手套印痕中潜指纹的显现  

Exploration of Latent Fingerprint Development in Glove Impressions

作　　者：黄巾梁 柴新乐 马荣梁 HUANG Jinliang;CHAI Xinle;MA Rongliang(People’s Public Security University of China,Beijing 100038,China;Institute of Forensic Science,Ministry of Public Security,Beijing 100038,China)

机构地区：[1]中国人民公安大学,北京100038 [2]公安部鉴定中心,北京100038

出　　处：《刑事技术》2024年第3期237-246,共10页Forensic Science and Technology

基　　金：中央级公益性科研院所基本科研业务费专项资金项目(2022JB028)。

摘　　要：本研究针对不同材质的手套在不同承痕客体上形成的印痕,通过实验探究最佳的显现方法,为戴手套作案现场的痕迹勘验和现场勘验人员的手套选择提供建议。实验人员穿戴四种不同材质的一次性手套,将手套捺印在A4纸(印泥)、胶带粘面、玻璃表面、铝合金、白色塑料窗框等承痕客体上,使用不同方法显现并观察效果。结果表明,戴PVC手套和医用检查手套在非渗透性客体上捺印后,使用磁性粉刷显现能够呈现具有鉴定价值的印痕。对于留有油汗介质的医用检查手套捺印在胶带粘面的印痕,透光拍摄能够得到最佳效果,且具备鉴定条件。此外,PVC手套和医用检查手套在玻璃客体上遗留6 d的印痕依然具备较高的鉴定条件。TPE手套的印痕因手套表面特有的花纹特征在不同承痕客体上能够得到较好反映,有助于识别手套的类型。综上所述,本文实验结果对于指导戴手套作案案件的现场勘验具有重要意义。同时,不推荐现勘人员在现场勘验过程中穿戴PVC手套和医用检查手套。In this experiment,four different types of disposable gloves made of different materials were pressed onto the surfaces of A4 paper(with ink),adhesive tape,glass,aluminum alloy and white plastic window frames,to observe the marks left by gloves made of different materials on various non-porous substrates.The results of the experiment showed that the impressions left on the non-porous surfaces by polyvinyl chloride gloves and medical examination gloves showed recognizable ridges of forensic value when they were embossed and revealed using a magnetic powder brush.Notably,medical examination gloves containing oil and sweat residues showed optimal results with high forensic potential when imprinted on the tape surface and photographed using transmitted light.In addition,PVC gloves and medical examination gloves retained distinctive ridges in the impressions left on the glass surface and maintained high-quality identifying features even after an interval of 6 days.In summary,these experimental results are important for guiding the scene investigation in cases involving the use of gloves.However,based on the characteristics of PVC gloves and medical examination gloves observed in the experiments,it is not recommended these two kinds of gloves during evidence collection.The results of the study provide valuable insights for optimizing fingerprint identification techniques and improving the efficiency and accuracy of forensic investigations involving glove-related evidence.

关 键 词：指纹显现 粉末刷显 手套印痕 塑料手套 

分 类 号：D918.91[政治法律—法学]