制备Sr2MgSi2O7长余辉显现材料最佳条件的探索  

Study on the Synthesis of SrMgSiOlong Afterglow Material for Fingerprint en Enhancement

作　　者：刘丽[1] 赵东波 尹晓婧 LIU Li;ZHAO Dong-bo;YIN Xiao-jing(Criminal Investigation Police University of China,Liaoning,Shengyang,110035)

机构地区：[1]中国刑事警察学院,辽宁沈阳110035

出　　处：《湖南警察学院学报》2020年第3期36-44,共9页Journal of Hunan Police Academy

基　　金：2018年度中国刑事警察学院研究生创新能力提升项目“基于Eu.Dy共添加的Sr2MgSi2O7长余辉材料在手印显现的应用与优化研究”(2018YCYB2B)。

摘　　要：为了研究制备Sr2MgSi2O7长余辉手印显现材料的最佳反应条件,采用高温固相法对制备该种材料过程中的影响因素分别进行研究。通过对初步制备的Sr2MgSi2O7长余辉显现材料进行余辉性能测试从而得出最佳反应温度、最佳的激活剂配比以及最佳硼酸添加量,然后利用得出的最佳变量制备Sr2MgSi2O7长余辉手印显现材料。利用该种材料对常见客体上指纹进行显现,同时将该种手印显现材料在常见客体上显现的效果与常规粉末在常见客体上的显现效果进行对比,结果表明利用最佳变量制备出的Sr2MgSi2O7手印显现粉末具有良好的效果,在物证提取方面具有潜在的应用价值。In order to study the optimum reaction conditions for the preparation of Sr2MgSi2O7 long-afterglow handprint,the influence factors in the preparation of this material were studied by high-temperature solid-phase method,and the best reaction temperature was obtained by carrying out the afterglow performance test on the preliminarily prepared Sr2MgSi2O7 long-afterglow display material.The optimal activator proportion and the optimum boric acid addition amount are used,and then Sr2MgSi2O7 long-afterglow hand-print developing material is prepared by using the obtained optimal variable.The results show that Sr2MgSi2O7 handprint powder prepared by the best variable has good effect.It has potential application value in material evidence extraction.

关 键 词：长余辉 手印 显现 高温固相法 

分 类 号：D918.3[政治法律—法学]