金属有机框架化合物Eu_2(bdc)_3与Tb_2(bdc)_3显现手印的研究  

Fingerprint Detection by Metal Organic Framework(MOF) Resulted from Eu_2(bdc)_3 or Tb_2(bdc)_3

作　　者：高无敌 高峰 薛静[3] 王子政[3] 马荣梁[3] GAO Wudi;GAO Feng;XUE Jing;WANG Zizheng;MA Rongliang(School of Criminal Science and Technology,People’s Public Security University of China,Beijing 100038,China;Institute of Forensic Science,Ministry of Public Security,Beijing 100038,China;The Maritime Police Academy,Chinese People’s Armed Police Force,Ningbo 315801,Zhejiang,China)

机构地区：[1]中国人民公安大学刑事科学技术学院,北京100038 [2]中国人民武装警察部队海警学院,浙江宁波315801 [3]公安部物证鉴定中心,北京100038

出　　处：《刑事技术》2019年第1期26-29,共4页Forensic Science and Technology

基　　金：国家自然科学基金青年项目(No.11505194);公安部痕迹科学与技术重点实验室科技强警基础专项项目(No.2016GABJC21)

摘　　要：目的探索两种金属有机框架化合物(MOF)—Eu_2(bdc)_3、Tb_2(bdc)_3对多种客体上油/油汗手印的显现效果。方法将配制好的稀土金属离子溶液与有机配体溶液等量混合后滴加在遗留了手印的不同客体表面,作用一定时间使其生成MOF分子,然后在短波紫外光源下观察手印纹线。结果经MOF试剂Eu_2(bdc)_3、Tb_2(bdc)_3显现后,在多种非渗透性客体和半渗透性客体上均观察到了清晰连贯的纹线,而渗透性客体上观察不到纹线。结论MOF试剂Eu_2(bdc)_3、Tb_2(bdc)_3的显现效果因客体不同而存在差异,其中对非渗透性客体和半渗透性客体上的油/油汗手印具有不错的显现效果,对渗透性客体上的手印无法显现。Objective To explore the effect of metal organic framework(MOF)resulted from Eu2(bdc)3 or Tb2(bdc)3 on detecting the eccrine/sebaceous fingerprint on various objects.Methods Two immediate-mixing solutions(europium/terbium chloride solution mixed with disodium terephthalate solution)were to bring about the formation of MOF precursor molecules that were at once dropped onto the fingerprint-deposited surface,causing the creation of mature MOF molecules when the fingerprint-contained proteins were coupled with MOF precursors.The fluorescence-emitting MOF molecules finally make the fingerprint detected under UV light.Results The experimental results show that clear and coherent ridges are observed on a variety of both non-porous and semi-porous surfaces at the disposal of MOF from Eu2(bdc)3/Tb2(bdc)3,yet none on the porous surfaces.Conclusions MOF,here resulted from Eu2(bdc)3/Tb2(bdc)3,is an effective reagent for detection of eccrine/sebaceous fingerprints on non-porous and semi-porous surfaces.

关 键 词：金属有机框架化合物 Eu2(bdc)3 Tb2(bdc)3 油/油汗手印 非渗透性客体 半渗透性客体 渗透性客体 手印显现 

分 类 号：DF794.1[政治法律—诉讼法学]