Analyses of the stained glasses of Certosa di Pavia


  • Presented at the European Conference on EDXRS, Krakow, Poland, 18–23 June 2000.


In the planned restoration of the stained glass windows of the ‘Certosa di Pavia’ presently in progress, systematic elemental energy-dispersive x-ray fluorescence (XRF) analysis of glasses has been undertaken on the request of ‘Soprintendenza per i Beni Ambientali e Architettonici’. Analyses of fragments from the first two window-panes (‘S. Girolamo’ and ‘Presepe’) have been performed. For homogeneous glass samples, quantitative analyses have been obtained by using a secondary XRF set-up and applying the method of measuring Compton scattering intensity to evaluate self-absorption corrections. This procedure proved to be effective, as it was checked after comparisons with several standard glass analyses. Also, lateral cross-sections of each sample have been examined by a 100 µm capillary x-ray microprobe, so that elements characteristic of glass composition can be discriminated from those due to surface contamination (from lead bindings, for instance). X-ray microprobe was also a method suited for analyses of layered glasses, as well as spotted small areas or grisaille zones. Copyright © 2002 John Wiley & Sons, Ltd.