Department of Chemistry, The University of York, Heslington, York YO10 5DD, UK.
Forensic Sci Int. 2010 Oct 10;202(1-3):54-63. doi: 10.1016/j.forsciint.2010.04.026. Epub 2010 May 18.
Resonance Raman and UV-visible diffuse reflectance spectra were recorded from samples of cotton, viscose, polyester, nylon, and acrylic textile swatches dyed black with one of seven single dyes, a mixture of two dyes, or one of seven mixtures of three dyes. The samples generally gave characteristic Raman spectra of the dyes, demonstrating that the technique is applicable for the forensic analysis of dyed black textiles. Survey studies of the widely used dye Reactive Black 5 show that essentially the same Raman spectrum is obtained on bulk sampling from the dye in solution, on viscose, on cotton at different uptakes, and on microscope sampling from the dye in cotton threads and single fibres. The effects of laser irradiation on the Raman bands and emission backgrounds from textile samples with and without dye are also reported.
从用七种单一染料、两种染料混合物或七种三种染料混合物染成黑色的棉、粘胶、聚酯、尼龙和腈纶纺织品样本中记录了共振拉曼和紫外-可见漫反射光谱。这些样本通常给出了染料的特征拉曼光谱，表明该技术适用于黑色纺织品的法医分析。对广泛使用的染料反应黑 5 的调查研究表明，从溶液中的染料、粘胶、不同吸收量的棉上的大块取样，以及从棉线和单纤维中的染料显微镜取样，实质上得到相同的拉曼光谱。还报告了激光辐照对有和无染料的纺织品样本的拉曼带和发射背景的影响。
