检测硬表面微量甲基胺污染的策略:评估商业上可用的假设测试和基于实验室的LC-MS/MS方法的实际性能
William Naviaux1,2, Curtis Hedman3, Heather Barkholtz1,4
1Forensic Toxicology Section, Environmental Health Division, Wisconsin State Laboratory of Hygiene, Madison, Wisconsin, USA.
Journal of forensic sciences
|February 14, 2024
概括
商业上可用的假设测试套件可以在表面上检测微量甲基胺,检测极限 (LOD) 从0.10-15.00μg/样本. 一种实验室液体染色学-并联质谱法 (LC-MS/MS) 方法提供较低的LOD (0.05μg/样本) 可靠检测.
科学领域:
- 环境科学 环境科学
- 法医科学 法医科学 法医科学
- 分析化学 分析化学
背景情况:
- 娱乐性使用甲基胺导致住房污染.
- 检测这种污染对急救人员和公共卫生官员来说是一项挑战.
- 假定测试套件用于初步查甲基胺存在.
研究的目的:
- 评估商业上可用的推测性测试套件的检测极限 (LOD).
- 为了将假设测试的性能与经过验证的基于实验室的液态染色学三重四极质谱仪 (LC-MS/MS) 方法进行比较.
- 为推测性测试提供成本效益数据,以帮助利益相关者决策.
主要方法:
- 在硬表面 (Pyrex Petri盘) 创建了模拟的甲基胺污染.
- 商业上可用的假设测试套件是按照制造商的指示使用的.
- 一种基于实验室的LC-MS/MS方法被开发和验证用于微量甲基胺量化.
主要成果:
- 大多数假设性测试检测到微量甲基胺,LOD范围从0.10到15.00μg/样本.
- 通过LC-MS/MS方法证明了较低的LOD为0.05μg/样本,量化极限为0.10μg/样本.
- 假设的测试成本差异很大,从每次测试的几美元到几十美元.
结论:
- 假定测试套件通常有效检测硬表面的甲基胺的痕迹.
- LC-MS/MS方法提供了更敏感和潜在可靠的替代方案,特别是当污染物干扰假设测试时.
- 利益相关者有多种选择来评估甲基胺污染,平衡敏感性,成本和可靠性.
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