Analytical and Bioanalytical Chemistry

, Volume 397, Issue 7, pp 2717–2725

Portable Raman monitoring of modern cleaning and consolidation operations of artworks on mineral supports

  • I. Martínez-Arkarazo
  • A. Sarmiento
  • M. Maguregui
  • K. Castro
  • J. M. Madariaga
Original Paper

DOI: 10.1007/s00216-010-3610-2

Cite this article as:
Martínez-Arkarazo, I., Sarmiento, A., Maguregui, M. et al. Anal Bioanal Chem (2010) 397: 2717. doi:10.1007/s00216-010-3610-2

Abstract

Any restoration performed on cultural heritage artworks must guarantee a low impact on the treated surfaces. Although completely risk-free methods do not exist, the use of tailor-made procedures and the continuous monitoring by portable instrumentation is surely one of the best approaches to conduct a modern restoration process. In this work, a portable Raman monitoring, combined sometimes with spectroscopic techniques providing the elemental composition, is the key analysis technique in the three-step restoration protocol proposed: (a) in situ analysis of the surface to be treated (original composition and degradation products/pollutants) and the cleaning agents used as extractants, (b) the thermodynamic study of the species involved in the treatment in order to design a suitable restoration method and (c) application and monitoring of the treatment. Two cleaning operations based on new technologies were studied and applied to two artworks on mineral supports: a wall painting affected by nitrate impact, and a black crusted stone (chalk) altarpiece. Raman bands of nitrate and gypsum, respectively, decreased after the step-by-step operations in each case, which helped restorers to decide when the treatment was concluded, thus avoiding any further damage to the treated surface of the artworks.

Keywords

ArtworksMineral supportMonitoringPortabilityRaman spectroscopyRestoration

Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • I. Martínez-Arkarazo
    • 1
  • A. Sarmiento
    • 1
  • M. Maguregui
    • 1
  • K. Castro
    • 1
  • J. M. Madariaga
    • 1
  1. 1.Kimika Analitikoaren Saila – Department of Analytical Chemistry, Faculty of Science and TechnologyUniversity of the Basque Country (EHU/UPV)BilbaoSpain