展示在水凝中以水为基础输送一种向指纹开发者的氨基酸
Kristen T Clarke1, Scarlet L Hopkins2, Matthew N Krosch3
1Queensland Micro, and Nanotechnology Centre, Griffith University, 170 Kessels Road, Brisbane, QLD 4111, Australia; School of Environment and Science, Griffith University, 170 Kessels Road, Brisbane, QLD 4111, Australia.
Forensic science international
|May 4, 2024
概括
这项研究引入了一种新的基于水的方法,用于在水凝中使用aloxan在纸上可视化指纹. 这种更绿色的方法克服了以前的局限性,可以在没有有害化学物质的情况下清晰地检测的细节.
科学领域:
- 法医科学 法医科学 法医科学
- 化学 化学 化学
- 材料科学 材料科学 材料科学
背景情况:
- 传统的指纹可视化方法使用化学开发者准氨基酸,通常在per-和多醇基物质 (PFAS) 中.
- 由于PFAS正在逐步淘汰,因此需要为法医应用开发更安全,更环保的替代品.
- 基于水的处理是理想的,但面临的挑战是溶解指纹残留物和染料,导致模糊的脊细节.
研究的目的:
- 开发一种更绿色的,基于水的方法来可视化纸上隐藏的指纹.
- 为了克服在水基开发器中溶解指纹组件的挑战.
- 为基于PFAS的指纹可视化技术提供一个可行的替代方案.
主要方法:
- 氨基酸开发剂阿洛克桑在水凝矩阵中的输送.
- 利用指纹残留中的阿洛克桑和氨基酸之间的反应形成有色染料 (murexide).
- 用于指纹可视化,基于水凝的素开发器的优化和表征.
主要成果:
- 使用水基水凝处理,观察到尖而清晰的指纹细节.
- 水凝有效地抑制了反应,防止了素成分和染料产品的溶解.
- 素-氧化物反应产生了可见的彩色染料,证实了成功的指纹可视化.
结论:
- 基于水凝的阿洛克桑传递系统提供了一种有效和可持续的方法,用于在纸上可视化指纹.
- 这种方法绕过了与水基开发者相关的可溶性问题,保留了山脊细节.
- 开发的技术为法医指纹分析提供了一个有希望的绿色替代方案,取代了基于PFAS的危险方法.
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