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Article

Forensic Analysis of Polymeric Carpet Fibers Using Direct Analysis in Real Time Coupled to an AccuTOF™ Mass Spectrometer

1
Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, P.O. Box 80216, Jeddah 21589, Saudi Arabia
2
King Fahad Medical Research Center, King Abdulaziz University, P.O. Box 80216, Jeddah 21589, Saudi Arabia
3
Virginia Department of Forensic Science, Richmond, VA 23219-1416, USA
*
Author to whom correspondence should be addressed.
Academic Editors: Helena P. Felgueiras, Jorge Padrão and Joana C. Antunes
Received: 15 June 2021 / Revised: 2 August 2021 / Accepted: 5 August 2021 / Published: 12 August 2021
(This article belongs to the Special Issue Extraction of Cellulose-Based Polymers from Textile Wastes)
Polymeric fibers are encountered in numerous forensic circumstances. This study focused on polymeric carpet fibers most encountered at a crime scene, which are nylons, polyesters and olefins. Analysis of the multiple polymer types was done using Direct Analysis in Real Time (DART) coupled to an Accurate time-of-flight (AccuTOF™) mass spectrometer (MS). A DART gas temperature of 275 °C was determined as optimal. Twelve olefin, polyester, and nylon polymer standards were used for parameter optimization for the carpet fiber analysis. A successful identification and differentiation of all twelve polymer standards was completed using the DART-AccuTOF. Thirty-two carpet samples of both known and unknown fiber composition were collected and subsequently analyzed. All samples with known fiber compositions were correctly identified by class. All of the remaining carpet samples with no known composition information were correctly identified by confirmation using Fourier-transform infrared spectroscopy (FTIR). The method was also capable of identifying sub-classes of nylon carpet fibers. The results exhibit the capability of DART-AccuTOF being applied as an addition to the sequence of tests conducted to analyze carpet fibers in a forensic laboratory. View Full-Text
Keywords: polymer; carpet fiber; direct analysis in real time; time of flight; mass spectrometry; function switching; oleamide polymer; carpet fiber; direct analysis in real time; time of flight; mass spectrometry; function switching; oleamide
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MDPI and ACS Style

Zughaibi, T.A.; Steiner, R.R. Forensic Analysis of Polymeric Carpet Fibers Using Direct Analysis in Real Time Coupled to an AccuTOF™ Mass Spectrometer. Polymers 2021, 13, 2687. https://0-doi-org.brum.beds.ac.uk/10.3390/polym13162687

AMA Style

Zughaibi TA, Steiner RR. Forensic Analysis of Polymeric Carpet Fibers Using Direct Analysis in Real Time Coupled to an AccuTOF™ Mass Spectrometer. Polymers. 2021; 13(16):2687. https://0-doi-org.brum.beds.ac.uk/10.3390/polym13162687

Chicago/Turabian Style

Zughaibi, Torki A., and Robert R. Steiner 2021. "Forensic Analysis of Polymeric Carpet Fibers Using Direct Analysis in Real Time Coupled to an AccuTOF™ Mass Spectrometer" Polymers 13, no. 16: 2687. https://0-doi-org.brum.beds.ac.uk/10.3390/polym13162687

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