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在被AFFF污染的土壤中实施PFAS的矩阵匹配半量化

Catharina Capitain¹, Melanie Schüßler¹, Boris Bugsel¹

¹Environmental Analytical Chemistry, Department of Geosciences, University of Tübingen, Schnarrenbergstraße 94-96, 72076 Tübingen, Germany.

Environmental science & technology

|April 3, 2025

概括

这项研究引入了一种新的方法,用于在不需要特定标准的情况下半量化每和多基基物质 (PFAS). 这种方法准确地测量了像土壤这样的环境样本中的更广泛的PFAS污染.

科学领域:

环境化学环境化学
分析化学分析化学

背景情况:

和多醇基物质 (PFAS) 是广泛存在的环境污染物.
缺乏分析标准阻碍了全面的PFAS分析,特别是在复杂的矩阵中.
非目标查 (NTS) 对于识别未知的污染物至关重要.

研究的目的:

为PFAS的NTS开发和验证一种新的半量化方法.
为了应对大多数PFAS有限的分析参考标准的挑战.
评估受水性薄膜形成泡 (AFFF) 影响的土壤中的PFAS污染.

主要方法:

结合矩阵匹配校准与电离类特定的平均校准曲线 (ACC).
开发了碳酸,硫酸,硫胺和阴离子PFAS的ACC.
将该方法应用于来自AFFF污染地点的土壤样本.

主要成果:

对于半量化PFAS实现了高精度,中位数绝对精度系数低于2.27.
半量化 96 种初步识别的 PFAS 和量化 28 种化合物.
证明了半量化度往往超过了目标分析物的度.
在与可提取的有机 (EOF) 相比验证时,达到102%的封闭质量平衡.

结论:

这种新型的半量化方法可以在复杂的环境矩阵中进行全面的PFAS评估.
这种方法显著扩大了NTS用于环境监测和风险评估的范围.
这种方法对于了解PFAS污染的全部程度至关重要,特别是在AFFF影响的地点.

关键词:

AFFF AFFF 是一个非常有价值的组织.人力资源管理系统HRMS 在PFAS中,有很多方法.半定量化半定量化半量化土壤土壤土壤土壤土壤

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