FORENSIC EXAMINATION OF TEXTILE FIBERS USING UV-VIS SPECTROSCOPY COMBINED WITH MULTIVARIATE ANALYSIS
Abstract
The current study aims at discriminating cotton and woolen textile fibers from dye using UV-Vis spectroscopy and chemometrics methods. For extraction of the dye from fibers, seven solvent systems have been used, and different extraction conditions have also been tested. Two different approaches, i.e., a visual comparison of peaks and chemometric analysis, have been proposed to differentiate between the textile fibers. The comparison of peaks obtained through UV-Vis spectra provides the discrimination power of 83.6% for cotton fibers and 94.3% for the woolen fibers. However, the incorporation of chemometrics has further improved the discrimination power to 100% for cotton and 98.1% for woolen fibers. The discrimination of 100% is achieved with nonsignificant values of the Welch’s t-test, which illustrates that all samples are discriminated.
About the Authors
V. . Sharma
Institute of Forensic Science and Criminology, Panjab University
Russian Federation
Russian Federation
R. . Kumar
Institute of Forensic Science and Criminology, Panjab University
Russian Federation
Russian Federation
P. . Kaur
Institute of Forensic Science and Criminology, Panjab University
Russian Federation
Russian Federation
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Review
For citations:
Sharma V., Kumar R., Kaur P. FORENSIC EXAMINATION OF TEXTILE FIBERS USING UV-VIS SPECTROSCOPY COMBINED WITH MULTIVARIATE ANALYSIS. Zhurnal Prikladnoii Spektroskopii. 2019;86(1):110-115. (In Russ.)
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