The occurrence and individuality of orange and green cotton fibres

Grieve, M.C.; Biermann, Thomas; d’Avignon, Mathieu

doi:10.1016/s1355-0306(03)71736-5

Cited by 35 publications

(14 citation statements)

References 4 publications

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“…Luckily a recent publication [25] has shown this assumption to be completely wrong. In recent years there have been a few studies looking at "blocks of colour" [26,27,28,29]. These studies involve collecting garments or samples of material that are of one fibre type and colour and comparing each sample to the next using a range of microscopic and analytical techniques used routinely in casework.…”

Section: Evidential Value Of Fibresmentioning

confidence: 99%

The European Fibres Group (EFG) 1993?2002: "Understanding and improving the evidential value of fibres"

Wiggins

2003

Analytical and Bioanalytical Chemistry

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The paper outlines the history of the European Fibres Group (EFG) and includes its aims and achievements from the time of its formation in 1993 to the present day. The main emphasis is on the subject of "the evidential value of fibres", how the EFG have provided the data and where to locate it. Additionally the paper provides a look into what the group has accomplished in the recognition of the "lack of data" and the research being conducted to correct this problem. Finally it outlines other projects that are underway to improve its members' knowledge.

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Section: Evidential Value Of Fibresmentioning

confidence: 99%

The European Fibres Group (EFG) 1993?2002: "Understanding and improving the evidential value of fibres"

Wiggins

2003

Analytical and Bioanalytical Chemistry

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“…1,2 Many studies have been conducted to analyze the dyes in colored fibers using microspectrophotometry, [3][4][5][6][7][8][9][10] TLC, [11][12][13][14][15][16][17][18][19] HPLC, [20][21][22][23][24][25] and LC/MS, [26][27][28][29][30] because these dyes can provide significant information in forensic analyses.…”

Section: Introductionmentioning

confidence: 99%

Extraction and Analysis of Disperse Dyes from Colored Polyester Single Fibers Using Liquid Chromatography/Linear Ion Trap Tandem Mass Spectrometry

2016

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Nine disperse dyes extracted from colored polyester threads and single fibers of manufactory-supplied textiles by using centrifugal filtration were analyzed using liquid chromatography/linear ion trap tandem mass spectrometry (LC/LIT-MS n ). Based on diode array detector data, dimethylformamide (DMF) was found to be a more effective extraction solvent than acetonitrile/water (4:3, v/v) or methanol/water (1:1, v/v) mixtures. The precursor, [M+H] + ions, were detected for the dyes extracted using DMF. The MS 2 and MS 3 spectra also matched those of the standard disperse dyes. Without relying on comparison clothes, disperse dyes extracted from the single fibers (5 mm in length) were successfully identified by LC/LIT-MS n and the custom-built database.

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“…More objective measurements can be obtained using instrumental methods such as microspectrophotometry (MSP), which is favored as a rapid and non-destructive method for characterizing the color of dyed fibers [8,9]. Several studies have demonstrated the capability of MSP to distinguish visually similar colored fibers based upon different chromophores in the molecular structure of their dyes [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Improving the confidence of “questioned versus known” fiber comparisons using microspectrophotometry and chemometrics

et al. 2016

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Microspectrophotometry followed by chemometric data analysis was conducted on pairs of visually similar blue acrylic fibers, simulating the "questioned versus known" scenarios often encountered in forensic casework. The relative similarity or dissimilarity of each pair was determined by employing principal component analysis, discriminant analysis and Fisher's exact test. Comparison of fibers from within each set resulted in a correct inclusion result in 10 out of 11 scenarios, with the one false exclusion attributed to a lack of reproducibility in the spectra. Comparison of fibers from different sets resulted in a correct exclusion result in 108 of 110 scenarios, with two sets that shared identical dye combinations being indistinguishable.Although the presented methods are not infallible, they may nonetheless provide a path forward for forensic fiber examiners that has a more scientifically rigorous basis on which to support their findings in a court of law.

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The occurrence and individuality of orange and green cotton fibres

Cited by 35 publications

References 4 publications

The European Fibres Group (EFG) 1993?2002: "Understanding and improving the evidential value of fibres"

The European Fibres Group (EFG) 1993?2002: "Understanding and improving the evidential value of fibres"

Extraction and Analysis of Disperse Dyes from Colored Polyester Single Fibers Using Liquid Chromatography/Linear Ion Trap Tandem Mass Spectrometry

Improving the confidence of “questioned versus known” fiber comparisons using microspectrophotometry and chemometrics

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