稀土钐荧光配合物显现潜手印的综合实验设计与教学分析  

Design of Comprehensive Experimental Teaching for Rare Earth Ternary Fluorescent Complexes to Develop Latent Fingerprints

作　　者：辛翠[1] XIN Cui(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,长沙410138

出　　处：《实验室研究与探索》2024年第10期130-135,共6页Research and Exploration In Laboratory

基　　金：湖南省教育厅科学研究项目优秀青年课题(20B209);湖南省教育科学“十四五”规划课题(ND212164);湖南省教改课题(HNJG-2021-1150);湖南警察学院科研课题(2024YB07)。

摘　　要：为提升公安专业学生综合和创新能力,合成了以稀土钐为中心离子,具有敏化作用的惰性离子镧、钆、钇掺杂的荧光配合物。测定该物质的荧光性能,并用于犯罪现场客体表面潜在手印显现。结果表明,合成的荧光配合物在365 nm紫外灯照射下发出明亮的红色荧光;Sm_(0.5)Gd_(0.5)TTA_(3)(o-Phen)的发光性能更优越,显现手印表现出优异的对比度、选择性和适用性。实验内容涉及配合物的合成、产物荧光性能测定、潜在手印显现等,体现了较强的综合性和创新性。In order to enhance the comprehensive and innovative abilities of public security major students,a fluorescent complex was designed with Sm3+and inert ions of La3+,Gd3+,and Y3+with a sensitizing effect.The fluorescence properties of the synthesized substances were evaluated,and the powder exhibiting the best fluorescence performance was selected for potential fingerprint development on crime scenes.The results demonstrate that the synthesized fluorescent complex emits bright red fluorescence under 365 nm ultraviolet light.The luminescence performance of Sm_(0.5)Gd_(0.5)TTA_(3)(o-Phen)is superior,and the fingerprint development shows excellent contrast,selectivity,and applicability.The experimental procedures involve synthesis of the complex,evaluation of its fluorescence properties,and potential fingerprint development,which reflects strong comprehensiveness and innovation.The scientific implementation and comprehensive evaluation has achieved the goal of enhancing students’professional skills and refining their thinking quality.

关 键 词：荧光配合物 手印显现 科学评价 创新思维 

分 类 号：G642[文化科学—高等教育学]