Raman spectroscopic analysis of the enigmatic Comper pigments

EDWARDS, Howell G M, WOLSTENHOLME, Rosalind, WILKINSON, David S, BROOKE, Christopher and PEPPER, Michelle (2007). Raman spectroscopic analysis of the enigmatic Comper pigments. Analytical and bioanalytical chemistry, 387 (6), 2255-2262.

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Link to published version:: https://doi.org/10.1007/s00216-006-1113-y
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    An early church decoration project carried out by Sir Ninian Comper in 1896-98, involving the rood screen and canopy in St. Mary's, Egmanton, is currently undergoing restoration. Despite the rather prolific works of this famous ecclesiastical architect, there is little information available about the actual pigments that he used in his projects that gave rise to the special nomenclature "Comper green" and "Comper red". Specimens of green, red, black, grey, white and blue paint from this work have been made available for Raman spectroscopic analysis, and their identification has been achieved for the first time. The characteristic red and green pigments used in Comper's work, Comper green and Comper red, are both seen to be mixtures; in the former, Raman bands from chrome yellow (lead(II) chromate) and Prussian blue are identified, and the latter is confirmed as being a mixture of vermilion (mercury(II) sulfide) and barytes (barium sulfate). The other colours are found to represent a rich diversity of palette and include haematite, lead tin yellow (type II), lamp black, gypsum, anhydrite, hydrocerussite and calcite. The information from this first Raman spectroscopic study of Comper's palette will assist the conservation and restoration of an important nineteenth century church decoration.

    Item Type: Article
    Additional Information:

    Special Issue : Luminescence Spectrometry

    [First published online] Date: 23 Jan 2007

    Research Institute, Centre or Group - Does NOT include content added after October 2018: Biomolecular Sciences Research Centre
    Identification Number: https://doi.org/10.1007/s00216-006-1113-y
    Page Range: 2255-2262
    Depositing User: Jamie Young
    Date Deposited: 30 Jun 2015 13:33
    Last Modified: 30 Jun 2015 13:33
    URI: http://shura.shu.ac.uk/id/eprint/10031

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