靶向生物痕迹发现仪在接触类生物检材案件中的应用  

Biological Evidence-targeting Device Applied into Discovering“Touch”Biological Materials

作　　者：徐海军 叶志鹏 钱利峰 朱文浩 霍塞虎[2] XU Haijun;YE Zhipeng;QIAN Lifeng;ZHU Wenhao;HUO Saihu(Forensic Science Service of Haining Public Security Bureau,Haining 314400,Zhejiang,China;Zhejiang Police College,Hangzhou 310053,China)

机构地区：[1]海宁市公安司法鉴定中心,浙江海宁314400 [2]浙江警察学院,杭州310009

出　　处：《刑事技术》2020年第6期640-643,共4页Forensic Science and Technology

摘　　要：目的探讨靶向生物痕迹发现仪在公安实战中的应用价值。方法在一起抢劫案现场提取的砖头上喷洒显影试剂,暗室环境下激光照射,经滤光发现荧光斑迹后,用植绒拭子提取,随后进行DNA检验,验证提取斑迹位置是否准确。结果靶向生物痕迹发现仪准确显示了嫌疑人在砖头上的触摸部位,DNA检验证实,两处荧光斑迹处擦拭物均检出单一有效STR分型,成功比中DNA数据库中的犯罪嫌疑人。结论靶向生物痕迹发现仪对发现、提取接触类检材如石头、砖块等载体上的触摸痕迹物证有较高的导引性,对法医DNA检验鉴定有应用价值。Objective To explore the value of biological evidence-targeting device for public security to combat against crimes.Methods Onto a brick seized from a robbery case,the developing reagent was sprayed and irradiated with laser so that the fl uorescence-emitting spots were observed through glasses-wearing eyes in dark room.From the fl uorescent spots,the forensic fl ocking swab was used to extract the potential biological evidential materials that were afterwards undergone into DNA test for verifi cation of the evidence location.Results The biological evidence-targeting device did expose the accurate positions where the crime suspect touched the brick because a same single and valuable STR-genotype had been successfully detected from the fl uorescence-emitting spots(the touch sites),with the suspect having successfully been matched in DNA database.Conclusion Biological evidence-targeting device is valuable to fi nd the“touch”forensic evidence from biological materials on the carriers(e.g.,stones and bricks),showing indicative of orientation for forensic DNA examination and identifi cation.

关 键 词：法医遗传学 靶向生物痕迹发现仪 接触类生物检材 DNA检验 

分 类 号：DF795.2[医药卫生—法医学]