简易雾化设备在灰尘手印增强中的应用  

Application of Portable Atomization Device in Developing Dust Fingerprints

作　　者：孙凯[1] 吕卓韬 SUN Kai;LV Zhuo-tao

机构地区：[1]浙江警察学院刑事科学技术系,浙江杭州310053 [2]杭州市公安局临平区分局,浙江杭州311199

出　　处：《四川警察学院学报》2021年第5期61-67,共7页Journal of Sichuan Police College

基　　金：2019年浙江省公安厅科技研究项目“简易超声波雾化装置在痕迹显现中的应用研究”(18)。

摘　　要：在现场灰尘手印勘验中,技术人员往往利用胶带转印后再用染色剂滴显的方法对手印进行显色增强。然而,采用这种方法会导致染色液堆积和染色过度等问题,而且滴显操作后还需进行吹风机烘干,这在现场勘验中操作并不方便。实验发现:采用小型加湿器改制的雾化设备可较好地增强灰尘转印手印,显现的灰尘减层手印更为均匀清晰,在显现过程中未发生扩散现象,且无需吹风机烘干;如果使用浓度为0.5%的龙胆紫溶液或浓度为1%的孔雀绿溶液进行雾化显现,效果更佳。In the criminal scene investigation,dripping method is often used to dye and develop dust fingerprints lifted by tapes.However,liquid accumulation or overstain may happen during the operation of dripping stains.In addition,electronic dryer should be used to dry and develop the lines of fingerprint clearly after dyeing,which is inconvenient to operate.A portable ultrasonic atomization device modified from humidifier can dye and develop dust fingerprints with reduced layer clearly and evenly,which could be a substitution for dripping method.Furthermore,this device can develop fingerprints with no diffusion,and can be used solely without dryers.Better results can be achieved with 0.5 crystal violet staining solution or 1%malachite green solution in dyeing dust fingerprints.

关 键 词：超声波雾化 灰尘减层手印 手印显现 手印转印染色 

分 类 号：D918.91[政治法律—法学]