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基于酸盐的法医血液替代品,模仿整个血液凝固和干燥特性在滴水污点和池中

Erin Giroux¹, Shaijieni Kannan¹, Theresa Stotesbury²

¹Applied Bioscience Graduate Program, Ontario Tech University, 2000 Simcoe St N, Oshawa, ON, Canada.

Science & justice : journal of the Forensic Science Society

|January 8, 2026

概括

法医血液替代品 (FBS) 被测试了干燥动态. 配方FBS2更好地模仿全血凝固,使FBS1和FBS2都适合用于血液染色模式分析培训和研究.

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
流体动力学流体动力学

背景情况:

法医血液替代品 (FBS) 为训练和研究提供了比真血更好的优势.
之前没有研究过FBS的干燥动态.
了解干燥行为对于准确的血迹模式分析至关重要.

研究的目的:

为了比较两种基于酸盐的水凝FBS配方 (FBS1和FBS2) 的干燥动态与全牛血液.
评估这些FBS配方适合于血液染色模式分析培训和研究.
研究如何修改聚合物和交叉连接剂度影响FBS干燥行为.

主要方法:

制备了两种基于酸盐的水凝FBS配方 (FBS1和FBS2),粘度不同.
滴滴斑点和池 (2,10,500微升) 的FBS和牛血沉积在玻璃瓦和棉衣上.
观察了干燥动态,并通过风力测量表征了流体特性 (振荡幅度,流量和时间扫描).

主要成果:

在无孔上,FBS在很大程度上复制了血液的早期干燥阶段,但缺乏最后阶段的裂和解结.
与FBS1.1相比,FBS2的干燥特性更接近全血,特别是在池中.
在多孔棉球衣上,FBS的两种配方都类似于血液,干燥更轻,但有一个深色的边缘.

结论:

修改聚合物和离子交叉连接剂度可以操纵FBS的物理性质,在染色过程中模仿血液.
FBS1适合滴滴斑点,而FBS2更好地模仿整体血液在更大的斑点凝固期间的粘性行为.
这两种FBS配方都适合在法医培训和研究中生成血迹,FBS2显示了对聚合污点的改进模仿.

关键词:

血迹的干燥血迹的干燥血液污点模式分析分析.法医生物材料法医生物材料法医血液替代品法医血液替代品法医科学法医科学水凝是一种水凝.

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