instituto de Carboquímica
Language: English
Subfield: Archeology
Field: Arts and Humanities
Domain: Social Sciences
Open Access status: gold
Estimated APC paid: $2,350
OpenAlex ID: W7083581490