Research Article

Yellow pigments in painting: characterisation and UV laser-induced modifications

  1. S. Acquaviva1,
  2. P. Baraldi2,
  3. E. D'Anna1,
  4. M. L. De Giorgi1,
  5. A. Della Patria3,*,
  6. L. Giotta4,
  7. S. Omarini3,
  8. R. Piccolo3

Article first published online: 14 APR 2009

DOI: 10.1002/jrs.2316

Issue

Journal of Raman Spectroscopy

Journal of Raman Spectroscopy

Volume 40, Issue 11, pages 1664–1667, November 2009

Additional Information

How to Cite

Acquaviva, S., Baraldi, P., D'Anna, E., De Giorgi, M. L., Della Patria, A., Giotta, L., Omarini, S. and Piccolo, R. (2009), Yellow pigments in painting: characterisation and UV laser-induced modifications. J. Raman Spectrosc., 40: 1664–1667. doi: 10.1002/jrs.2316

Author Information

  1. 1

    Department of Physics, University of Salento, Lecce, Italy

  2. 2

    Department of Chemistry, University of Modena and Reggio Emilia, Modena, Italy

  3. 3

    C.N.R.—INOA, Cultural Heritage Group, Lecce, Italy

  4. 4

    Department of Materials Science, University of Salento, Lecce, Italy

*C.N.R.—INOA, Cultural Heritage Group, Lecce, Italy.

Publication History

  1. Issue published online: 11 NOV 2009
  2. Article first published online: 14 APR 2009
  3. Manuscript Accepted: 18 MAR 2009
  4. Manuscript Received: 22 DEC 2008

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Keywords:

  • colour measurement;
  • excimer laser-induced effects;
  • micro-Raman spectroscopy;
  • spectrophotometry;
  • yellow pigments

Abstract

Artistic yellow pigments, commonly employed from antiquity, were investigated by morphological, spectrophotometric and compositional analyses. Namely, scanning electron microscopy–energy dispersive X-ray (SEM/EDX) characterisations and reflectance, attenuated total reflection–Fourier transform infrared spectroscopy (ATR-FTIR) and Raman spectroscopy were carried out on egg yolk tempera models to discriminate the pigments. The models were irradiated with excimer KrF (248 nm) laser at different working conditions, and the effects induced on colour were related to chemical and physical modifications through the same analyses, as a function of laser parameters.

It came out that the effects on the pictorial layers are always related to the modifications of the binding medium and, in addition, the laser radiation induces dehydration and transformation of iron oxides in natural earths. Copyright © 2009 John Wiley & Sons, Ltd.

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