Centre for Forensic Science, WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, UK.
Forensic Sci Int. 2012 Jan 10;214(1-3):67-81. doi: 10.1016/j.forsciint.2011.07.020. Epub 2011 Aug 2.
A range of chemical techniques were utilised for the enhancement of footwear impressions deposited on a variety of fabric types of different colours with urine as a contaminant. A semi-automated stamping device was used to deliver test impressions at a set force to minimise the variability between impressions; multiple impressions were produced and enhanced by each reagent to determine the repeatability of the enhancement. Urine samples from different donors were analysed using a spectrofluorophotometer revealing differences between individuals. Results indicated that the enhancement of footwear impressions in urine was possible using amino acid staining techniques whereas protein stains failed to achieve successful enhancement.
研究利用了一系列化学技术来增强在不同颜色的各种织物类型上沾染了尿液的鞋印。研究采用半自动冲压装置以一定的力施加测试印痕，以尽量减少印痕之间的差异；对每个试剂进行多次印痕增强处理，以确定增强的可重复性。使用分光荧光光度计分析了来自不同供体的尿液样本，结果显示个体之间存在差异。结果表明，使用氨基酸染色技术可以增强尿液中的鞋印，而蛋白质染色则无法成功增强。
