Non-invasive identification of synthetic organic pigments in contemporary art paints by visible–excited spectrofluorimetry and visible reflectance spectroscopy
The non-destructive, in-situ identification of synthetic organic pigments employed in contemporary painting still represents a challenge. In the present study, a non-invasive analytical method based on spectrofluorimetry and visible reflectance spectroscopy was developed to this aim and applied to a...
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| Published in: | Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Vol. 229; p. 117907 |
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| Main Authors: | , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Elsevier B.V
15-03-2020
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| Subjects: | |
| Online Access: | Get full text |
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| Summary: | The non-destructive, in-situ identification of synthetic organic pigments employed in contemporary painting still represents a challenge. In the present study, a non-invasive analytical method based on spectrofluorimetry and visible reflectance spectroscopy was developed to this aim and applied to a considerable number of synthetic organic pigments belonging to the main chemical classes and sold by different manufacturers. In order to discriminate among them, the collected data were processed by a multivariate statistical approach, using principal component analysis (PCA). Moreover, the Kubelka-Munk correction for self-absorption of fluorescence emission was successfully applied to identify pigments in binary mixtures. This approach was finally exploited to recognise the organic pigments used by the artist in a contemporary painting.
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•Synthetic organic pigments are identified non-invasively in contemporary art paints.•Visible-excited fluorescence and visible reflectance spectroscopy are combined.•The spectroanalytical protocol is applied to identify pigments in a real painting. |
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| ISSN: | 1386-1425 |
| DOI: | 10.1016/j.saa.2019.117907 |