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Issue 13, 2019
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Unravelling the spatial dependency of the complex solid-state chemistry of Pb in a paint micro-sample from Rembrandt's Homer using XRD-CT

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Abstract

The surface of many Old Master paintings has been affected by the appearance of whitish lead-rich deposits, which are often difficult to fully characterise, thereby hindering conservation. A paint micro-sample from Rembrandt's Homer was imaged using X-ray Diffraction Computed Tomography (XRD-CT) in order to understand the evolving solid-state Pb chemistry from the painting surface and beneath. The surface crust was identified as a complex mixture of lead sulfates. From the S : Pb ratios throughout the paint layer, we can conclude that S is from an external source in the form of SO2, and that the nature of Pb–SO4 product is dependent on the degree of diffusion/absorption of SO2 into the paint layers.

Graphical abstract: Unravelling the spatial dependency of the complex solid-state chemistry of Pb in a paint micro-sample from Rembrandt's Homer using XRD-CT

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Publication details

The article was received on 06 Dec 2018, accepted on 15 Jan 2019 and first published on 25 Jan 2019


Article type: Communication
DOI: 10.1039/C8CC09705D
Citation: Chem. Commun., 2019,55, 1931-1934
  • Open access: Creative Commons BY license
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    Unravelling the spatial dependency of the complex solid-state chemistry of Pb in a paint micro-sample from Rembrandt's Homer using XRD-CT

    S. W. T. Price, A. Van Loon, K. Keune, A. D. Parsons, C. Murray, A. M. Beale and J. F. W. Mosselmans, Chem. Commun., 2019, 55, 1931
    DOI: 10.1039/C8CC09705D

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