title: Differentiation of aged fibers by Raman spectroscopy and multivariate data analysis.
abstract: Raman spectroscopy followed by multivariate data analysis was used to analyze cotton fibers dyed using similar formulations and submitted to different aging conditions. Spectra were collected on a commercial instrument using a near-infrared laser with a 780nm light source. Discriminant analysis allowed to correctly classify the aged fibers 100% of the time. The prediction ability of the calculated model was estimated to be 100% by the "leave-one-out" cross-validation for 3 out of the 4 series under investigation. Finally, reliability of the developed approach for the discrimination of aged vs new fibers was confirmed by the analysis of commercial polyamide and polyester textiles submitted to the same aging process.
authors.affiliation: Dipartimento di Chimica, Università degli Studi di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy. Electronic address: federica.bianchi@unipr.it.
authors.forename: Federica
authors.initials: F
authors.lastname: Bianchi
authors.affiliation: Dipartimento di Chimica, Università degli Studi di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
authors.forename: Nicolò
authors.initials: N
authors.lastname: Riboni
authors.affiliation: Dipartimento di Chimica, Università degli Studi di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
authors.forename: Valentina
authors.initials: V
authors.lastname: Trolla
authors.affiliation: Dipartimento di Chimica, Università degli Studi di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
authors.forename: Giada
authors.initials: G
authors.lastname: Furlan
authors.affiliation: Reparto Carabinieri Investigazioni Scientifiche di Parma, Via Parco Ducale 3, 43125 Parma, Italy.
authors.forename: Giorgio
authors.initials: G
authors.lastname: Avantaggiato
authors.affiliation: Reparto Carabinieri Investigazioni Scientifiche di Parma, Via Parco Ducale 3, 43125 Parma, Italy.
authors.forename: Giuliano
authors.initials: G
authors.lastname: Iacobellis
authors.affiliation: Dipartimento di Chimica, Università degli Studi di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
authors.forename: Maria
authors.initials: M
authors.lastname: Careri
keywords: Aging; Discriminant analysis; Dyes; Forensic science; Raman spectroscopy; Textiles