一种简单的电压测量方法,通过确定纤维素的测量来评估射击距离
Antonella Profumo1, Andrea Capucciati1, Alessia Mattino1
1Dipartimento di Chimica, Università degli Studi di Pavia, 27100 Pavia, Italy.
Talanta
|August 11, 2023
概括
在枪击目标中对酸纤维素 (NC) 的法医分析至关重要. 一种新的微分脉冲电量计方法量化NC,通过分析其度衰减在目标上,使得射击距离的估计.
科学领域:
- 法医科学 法医科学 法医科学
- 分析化学 分析化学
- 电化学 电化学 电化学
背景情况:
- 亚纤维素 (NC) 是小型枪支弹药中的主要推进剂.
- 在射击过程中喷射出NC粒子,可以在目标上找到.
- 定量分析和电化学测定NC用于法医目的是不发达的.
研究的目的:
- 开发一种定量差脉冲电压测量方法,用于法医目标中的NC分析.
- 通过测量目标上的NC度衰变来估计射击距离.
- 评估方法的性能和潜在的干扰.
主要方法:
- 差异脉冲电压测量 (DPV) 用于定量NC分析.
- 这种方法使用了乙二/乙醇/甲溶剂系统.
- 弹药在不同距离 (5-120厘米) 发射,以创建校准曲线.
主要成果:
- 该DPV方法实现了量化限值 (LOQ) 的4毫克L-1和线性到2000毫克L-1.1.
- 建立了一个校准曲线,将NC度衰减与射击距离相关联.
- 评估了潜在干扰物的影响,如水,酸甘,酸甘和酸盐.
结论:
- 成功开发了一种新而敏感的电化学方法,用于法医应用中量化纤维素.
- 该方法可以根据对目标的剩余NC度来估计射击距离.
- 这种技术为涉及枪支证据的法医调查提供了有价值的工具.
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