铽三元配合物悬浮液在潜在手印显现中的应用研究  

Application Research of Terbium Ternary Complexes Suspension in Latent Fingerprints Development

作　　者：樊俊杰 辛翠[1] 方赟卓 杨泽琛 李娜 Fan Junjie;Xin Cui;Fang Yunzhuo;Yang Zechen;Li Na(Department of Criminal Science and Technology,Hunan Police College,Changsha 410138,China)

机构地区：[1]湖南警察学院刑事科学技术系,湖南长沙410138

出　　处：《山东化工》2023年第7期24-26,共3页Shandong Chemical Industry

基　　金：2021年度大学生创新创业训练计划项目(S202111534009);湖南省教育厅科研项目优秀青年课题(20B209)。

摘　　要：以铽为中心配体,对氯苯甲酸和邻菲罗啉分别为第一配体、第二配体,采用水热法合成出性能优异的铽三元新型稀土荧光配合物,将其与阳离子表面活性剂十二烷基三甲基溴化铵、蒸馏水按照相应的配比进行混合,配制成新型荧光悬浮液,并经过一系列条件(表面活性剂浓度、显现时间、浸洗方式)优化,成功应用于陈旧手印的显现技术中。结果表明,在254 nm紫外光的照射下,显现后的手印发出明亮的绿色荧光,背景干扰较低,纹线反映清晰流畅,细节特征反应明显。该显现方法适用于光滑非渗透性客体、部分半渗透性客体表面上潜在手印的显现,对陈旧手印具有较好的显现效果。Terbium was used as the central ligand,p-chlorobenzoic acid and o-phenoline as the first and second ligands respectively,Terbium ternary new rare earth fluorescent complex with excellent performance was synthesized by hydrothermal method.The new fluorescent suspension was prepared by mixing it with cationic surfactant dodecyl trimethylammonium bromide and distilled water according to the corresponding ratio.After a series of conditions(surfactant concentration,development time,and immersion method)optimization,it was successfully applied to the development technology of old fingerprints.The results show that under the irradiation of 254 nm ultraviolet light,the emerging fingerprint emits bright green fluorescence,the background interference is low,the ridges are clear and smooth,and the detail features are obvious.This method is suitable for the development of latent fingerprints on the surface of smooth non-permeable objects,partially semi-permeable objects,and it also has a good development effect on old fingerprints.

关 键 词：手印显现 荧光配合物 潜在手印 悬浮液 

分 类 号：TQ133.3[化学工程—无机化工]