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替代表面活性剂对物理开发剂配方性能的影响
Morgaine Sharp1, Scott Chadwick2, Sebastien Moret2
1Centre for Forensic Science, University of Technology Sydney, Broadway, NSW 2007, Australia; Forensic Evidence & Technical Services Command, NSW Police Force, NSW, Australia.
Forensic science international
|August 22, 2025
概括
在物理开发器 (PD) 解决方案中,Tween® 20 是对环境有害的 Synperonic® N 表面活性剂的有效替代品,用于隐藏指纹检测. 这项研究证实了它在澳大利亚的表现,为案例工作提供了更安全的替代方案.
科学领域:
- 法医科学
- 化学学
背景情况:
- 物理开发器 (PD) 对于检测多孔表面上的隐藏指纹至关重要.
- 由于环境问题,Synperonic® N是PD的关键表面活性剂,正在逐步淘汰.
- 澳大利亚对PD替代品的比较研究有限.
研究的目的:
- 将三种含有Synperonic® N,Tween® 20和DGME表面活性剂的替代物理开发剂 (PD) 配方的疗效进行比较.
- 在澳大利亚背景下评估这些配方,考虑各种捐赠者,枯竭,基质和指纹年龄.
- 在法医案件中确定适合和环保的Synperonic® N替代品.
主要方法:
- 在不同条件下开发和评估了3000多个指纹.
- 使用堪培拉大学和修改后的应用科学与技术中心 (CAST) 尺度对配方的性能进行了分级.
- 在历史文件 (1950-1980年代) 上进行了伪操作试验.
主要成果:
- 这种Tween® 20配方显著优于Synperonic® N和DGME配方.
- Tween® 20产生的"CAST 4"指纹数量是Synperonic® N的三倍,是DGME的五倍.
- 这种Tween® 20配方的性能与原始的Synperonic® N配方相美.
结论:
- 在物理开发解决方案中,Tween® 20是Synperonic® N的合适和有效替代表面活性剂.
- 这一发现解决了文献上的差距,并为澳大利亚的法医案例提供了实用,环境更安全的选择.
- 验证Tween® 20确保在隐藏指纹检测中保持有效性,同时减轻环境风险.
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