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Non-destructive dating of fiber-based gelatin silver prints using near-infrared spectroscopy and multivariate analysis

Martins, A; Daffner, LA; Fenech, A; McGlinchey, C; Strlic, M; (2012) Non-destructive dating of fiber-based gelatin silver prints using near-infrared spectroscopy and multivariate analysis. Analytical and Bioanalytical Chemistry , 402 (4) 1459 - 1469. 10.1007/s00216-011-5566-2. Green open access

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Abstract

An innovative approach to date fiber-based gelatin silver prints using near-infrared spectroscopy (NIR) and multivariate analysis is presented. NIR spectra were acquired for 152 film stills printed in the USA between 1914 and 1986, and partial least square (PLS) analysis was used to correlate the spectra with the year the photographs were printed. Principal component analysis and spectral interpretation helped clarify the underlying correlation between the print date and the composition and ageing of the photographic papers. The method was successfully validated with an independent set of 66 film stills printed in the USA, and a prediction error (root mean square error of prediction) of 6 years was achieved. The method was also tested on films stills printed in Germany and Russia, as well as amateur prints and photographs in the collection of the Museum of Modern Art. The prediction error was significantly larger, with the exception of the amateur prints, due to differences in the composition and/or properties of the papers depending on their geographical origin and purpose as confirmed by discriminant analysis.

Type: Article
Title: Non-destructive dating of fiber-based gelatin silver prints using near-infrared spectroscopy and multivariate analysis
Open access status: An open access version is available from UCL Discovery
DOI: 10.1007/s00216-011-5566-2
Publisher version: http://dx.doi.org/10.1007/s00216-011-5566-2
Language: English
Additional information: The original publication is available at www.springerlink.com
Keywords: Photographic paper, Cultural heritage, Dating method, Near infrared spectroscopy, Multivariate analysis
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment > Bartlett School Env, Energy and Resources
URI: https://discovery.ucl.ac.uk/id/eprint/1340895
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