弹着点射击残留物转印介质的比较研究  

Comparative Study of Transfer Medias of Gunshot Residues at Impact Point

作　　者：高梦林 沈尧[1,2] 李轶昳 苗翠英[1] GAO Menglin;SHEN Yao;LI Yiyi;MIAO Cuiying(Investigation College of 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]中国人民公安大学侦查学院,北京100038 [2]公安部物证鉴定中心,北京100038

出　　处：《中国无机分析化学》2022年第2期97-107,共11页Chinese Journal of Inorganic Analytical Chemistry

基　　金：中央级公益性科研院所基本科研业务费专项资助项目(2017JB014);中央高校基本科研业务费专项资助项目(2020JKF306)。

摘　　要：为了考察应用于弹着点射击残留物(Gunshot Residues,GSR)收集的转印介质其显色效果、影响因素、提取次数、后续高光谱分析的质量、易用性和成本等,通过实验比较BenchKote、相纸(230 g)、彩激纸(160 g)、白卡纸(260 g)、超滑纸(300 g),采用湿法提取纺织品上的GSR,然后利用红氨酸和玫瑰红酸钠显色剂将GSR可视化,再进行验证性的高光谱成像仪的分析,确定了彩激纸为最佳转印介质选择。实验涉及两种枪支口径、6种射击距离和纺织品的干燥和湿润两种情况,探究了化学显色与高光谱成像仪的联用,为多次提取进行收集固定证据、临场快速显现、分析枪支种类和射击距离提供可能。In order to investigate the color test effect,influencing factors,extraction times,quality of subsequent hyperspectral analysis,ease of use,and cost of the transfer medias used in Gunshot Residues(GSR)at impact point,BenchKote,photo paper(230 g),color laser paper(160 g),white cardboard(260 g),super slippery paper(300 g)were compared to wet extract GSR from textiles,and used dithiooxamide(DTO),sodium rhodizonate to visualize GSR,and then performed a confirmatory analysis of the hyperspectral imager.And the color laser paper(160 g)was identified as the best choice.The experiment involved two gun calibers,six distances,and the dryness and wetting constitutions of textiles.The combination of chemical color test and hyperspectral imager was explored.It provided the possibility for multiple extractions to collect and fix evidence,rapid appearence on the impact point,analyze the gun type and shooting distance.

关 键 词：转印介质 射击残留物 显色反应 高光谱成像技术 

分 类 号：O641.4[理学—物理化学]