The discrimination of (non-denim) blue cotton

The prevalence of two ‘commonly’ encountered synthetic target fibres within a large urban environment

“…Unlike cotton fibres reported in colour block studies [9,11], this study has demonstrated that the use of comparison microscopy has high discrimination for synthetic target fibres, due to the high degree of variation in their visual morphology.…”

“…However, studies such as those published by Grieve et al [26], Palmer et al [11], Buzzini and Massonnet [10] and Massonnet et al [27], demonstrate that this may not be the case for all fibre type colour combinations (especially blue and black) cotton fibres.…”

“…It should also be noted that the introduction of UV-visible range diode array detector microspectrophotometers into routine casework around the late 1990's and early 2000, have been shown to offer superior discrimination to previous monochromator based instrumentation, which operated only within the visible range of the electromagnetic spectrum, particularly with regard to coloured cotton fibres [9,11]. In addition, improvements in computer hardware and software used in MSP control and data acquisition have allowed the application of the first derivative to spectral data, which provided it is used with caution, can assist in discriminating between fibres with very similar, but different dyes [28].…”

“… Colour block studies: provide information on the ability of a scheme of analysis to discriminate between ostensibly similar fibres of a given generic fibre/ colour combination [6][7][8][9][10][11][12][13].…”

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

“…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.…”