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枪支残留的高级法医检测使用发光兰坦化金属有机框架

Mayukh Chatterjee¹, Subhashis Samanta¹, Gaurab Som¹

¹Department of Forensic Science and Technology, School of Applied Science and Technology, Maulana Abul Kalam Azad University of Technology, 741249, West Bengal, India.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy

|February 26, 2026

概括

这项研究引入了一种新型发光 lanthanide金属有机框架 (Ln-MOF) 用于检测枪支残留物 (GSR) 有机分析物. 开发的以加多为基础的复合颗粒提供了快速,便携和灵敏的GSR现场检测,这对于法医微分析至关重要.

科学领域:

法医科学法医科学法医科学
材料科学材料科学材料科学
分析化学分析化学

背景情况:

枪支相关犯罪的全球增长需要先进的现场部署的分析工具来检测火药残留物 (GSR).
现有的使用化金属有机框架 (Ln-MOFs) 的方法通常涉及将其纳入弹药中,限制了更广泛的应用.
对于法医微分析而言,使用常规弹药检测GSR的直接分析接口的需求至关重要.

研究的目的:

开发和评估新型发光Ln-MOFs,用于直接检测火药残留物 (OGSR) 的有机分析物.
建立常规弹药Ln-MOF和OGSR之间的直接分析接口.
为了创建一个现场部署,便携和敏感的方法,用于事故后的GSR检测.

主要方法:

合成了九种发光的Ln-MOFs使用溶热方法与各种兰化物前体.
对Ln-MOFs在与OGSR相互作用时进行光火的评估.
开发一种低成本的聚乙烯-[Gd(NDC]复合颗粒,以提高现场应用性.
使用FTIR,XRD,BET,TGA和DLS,对基于加多的框架 (Gd(NDC) 进行全面的描述.

主要成果:

基于加多的框架[Gd(NDC]在GSR的存在下显示出显著的光火.
使用[Gd(NDC]框架实现了OGSR大约1ppm的低检测极限.
开发的聚乙烯-[Gd(NDC) ]复合颗粒能够快速,便携,且样本密集度最小的OGSR检测.
发现Gd (NDC) 的结构参数与其发光传感性能直接相关.

结论:

发光的Ln-MOF,特别是以加多为基础的[Gd(NDC],对敏感的OGSR检测具有很高的潜力.
开发的复合颗粒为快速,基于现场的GSR法医微分析提供了实用解决方案.
这种方法将分子光谱学与法医科学联系起来,提高了分析常规弹药发射的SRG的能力.

关键词:

美国的FTIR是FTIR.法医科学法医科学这是GSR的GSR.这是一种Ln-MOF.发光标记是发光的标记.在NTA中,NTA是NTA.XRD XRD 在线观看 [Gd(NDC) ]是指Gd中的一个NDC.

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