Wiesner Sarena, Izraeli Elad, Shor Yaron, Domb Avi
Toolmarks and Materials Laboratory, Division of Identification and Forensic Sciences (DIFS), Israel Police H.Q., Jerusalem 91906, Israel.
J Forensic Sci. 2013 May;58(3):782-8. doi: 10.1111/1556-4029.12116. Epub 2013 Mar 12.
A method for lifting bloody footwear impressions using alginate casts and enhancing the lifted impressions with amido black is presented. On rough or dark substrates, background interferences may conceal significant details of footwear impressions. Illumination with alternative light sources and chemically enhancing the bloody footwear impressions may reveal additional details, but sometimes, lifting footwear impressions prior to enhancing is the only way to expose hidden details (by using blood reagents not adequate on the original). Several cast formulations were tested for lifting the footwear impressions. The best results were achieved using Aroma fine®. Enhancement of the footwear impressions was attempted with several reagents prior to lifting, during the casting process, and on the lifted footwear impressions. Applying amido black to footwear impressions lifted with alginate produced the sharpest and most detailed footwear impressions. Alginate castings followed by chemical enhancement with amido black may produce high-quality footwear impressions for comparison.
本文介绍了一种使用藻酸盐铸型提取带血鞋印，并使用氨基黑增强提取的鞋印的方法。在粗糙或深色的底物上，背景干扰可能会掩盖鞋印的重要细节。使用替代光源照明和化学增强带血鞋印可能会揭示更多细节，但有时，在增强之前提取鞋印是暴露隐藏细节的唯一方法（通过使用在原始鞋印上效果不佳的血液试剂）。测试了几种铸型配方用于提取鞋印。使用Aroma fine®取得了最佳效果。在提取之前、铸型过程中以及提取后的鞋印上，尝试使用几种试剂增强鞋印。将氨基黑应用于用藻酸盐提取的鞋印上，可产生最清晰、细节最丰富的鞋印。藻酸盐铸型后用氨基黑进行化学增强，可产生高质量的鞋印用于比对。
