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The paper presents measurement results of LIBS and optical microscopy investigations applied to five 17th-century oil paintings, belonging to the collection of the Museum of King Jan III’s Palace at Wilanów. The analysis devoted to ground layers at depths of about 200 – 300 μm (40 – 60 laser pulses) allowed to find stratigraphy distributions of elements characteristic for ground layers. During the latest investigations, the researchers concentrated mainly on the comparison of some specific elements like Li, Ba, Ti which could indicate the origin of the pigment and help in the process of classification of the paintings. LIBS spectra analyses were supported by statistical factorial analyses which visibly confirmed conclusions drawn from spectral and optical microscopy research.

LIBS, optical and multivariate analyses of selected 17 th-century oil paintings from the Museum of King Jan III’s palace at Wilanów