Analysis of chromophores in stained-glass windows using Visible Hyperspectral Imaging in-situ

Teresa Palomar; Chiara Grazia; Isabel Pombo Cardoso; Marcia Vilarigues; Costanza Miliani; Aldo Romani

doi:10.1016/j.saa.2019.117378

Analysis of chromophores in stained-glass windows using Visible Hyperspectral Imaging in-situ

Spectrochim Acta A Mol Biomol Spectrosc. 2019 Dec 5:223:117378. doi: 10.1016/j.saa.2019.117378. Epub 2019 Jul 9.

Authors

Teresa Palomar¹, Chiara Grazia², Isabel Pombo Cardoso³, Marcia Vilarigues⁴, Costanza Miliani⁵, Aldo Romani⁵

Affiliations

¹ Unidade de investigação VICARTE-Vidro e Cerâmica para as Artes, Campus de Caparica, FCT-UNL, Quinta da Torre, 2829-516 Caparica, Portugal; Instituto de Cerámica y Vidrio, Consejo Superior de Investigaciones Científicas (ICV-CSIC), c/Kelsen 5, Campus de Cantoblanco, 28049 Madrid, Spain. Electronic address: t.palomar@csic.es.
² SMAArt Centre, c/o Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Via Elce di Sotto, 8, 06123 Perugia, Italy.
³ Dpto. de Conservação e Restauro, Universidade NOVA de Lisboa, Campus de Caparica, FCT-UNL, Quinta da Torre, 2829-516 Caparica, Portugal; LAQV-REQUIMTE, Universidade NOVA de Lisboa, Campus de Caparica, FCT-UNL, Quinta da Torre, 2829-516 Caparica, Portugal.
⁴ Unidade de investigação VICARTE-Vidro e Cerâmica para as Artes, Campus de Caparica, FCT-UNL, Quinta da Torre, 2829-516 Caparica, Portugal; Dpto. de Conservação e Restauro, Universidade NOVA de Lisboa, Campus de Caparica, FCT-UNL, Quinta da Torre, 2829-516 Caparica, Portugal.
⁵ SMAArt Centre, c/o Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Via Elce di Sotto, 8, 06123 Perugia, Italy; CNR-ISTM c/o Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Via Elce di Sotto, 8, 06123 Perugia, Italy.

PMID: 31323494
DOI: 10.1016/j.saa.2019.117378

Abstract

This work presents the implementation of Visible Hyperspectral Imaging for the in-situ analysis of glass chromophores in two glass windows from the Casa-Museu Dr. Anastácio Gonçalves (Lisbon, Portugal). The measurements were taken inside the building using natural sunlight as the illumination source. In addition, advantages and disadvantages of the followed methodology are discussed. The Dining Room glass window presents glasses colored in bulk with iron, manganese, cobalt, copper, and chromium; silver staining was also detected and was used to create the yellow and orange colors. The Atelier panel was produced with uncolored glasses painted with grisaille and enamels; the chromophores identified are similar to the species identified in the Dining Room panel.

Keywords: Chromophores; Colored glass; Enamels; Stained-glass windows; Visible Hyperspectral imaging.