Munro Mhairi, Deacon Paul, Farrugia Kevin J
School of Science, Engineering & Technology, Division of Computing and Forensic Sciences, University of Abertay, Dundee, DD1 1HG, UK.
c/o School of Science, Engineering & Technology, Division of Computing and Forensic Sciences, University of Abertay, Dundee, DD1 1HG, UK.
Sci Justice. 2014 May;54(3):185-91. doi: 10.1016/j.scijus.2013.11.002. Epub 2013 Dec 19.
Recent studies have reported the use of alginate in the lifting and subsequent enhancement of footwear marks in blood. A study was set up to assess the use of such a method in the treatment of fingermarks in blood on a variety of porous, non-porous and semi-porous surfaces. Other variables included ageing of the fingermarks in blood and the application of chemicals prior to or post-alginate lifting. All different variations were compared to direct chemical treatment of the substrate. The results demonstrated that alginate is not compatible with certain substrates (e.g. glass and tile). On substrates that were compatible with alginate (e.g. fabric and paper), the enhanced fingermarks on the alginate cast and the enhanced fingermarks on the post-alginate substrates appeared, overall, inferior compared to direct chemical enhancement without the use of alginate. A further variation using water-based protein stains directly mixed with the alginate appeared to provide enhancement directly on the substrate as well as simultaneous lifting and enhancing the fingermarks in blood on the alginate cast.
最近的研究报道了藻酸盐在提取血液中鞋印并随后增强鞋印方面的应用。开展了一项研究，以评估该方法在处理各种多孔、无孔和半多孔表面上血液中的指纹时的应用情况。其他变量包括血液中指纹的老化以及在藻酸盐提取之前或之后使用化学物质。将所有不同的变化情况与对底物进行直接化学处理进行了比较。结果表明，藻酸盐与某些底物（如玻璃和瓷砖）不相容。在与藻酸盐相容的底物（如织物和纸张）上，藻酸盐铸型上增强的指纹以及藻酸盐处理后底物上增强的指纹，总体上与不使用藻酸盐的直接化学增强相比显得较差。另一种变化是将水基蛋白质污渍直接与藻酸盐混合，这似乎能直接在底物上实现增强效果，同时还能提取并增强藻酸盐铸型上血液
中的指纹。
