Estimating the concentrations of pigments and binders in lead-based paints using FT-Raman spectroscopy and principal component analysis

Anuradha Pallipurath, Róza Villȍ Vȍfély, Jonathan Skelton, Paola Ricciardi, Spike Bucklow, Stephen Elliott

Research output: Contribution to journalArticle

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Abstract

Understanding the composition of the paints used on works of art is crucial in attributing them to the artist or workshop that created them, as well as to devising strategies for their preservation and restoration. Much current research is focussed on the development of non-invasive spectroscopic methods, enabling in situ paint analysis without the need for sampling. However, whilst a lot of work has been carried out on looking at the composition of artists' materials qualitatively, little has been performed to analyse them quantitatively. In this work, we investigate the use of Fourier transform Raman spectroscopy, in isolation and in conjunction with complementary fibre optic reflectance spectroscopy, to look at the spectral changes that occur with varying the paint/binder ratio in model historic lead-based paints. When used in conjunction with multivariate analysis, we demonstrate that it can be possible to obtain a semi-quantitative estimation of the composition of a paint film from its Fourier transform Raman spectrum, given a set of suitable reference spectra recorded from paints produced within the workable mixture range. This represents a tentative first step towards a semi-automated and quantitative method for analysing cultural heritage objects, which may help boost our understanding of their history, and enable conservators to make more informed decisions so as to ensure their preservation.
LanguageEnglish
Pages1272-1278
Number of pages7
JournalJournal of Raman Spectroscopy
Volume45
Issue number11-12
Early online date18 Jun 2014
DOIs
StatusPublished - Nov 2014

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Pigments
Paint
Principal component analysis
Binders
Raman spectroscopy
Lead
Fourier transforms
Chemical analysis
Fiber optics
Restoration
Raman scattering
Spectroscopy
Sampling

Cite this

Pallipurath, A., Vȍfély, R. V., Skelton, J., Ricciardi, P., Bucklow, S., & Elliott, S. (2014). Estimating the concentrations of pigments and binders in lead-based paints using FT-Raman spectroscopy and principal component analysis. DOI: 10.1002/jrs.4525

Estimating the concentrations of pigments and binders in lead-based paints using FT-Raman spectroscopy and principal component analysis. / Pallipurath, Anuradha; Vȍfély, Róza Villȍ; Skelton, Jonathan; Ricciardi, Paola; Bucklow, Spike ; Elliott, Stephen.

In: Journal of Raman Spectroscopy, Vol. 45, No. 11-12, 11.2014, p. 1272-1278.

Research output: Contribution to journalArticle

Pallipurath, A, Vȍfély, RV, Skelton, J, Ricciardi, P, Bucklow, S & Elliott, S 2014, 'Estimating the concentrations of pigments and binders in lead-based paints using FT-Raman spectroscopy and principal component analysis' Journal of Raman Spectroscopy, vol. 45, no. 11-12, pp. 1272-1278. DOI: 10.1002/jrs.4525
Pallipurath A, Vȍfély RV, Skelton J, Ricciardi P, Bucklow S, Elliott S. Estimating the concentrations of pigments and binders in lead-based paints using FT-Raman spectroscopy and principal component analysis. Journal of Raman Spectroscopy. 2014 Nov;45(11-12):1272-1278. Available from, DOI: 10.1002/jrs.4525
Pallipurath, Anuradha ; Vȍfély, Róza Villȍ ; Skelton, Jonathan ; Ricciardi, Paola ; Bucklow, Spike ; Elliott, Stephen. / Estimating the concentrations of pigments and binders in lead-based paints using FT-Raman spectroscopy and principal component analysis. In: Journal of Raman Spectroscopy. 2014 ; Vol. 45, No. 11-12. pp. 1272-1278
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