不同材质手套内表面汗潜手印最佳显现方法探究

Optimal Developing Method for Latent Fingerprints on the Inner Surface of Gloves

犯罪嫌疑人在实施违法犯罪活动时经常会佩戴手套,有时也会将手套丢弃在现场周围,从而成为重要物证,目前对于手套上遗留汗潜手印显现的报道较少。采用五种常规显现方法对日常生活中常见材质手套内表面的汗潜手印进行显现,并对其显现结果采用评分制进行评价,探究了不同材质手套内表面汗潜手印的最佳显现方法。结果表明,手套内表面汗潜手印显现的最佳方法为小微粒悬浮液法和氰基丙烯酸酯熏显法,最佳方法对不同材质手套或不同厂家生产的同种材质手套内表面手印的显现效果不尽相同,因此在对手套内表面汗潜手印显现之前,需采用最佳方法在空白处进行预实验。

Criminal suspects often wear gloves when carrying out illegal and criminal activities,and sometimes discard the gloves around the scene,which become important physical evidence.At present,the development of latent sweaty fingerprints left on gloves is rarely reported.In this experiment,we employed five conventional developing methods to visualize the latent sweat fingerprints on the inner surface of gloves used in daily life,and evaluated the development results to explore the best method.The results showed that the best methods for developing the inner surface fingerprints of gloves are the suspension and cyanoacrylate fuming method.The best way to show the fingerprints on the inner surface of gloves of different materials or the same material produced by different manufacturers is not the same.Therefore,it is recommended to use the best method to conduct pre-experiment in the blank area before developing the inner surface fingerprints of gloves.