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Non-invasive identification of synthetic organic pigments in contemporary art paints by visible–excited spectrofluorimetry and visible reflectance spectroscopy.

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Bibliographic Details
Title: Non-invasive identification of synthetic organic pigments in contemporary art paints by visible–excited spectrofluorimetry and visible reflectance spectroscopy.
Authors: Longoni, M.1 (AUTHOR), Freschi, A.1 (AUTHOR), Cicala, N.1 (AUTHOR), Bruni, S.1 (AUTHOR) silvia.bruni@unimi.it
Source: Spectrochimica Acta Part A: Molecular & Biomolecular Spectroscopy. Mar2020, Vol. 229, pN.PAG-N.PAG. 1p.
Subjects: Optical spectroscopy, Reflectance spectroscopy, 21st century art, Pigments, Paint, Emulsion paint, Principal components analysis, Binary mixtures
Abstract: 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. Unlabelled Image • 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. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract: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. Unlabelled Image • 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. [ABSTRACT FROM AUTHOR]
ISSN:13861425
DOI:10.1016/j.saa.2019.117907