Differentiation of Commercial Polyester Fibers Using Two-Dimensional High-Performance Liquid Chromatography (HPLC) and Multivariate Pattern Recognition Techniques

Kretschmer, Klaus; Helbig, Wolfgang

doi:10.1520/jfs11985j

Cited by 7 publications

(4 citation statements)

References 27 publications

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“…Experimental conditions were more reproducible then the use of adhesive tape (740). Polyester fibers were classified by manufacture using HPLC and a multivariate pattern recognition technique (741). An investigation was carried out on the influence of fabric softener of fiber transfers (742).…”

Section: Forensic Biochemistrymentioning

confidence: 99%

Forensic science

Brettell¹,

Saferstein²

1993

Anal. Chem.

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Section: Forensic Biochemistrymentioning

confidence: 99%

Forensic science

Brettell¹,

Saferstein²

1993

Anal. Chem.

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“…FT-IR and Raman spectroscopy can be used to identify the material of fibers; however, to discriminate fibers of the same material, it is often difficult. For dye analysis, destructive methods for single-fiber analysis include thin-layer chromatography and liquid chromatography-mass spectrometry [8,9]. These methods provide excellent discrimination between single fiber samples.…”

Section: Introductionmentioning

confidence: 99%

Nondestructive discrimination of red silk single fibers using total reflection X‐ray fluorescence spectrometry and synchrotron radiation X‐ray fluorescence spectrometry

Komatsu

Takahara

Matsuda

et al. 2021

Journal of Forensic Sciences

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In a strangulation case, when a necktie is used as a murder weapon, the dyed silk single fiber becomes an important evidence sample to solve the crime. Dyed silk single fibers contain elements, such as Cr and Co, which are obtained from dyeing using metal mordants. Currently, there are no nondestructive and sufficiently sensitive elementary analytical methods for the forensic analysis of single fibers. Therefore, in this study, eight commercially available red silk samples were collected and used for total reflection X-ray fluorescence (TXRF) and synchrotron radiation X-ray fluorescence (SR-XRF) spectrometry. Benchtop TXRF detected both S in the silk protein and Cl and Ca, which are elements absorbed from the environment by silkworms, but also Cr, which is a dyeing derivative for metal mordants. The presence of Cr and Zn, in addition to the Zn/Cr signal intensity ratios, was reported to be particularly useful identifiers. In SR-XRF, the presence of Cr, Co, Zn, and Br and the Zn/Cr signal intensity ratios were reported to be useful discriminating indicators. In this study, the nondestructive discrimination capabilities of TXRF and SR-XRF measurements for the samples were found to be 85.7% and 100%, respectively. Therefore, we propose a combination of TXRF and SR-XRF as a new nondestructive single fiber identification method for forensic science. Moreover, if partial destruction of a single fiber is allowed, the observation of the cross section and micro-Fourier-transform infrared spectroscopy measurements is useful for identifying red silk fibers.

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“…Identification methods utilized include morphological observation, especially of animal or plant fibers, chemical component analysis by micro infrared spectrometry (micro-FT-IR) [2] and color evaluation by microspectrophotometry (MSP) [3][4][5]. Furthermore, dyestuffs have been evaluated by high performance thin layer chromatography (HPTLC) [6], high performance liquid chromatography (HPLC) [7] and mass spectrometry [8]. Recently, the requirement for identification of fibers from artificial leathers has been increasing especially on hit-and-run cases.…”

Section: Introductionmentioning

confidence: 99%