探索加速从水溶液中检测化物质的质谱探测方法,使用间接的,吸附剂促进的溶解离离子化
Nathan R Bays1, Samantha M Kruse1, Mohammad Shohel1
1Sandia National Laboratories, Albuquerque, New Mexico 87123 United States.
ACS omega
|February 16, 2026
概括
这项研究引入了一种新的,快速且低成本的方法,用于检测水中的 perfluoroalkyl 物质 (PFAS). 间接溶液分析 (ISA) 技术允许快速选供水,使PFAS测试更容易获得.
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
背景情况:
- 越来越需要快速,低成本的水选工具,以检测像 perfluoroalkyl 物质 (PFAS) 这样的持久污染物.
- 目前的PFAS分析方法 (LC-MS) 是耗时且昂贵的,限制了公众对测试的访问.
- PFAS是无处不在的环境污染物,对人类健康有有害影响,这增加了公众对广泛测试的兴趣.
研究的目的:
- 开发和展示一种新的,快速的,低成本的分析方法来检测水性分析物,特别是PFAS.
- 解决目前耗时且成本极高的PFAS检测技术的局限性.
- 为了使供水供应更快,更容易获得的选持久污染物.
主要方法:
- 使用直接从吸附剂表面的脱离电离技术 (DESI和LDI) 探索间接溶液分析 (ISA).
- 选各种吸附材料,包括半孔碳,和金属有机框架 (MOF).
- 在微量水平 (5-100 ppt) 上检测 perfluorooctanoic 酸 (PFOA) 和 perfluoroundecanoic 酸 (PFUnDA) 的 ISA-DESI 的演示.
主要成果:
- 使用ISA-DESI检测PFOA和PFUnDA的度低至5-100 ppt.
- 实现了不到5分钟的快速检测时间,适用于需要快速响应的应用.
- 证明ISA-DESI对一系列环境相关污染物的适用性.
结论:
- 间接溶液分析 (ISA) 提供了一个有前途的方法,用于快速,低成本的PFAS检测在水中.
- 简化样本准备和加速分析使ISA成为识别受污染地点和监测工业废物的宝贵工具.
- 该方法的可访问性和速度可以显著加速质谱PFAS检测,用于更广泛的环境和公共卫生应用.
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