刑事技术Issue(1)：12-14,3.DOI:10.16467/j.1008-3650.2015.01.003
亮绿 SF 溶液增强红色光滑客体表面潜血手印技术研究
Visualization of Latent Blood Fingerprints on Red Surface with Light Green SF Yellowish
王跃 1胡书良 2刘晋2
作者信息
- 1. 北京警察学院，北京 102202
- 2. 公安部物证鉴定中心，北京 100038
- 折叠
摘要
Abstract
Objective Since tetramethylbenzidine has substituted benzidine to visualize latent blood fingerprints, it is the preferential choice for developing latent blood fingerprints based on the principle that its oxidized resultant can make the fingerprints of shallow-color or colorless turn into cyan color. But, the fingerprints developed by this method show low contrast when the observed objects are red and even lower the fuscous, are difficult or cannot be photographed. This paper tries to explore a new technique to enhance the development of blood fingerprints on red surface. Methods The solution of 0.25% light green SF yellowish was sprayed onto latent blood fingerprints deposited on red surfaces. The revealed fingerprints were taken pictures, some parts of the fingerprints were further amplified to find out the enhancement effect. Results The light green SF yellowish was very sensitive to develop the blood fingerprints deposited on red surfaces, capable of making 100% visible the samples of latent blood fingerprints prepared in the laboratory. The developed fingerprints showed clear and coherent ridge, distinct contrast without background color and when amplified, the chosen parts of them appearing the features of detail. Conclusions 0.25%light green SF yellowish can effectively visualize latent blood fingerprints on red surface with very distinct contrast.关键词
潜血手印/红色表面/亮绿 SF/增强Key words
latent blood fingerprint/red surface/light green SF yellowish/enhancement分类
社会科学引用本文复制引用
王跃,胡书良,刘晋..亮绿 SF 溶液增强红色光滑客体表面潜血手印技术研究[J].刑事技术,2015,(1):12-14,3.
