Karapanayiotis Thanasis, Jorge Villar Susana E, Bowen Richard D, Edwards Howell G M
Department of Chemical and Forensic Sciences, University of Bradford, Bradford, West Yorkshire, UKBD7 1DP.
Analyst. 2004 Jul;129(7):613-8. doi: 10.1039/b401798f. Epub 2004 May 14.
The Raman and electron impact mass spectra of synthetic indigo and its four 6,6'-dihalogeno analogues are reported and discussed. The influence of varying the halogen on these Raman spectra is considered. Particular emphasis is laid on distinguishing indigo from 6,6'-dibromoindigo and differentiating between the dihalogenocompounds, so as to develop protocols for determining whether artefacts are coloured with dyes of marine or terrestrial origin and whether such artefacts are dyed with genuine "Tyrian Purple" or with dihalogenoindigo substitutes that do not contain bromine. The value of even low resolution electron impact mass spectrometry in a forensic context as a means of identifying authentic 6,6'-dibromoindigo and distinguishing it from its dihalogenoanalogues is emphasised
报道并讨论了合成靛蓝及其四种6,6'-二卤代类似物的拉曼光谱和电子轰击质谱。考虑了改变卤素对这些拉曼光谱的影响。特别强调区分靛蓝和6,6'-二溴靛蓝，以及区分二卤代化合物，以便制定方案来确定人工制品是用海洋来源还是陆地来源的染料染色，以及这些人工制品是用真正的“泰尔紫”染色，还是用不含溴的二卤代靛蓝替代品染色。强调了即使是低分辨率电子轰击质谱在法医背景下作为鉴定 authentic 6,6'-二溴靛蓝并将其与其二卤代类似物区分开来的手段的价值。
