摘要
目的研究热致荧光显现方法与传统显现方法(茚三酮显现法、硝酸银显现法、DFO显现法、茚二酮显现法)之间的相互影响,探究热致荧光显现手印后再采用传统方法进行增强处理的效果;方法依托TFD-2纸张手印快速显现系统,通过实验对比纸张上热致荧光显现方法与传统显现方法的显现效果和可鉴定率;结果热致荧光显现手印不影响后续采用传统显现方法的显现效果,并在一定程度上对传统显现方法起到增强作用。但是传统方法显现手印会不同程度的影响热致荧光显现法的后处理显现,根据实验研究结果,可将这种方法融入到渗透性客体上手印显现流程中;结论对于常见纸张上的汗潜手印,热致荧光显现法可以用于传统显现方法显现前的预处理,对传统方法的后续显现没有影响。热致荧光显现法和传统的显现方法具有一定的延续性,同时,传统显现方法也可以对一些客体上热致荧光显现法显现效果不佳或反差较弱的手印进行增强处理。
Objective To study the mutual influence between the methods to develop fingerprint by thermal induced fluorescence and the traditional handling with substances such as ninhydrin, silver nitrate, DFO and Indandione, by ascertaining whether the fingerprint developed with thermal induced fluorescence is enhanced by the successively traditional treatment, and vice versa, the handling of thermal induced fluorescence can improve the fingerprint development by the traditional method. Methods With the optimum TFD-2 conditions, the effect and identifiability was compared upon the onpaper fingerprint developed by the thermal induced fluorescence and traditional disposal. Results The experimental results show that the method of thermal induced fluorescence does not affect the follow-up traditional handling for the fingerprint development, but even enhance the developing effect to some extent, whereas the traditional methods can variously influence the effect gained with the thermal induced fluorescence. The above experimental phenomena may suggest that this method can be incorporated into the development of fingerprint on porous objects. Conclusion The method of thermal induced fluorescence can be used to pretreat the latent fingerprints on common paper before traditional methods, with advantages of simple operation, quick development, high sensitivity, wide scope of application, and more effectiveness for old fingerprint.
出处
《刑事技术》
2016年第3期195-199,共5页
Forensic Science and Technology
基金
基本科研业务费自主选题项目(NO.2014JB007)
关键词
汗潜手印
热致荧光显现
传统手印显现
相互影响
latent fingerprint
thermally induced fluorescence
traditional method
interaction
作者简介
李孝君（1982-），男，山西忻州人，学士，助理研究员，研究方向为手印学。E-mail：com．cn．li@163．com
