Non-Invasive Study of Pigment Palette Used by Olga Boznańska Investigated with Analytical Imaging, XRF, and FTIR Spectroscopy

The scientific examination and comparative investigation of pigments are fundamental for further understanding and analysis of historic and artistic works, and particularly useful for conservators. In fine art authentication, investigations are strongly focused on the identification of the painting materials used by the author. This study is focused on the use of non-invasive analytical techniques to increase the knowledge of the painting technique of Olga Boznańska. The aim of this study was to assess the technology, painting technique, and materials used by Olga Boznańska. The pallets, tubes with the paints, and several oil paintings were studied. For each painting, a series of images were recorded using various ranges of electromagnetic radiation, including near-infrared, visible light, ultraviolet, and X-rays. In order to characterize the pigments present in the paint layer, measurements of the elemental composition by X-ray fluorescence spectroscopy (XRF) were carried out. The ground layers and paints were measured with infrared spectroscopy (FTIR). This allowed us to identify the artist’s painting technique and determine how she executed her painting, how she applied the paints, and what pigments she used.