一个新的LIBS传感器用于犯罪现场的样本检查
Violeta Lazic1, Fabrizio Andreoli2, Salvatore Almaviva1
1Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Laboratory FSN-TECFIS-DIM, Via Enrico Fermi 45, 00044 Frascati, Italy.
Sensors (Basel, Switzerland)
|March 13, 2024
概括
开发了一种新的紧型激光诱导分解光谱 (LIBS) 传感器,用于犯罪现场分析. 这种便携式LIBS设备对大多数元素的检测极限低于10皮克克,有助于法医调查.
科学领域:
- 法医科学 法医科学 法医科学
- 分析化学 分析化学
- 频谱学是一种光谱学.
背景情况:
- 执法机构需要在犯罪现场进行快速的现场材料表征.
- 现有的方法可能耗时或需要将样品运送到实验室.
- 激光诱导分解光谱 (LIBS) 为元素分析提供了潜力.
研究的目的:
- 为法医应用开发和描述一个紧的LIBS传感器.
- 为了实现桌面和手持操作,实现多功能犯罪现场分析.
- 评估传感器的性能,包括检测极限和深度分析能力.
主要方法:
- 开发一个紧的,电池驱动的LIBS传感器,内置摄像头和照明.
- 优化LIBS获取参数用于元素分析.
- 对各种法医相关样本进行测试,包括指纹,土壤,枪支残留物和涂层塑料.
主要成果:
- 在晶片上的纳米绘图痕迹上,达到低于10皮克克拉的元素检测极限.
- 对指纹,土壤和枪支残留等各种材料的成功分析.
- 成功地在涂层塑料上进行了深度分析,区分了所有四个汽车油漆层.
结论:
- 开发的紧型LIBS传感器适用于现场法医材料表征.
- 该传感器为犯罪现场调查提供高灵敏度和多功能操作模式.
- LIBS技术在增强法医分析能力方面表现有前途.
关键词:
在LIBS中,LIBS是指LIBS.犯罪现场的犯罪现场.这些都是指纹,指纹.法医医疗法学 在线枪支残留物 枪支残留物激光光谱学 激光光谱学检测的检测极限.便携式仪器是一种便携式仪器.敏感的敏感的敏感的敏感的痕迹,痕迹的痕迹,就是我们的更多相关视频
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