Use of near infrared spectroscopy in a study of binding media used in paintings

摘要

The present study illustrates the use of near infrared spectroscopy in the conservation and restoration field. This application of the technique, widely used in other fields such as the agricultural and food industries, is very interesting due to two of its features: rapidity and non-destructiveness. In this study, three classification algorithms have been used to attempt to correlate the spectra of the samples under study-mixtures of two pigments (one organic and the other inorganic)-with binder recipes found in literature. Some of these recipes have very similar compositions, but they were distinguished into groups, depending on the painting technique associated with them.