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Raman spectroscopy as a non-destructive screening technique for studying white substances from archaeological and forensic burial contexts

Authors

  • Eline M. J. Schotsmans,

    Corresponding author
    1. Department of Archaeological Sciences, University of Bradford, Bradford, West Yorkshire, UK
    2. PACEA UMR 5199, Laboratoire d'Anthropologie des Populations Passées et Présentes, Université de Bordeaux, France
    • Correspondence to: Eline M. J. Schotsmans, Department of Archaeological Sciences, University of Bradford, Bradford, West Yorkshire BD7 1DP, UK.

      E-mail: eline.schotsmans@live.be

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  • Andrew S. Wilson,

    1. Department of Archaeological Sciences, University of Bradford, Bradford, West Yorkshire, UK
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  • Rhea Brettell,

    1. Department of Archaeological Sciences, University of Bradford, Bradford, West Yorkshire, UK
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  • Tasnim Munshi,

    1. Department of Chemical and Forensic Sciences, University of Bradford, Bradford, West Yorkshire, UK
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  • Howell G. M. Edwards

    1. Department of Chemical and Forensic Sciences, University of Bradford, Bradford, West Yorkshire, UK
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  • This article is part of the special issue of the Journal of Raman Spectroscopy entitled “Raman in Art and Archaeology 2013” edited by Polonca Ropret and Juan Manuel Madariaga.

Abstract

Raman spectroscopy was evaluated as a non-destructive analytical tool for the characterisation of white substances in burials. In addition, Fourier transform Raman spectroscopy was used to assess the conversion of hydrated lime into calcium carbonate. Fourteen samples of white substances from archaeological and forensic sites were analysed and characterised. The results show that not all white residues in burials are lime. Lime can easily be mistaken for other building materials (gypsum), for minerals (brushite) or degraded metal (cerussite). This study highlights the need for chemical analysis of white residues when encountered in burials. Analytical information derived from Raman spectra of white substances can further assist in the interpretation of the taphonomic processes of burials and their funerary context. Copyright © 2014 John Wiley & Sons, Ltd.

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