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无机和有机火药残留物 (GSR) 的时间分析:对法医可行性的影响

Sreelakshmi Krishna¹, Pooja Ahuja²

¹School of Doctoral Studies and Research, National Forensic Sciences University, Gandhinagar, Gujarat, 382007, India.

Forensic science, medicine, and pathology

|June 27, 2025

概括

有机 (OGSR) 和无机 (IGSR) 两种火药残留物 (GSR) 的成分,随着时间的推移和各种存储条件保持稳定. 这一发现支持GSR证据在法医调查中的可靠性,即使分析延迟.

科学领域:

法医科学法医科学法医科学
分析化学分析化学
痕迹证据分析证据分析

背景情况:

枪支残留物 (GSR) 是枪支调查中的关键痕迹证据.
在法医实验室条件下,GSR组件的长期稳定性和降解存在有限的数据.
印度法医实验室的各种存储方法和延迟分析引发了对GSR完整性的担忧.

研究的目的:

为了研究有机 (OGSR) 和无机 (IGSR) 枪支残留成分的稳定性.
评估现实的储存条件和延迟分析对GSR成分的影响.
模拟常见的法医实验室场景,并评估潜在的退化.

主要方法:

在不受控制的环境条件下 (28°C,45%RH) 储存了GSR样本.
对OGSR和IGSR的分析以1,15,30,45,60天的间隔进行.
拉曼光谱法用于OGSR,以及诱导合等离子体质谱法 (ICP-MS) 用于IGSR.

主要成果:

在60天的研究期间,OGSR和IGSR粒子都表现出化学稳定性.
在光谱或元素形状上没有观察到显著的变化.
轻微的IGSR波动是由于粒子分布而不是化学降解.

结论:

在可变的储存和延迟分析条件下,GSR颗粒表现出强度.
标准化的GSR证据处理协议对于一致的法医结果至关重要.
调查结果为GSR存储,保存和分析的指导方针提供了框架,以提高证据价值.

关键词:

降解降解是一种降解.这是GSR的GSR.在ICP-MS中,使用的是ICP-MS.物理化学特性物理化学特性拉曼光谱法拉曼光谱法稳定的稳定性稳定的稳定性

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