502胶熏显手印的Ardrox荧光染色技术研究

摘要

ABSTRACT:ObjectiveTo determine the dyeing effect of Ardrox fluorescent liquid on non-porous surfaces after development of fingerprints by cyanoacrylate glue.MethodsStudy was carried out to establish the method to enhance the fingermarks fumed by cyanoacrylate glue using Ardrox fluorescent liquid. Comparative experiments were performed on 12 kinds of common plastic, glass or other non-porous objects with rhodanmine 6G, BBD and gentian violet solution, respectively. All experiments were ensured to be coupled with the most optimized conditions and fuming time. Fingermark aging period test of 1, 3, 5, 7 and 15 days with cyanoacrylate-Ardrox approach was demonstrated as well.ResultsOn plastic, glass and other non-porous substrates, the cyanoacrylate glue-Ardrox fluorescent liquid method had shown the developed images, obviously superior to those with rhodanmine 6G, BBD and gentian violet, with the most signiifcant effects on tinfoil, black plastic bags and zip-top cans. On the surfaces with light or dark colors, Ardrox usually be able to demonstrate the signiifcant effects of ifngermarks except those on disks, of which the background irradiated by UV light weakened the contrast of relfection. Ardrox lfuorescent liquid should be used as quickly as possible, and the best performance appeared within 24 hours after made up. The pictures needed to be taken immediately right after dyeing. According to the data, samples left over for 15 days or less could be clearly developed, while the effects of dyeing reduced signiifcantly after 15 days.Conclusions The developing method with cyanoacrylate glue and Ardrox lfuorescent liquid features reliability, distinct imaging and high lfuorescence.%目的：探究在常见塑料材质、玻璃等非渗透性客体上，502胶熏显后用Ardrox荧光液染色显现潜在手印方法。方法收集12种常见塑料材质、玻璃等非渗透性客体，用Ardrox荧光液染色与罗丹明6G、BBD、龙胆紫进行显现潜在手印对比实验。同时测试Ardrox荧光液染色最佳遗留时间，采取控制变量，改变单一变量，选取显现效果最好的锡箔纸作为实验检材，分别在遗留1、3、5、7、15 d后进行显现。结果在大多数常见塑料材质、玻璃等非渗透客体上，502胶- Ardrox荧光液显现效果优于罗丹明6G、BBD和龙胆紫，在锡箔纸、黑塑料袋、易拉罐上效果最好；在浅色客体或深色客体上，Ardrox荧光液均能取得很好的显现效果，光盘上的显现效果不佳。最佳遗留时间测试结果表明，Ardrox荧光液显现指纹，遗留15 d以内的样本都可以很清晰的显现出来，超过15 d，显现效果明显减弱。结论502胶- Ardrox荧光液显现法显现率高、荧光强。