阳极氧化电解显现射击前弹壳上手印的研究  

Research on Developing Fingerprints on Cartridge Cases before Firing by Anode Oxidation Electrolysis

作　　者：李孝君 慕玉玲[3] 李捷[4] 郝翔[5] 关晨[5] 

机构地区：[1]法庭科学湖北省重点实验室,湖北武汉430034 [2]公安部物证鉴定中心,北京100038 [3]中国人民公安大学,北京100038 [4]西安市公安局刑侦局技术处,陕西西安710038 [5]西安市公安局雁塔分局刑侦大队,陕西西安710061

出　　处：《中国司法鉴定》2015年第2期55-57,共3页Chinese Journal of Forensic Sciences

基　　金：公安部物证鉴定中心基本科研业务费专项资金重点项目(NO.2009JB005)

摘　　要：目的解决涉枪案件现场提取到的射击前的弹壳或留存在弹夹中的弹壳上手印的提取。方法采用电化学方法中阳极氧化电解方式显现黄铜弹壳或紫铜弹壳上的手印。结果利用H68黄铜片和紫铜片的等效性能,摸索出了阳极氧化电解弹壳上手印上检测方法,并应用于射击前黄铜弹壳或紫铜弹壳上手印的显现。结论实验发现,所形成的检测方法能够有效的显现出射击前黄铜弹壳或紫铜弹壳上手印,同时依据实验现象分析出了阳极氧化显现黄铜弹壳或紫铜弹壳上手印的原理。Objective To develop latent fingerprints left on cartridge cases before firing. Method Anode oxidation electrolysis was adopted to develop latent fingerprints on the copper or brass cartridge cases. Results The H68 brass/copper sheets were used to optimize the conditions of anodic oxidation electrolysis. The optimized conditions were applied to developing the fingerprints on the copper or brass cartridge cases before firing. Conclusion The established method can effectively develop latent fingerprints on the copper or brass cartridge cases before firing. At the same time, the principle of this method are analyzed.

关 键 词：电解法 阳极氧化 紫铜/黄铜弹壳 手印显现 射击前 

分 类 号：DF794.1[政治法律—诉讼法学]