通过光谱方法和化学测量对基板上的生物流体污点进行法医分析:一篇综述
Cristina Cano-Trujillo1, Carmen García-Ruiz1, Fernando E Ortega-Ojeda2
1Universidad de Alcalá, Departamento de Química Analítica, Química Física e Ingeniería Química, Ctra. Madrid-Barcelona km 33,6, 28871, Alcalá de Henares, Madrid, Spain; Universidad de Alcalá, Instituto Universitario de Investigación en Ciencias Policiales, Libreros 27, 28801, Alcalá de Henares, Madrid, Spain.
Analytica chimica acta
|November 3, 2023
概括
光谱技术与化学测量技术相结合,提供了一种快速,灵敏和非破坏性的方法,用于分析犯罪现场的体液污点. 本综述强调了有效的现场检测技术,改善了法医调查.
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:
- 身体液体污点是重要的法医证据,提供有关犯罪现场的个人和事件的重要信息.
- 多孔基板和环境因素可能会使这些污点的分析变得复杂.
- 光谱学与化学计量学相结合,为染色分析提供了一个有希望的,非破坏性的方法.
研究的目的:
- 审查用于分析生物流体染色物的光谱技术和化学测量方法.
- 根据基质特性,环境条件,老化和干扰物质来评估技术.
- 在法医调查中确定最佳的非破坏性方法,以在现场检测生物污点.
主要方法:
- 关于光谱技术 (拉曼,ATR FTIR,HSI-NIR,SERS) 和化学测量的综合文献综述.
- 对研究的分析,重点关注影响生物流体染色的各种基质和条件.
- 评估技术适用于识别生物流体,混合物和干扰物质的适用性.
主要成果:
- 拉曼光谱和减弱总反射里埃变换红外光谱 (ATR FTIR) 是最常用的技术.
- 还采用了其他方法,如近红外高光谱成像 (HSI-NIR) 和表面增强拉曼光谱 (SERS).
- 该审查提供了选择最有效的非破坏性技术的标准,用于现场污点检测.
结论:
- 频谱和化学测量方法的适当应用增强了刑事调查的法医科学支持.
- 非破坏性分析保护了证据的完整性,以便进行潜在的进一步检查.
- 这些方法可以通过有效的样本选择来加快调查.
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