小颗粒悬浮液对浸水非渗透性客体表面上汗潜手印的显现研究  

Study of Developing Sweat Latent Fingerprints on Wet Non-porous Items by the Small Particle Reagents

作　　者：李康[1] 袁颖 Li Kang, Yuan Ying(1. Zhejiang Police College, Hangzhou, Zhejiang, 310053;2. Guizhou Police College, Guiyang, Guizhou, 550005)

机构地区：[1]浙江警察学院,浙江杭州310053 [2]贵州警察学院,贵州贵阳550005

出　　处：《贵州警官职业学院学报》2018年第1期56-60,共5页Journal of Guizhou Police Officer Vocational College

摘　　要：为了更好地了解小颗粒悬浮液法在显现浸水非渗透性客体表面汗潜手印方面的实用性,选择基层现场勘查时常用的磁性粉与同为黑色的二硫化钼小颗粒悬浮液显现同一枚手印的左右两部分,观察对比两种方法在显现不同遗留时间及不同客体表面上汗潜手印的效果。在显现浸水非渗透性客体汗潜手印方面,小颗粒悬浮液法与磁性粉刷显法各有千秋,但小颗粒悬浮液法的推广仍需更为系统和全面的研究。To better understand the practicability of developing sweat latent fingerprints on wet non-porous items by the small particle reagents. Choosing the magnetic powders which is always used during the crime scene and the molybdenum disulfide small particle reagent whose color is black for study. Using the both methods develop the same fingerprints of two parts, and compare the two methods to show the effects of different time and wet non-porous items on the development of sweat latent fingerprints. When the molybdenum disulfide small particle reagent and the magnetic powders develop the fingerprints of the white tiles and glass surfaces, both methods are good. But when they develop the fingerprints of the silver aluminum, plastics with good adhesion and woods with primary color and large surfaces, the magnetic powders are better. In the five kinds of items, the effects of the molybdenum disulfide small particle reagents developing the fingerprints of the white tiles and glass surfaces are better than the other three items. However, the effects of the molybdenum disulfide small particle reagents developing the fingerprints which are relatively new or stamped with greater force and a large amount of sweat are worse than which are slightly stale or stamped with appropriate force and the right amount of sweat. On the hand of developing sweat latent fingerprints on wet non-porous items, the molybdenum disulfide small particle reagents and the magnetic powders each have their own advantages. But the promotion of small particle reagents still requires a more systematic and comprehensive study.

关 键 词：二硫化钼小颗粒悬浮液 磁性粉 浸水非渗透性客体 手印显现 

分 类 号：D918.91[政治法律—法学]