技术性开锁的扫描电镜/能谱仪检验研究

Technical Unlocking Tested by Scanning Electron Microscope/Energy Disperse Spectrometer

目的为认定无门窗损坏的入室盗窃案件中是否使用铝箔纸开锁提供技术支撑。方法模拟入室盗窃案件的现场,将被盗开的锁与同型号的新锁进行比对实验,利用扫描电子显微镜/能谱仪进行金属元素的检测。结果被盗弹子表面和锁芯中检出铝元素,空白样本未检出铝元素。结论对常见卡巴锁被技术性开锁后的附着物进行比对检验,可为判定开锁方式提供技术支撑。

Objective To detect whether tinfoil was used for unlocking in a burglary where no damage occurred to the doors and windows.Methods Through one burglary scene simulated,the sneakily-unlocked lock was analyzed against the kind-same new lock(control sample)by scanning electron microscope/energy disperse spectrometer(SEM/EDS)to detect whether there is the evidential metal left.Results Aluminum element was detected from the sneakily-unlocked lock,yet none of the control sample.Conclusions The SEM/EDS is able to detect the leftover metal from one sneakily-unlocked lock,therefore capable of providing support for solving the technical unlocking cases.