J.IIC-CG VOLUME 15 (1990)
Application de la spectrométrie de fluorescence des rayons X à l’étude des photographies peintes
This article shows how it is possible to detect photographic image materials underneath paint layers using X-ray fluorescence spectrometry, a non-destructive technique. The method was first tested by analyzing samples made with several 19th-century photographic processes: it was demonstrated that silver can be detected in silver prints, and similarly platinum in platinotypes. The same samples were covered with watercolour paint, and the influence of 18 pigments on the detection of the image forming element was evaluated. Finally, eleven painted photographs from two collections were analyzed.
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