title: Py-GC/MS applied to the analysis of synthetic organic pigments: characterization and identification in paint samples.
abstract: A collection of 76 synthetic organic pigments was analysed using pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS). The purpose of this work was to expand the knowledge on synthetic pigments and to assess characteristic pyrolysis products that could help in the identification of these pigments in paint samples. We analysed several classes of synthetic pigments not previously reported as being analysed by this technique: some metal complexes, β-naphthol pigment lakes, BONA pigment lakes, disazopyrazolone, triarylcarbonium, dioxazine, anthraquinone, indanthrone, isoindoline and thioindigo classes. We also report for the first time the Py-GC/MS analysis of a number of naphthol AS, benzimidazolone, phthalocyanine and perylene pigments and other miscellaneous pigments including pigments with unpublished chemical structure. We successfully used the Py-GC/MS technique for the analysis of paints by artists Clyfford Still and Jackson Pollock to identify the synthetic organic pigments and the binding media.
authors.affiliation: Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Moruzzi 3, 56124, Pisa, Italy.
authors.forename: Elisa
authors.initials: E
authors.lastname: Ghelardi
authors.forename: Ilaria
authors.initials: I
authors.lastname: Degano
authors.forename: Maria Perla
authors.initials: MP
authors.lastname: Colombini
authors.forename: Joy
authors.initials: J
authors.lastname: Mazurek
authors.forename: Michael
authors.initials: M
authors.lastname: Schilling
authors.forename: Tom
authors.initials: T
authors.lastname: Learner