在现场部署的被动采样器中, perfluorinated carbon 链的长度推动了多种 perfluoroalkyl 物质的吸收
Matthew Dunn1, Jitka Becanova1, Simon Vojta1
1Graduate School of Oceanography, University of Rhode Island.
概括
这项研究对微孔聚乙烯管 (MPT) 的被动采样器进行了校准,以检测水中的各种和多基物质 (PFAS). MPT采样器准确地捕获了目标PFAS,可疑PFAS和可提取的有机 (EOF),提高了环境监测能力.
科学领域:
- 环境化学
- 分析化学
- 环境科学
背景情况:
- 和多基物质 (PFAS) 是具有广泛不良健康影响的持续性环境污染物.
- 由于PFAS的化学结构多样,因此需要全面的检测方法.
- 水性薄膜形成泡 (AFFF) 是各种水体中PFAS污染的重要来源.
研究的目的:
- 校准微孔聚乙烯管 (MPT) 的被动采样器以检测广泛的PFAS化合物.
- 评估采样器在各种水环境中的性能,包括地下水,河流和河口.
- 评估采样器捕获目标PFAS,可疑PFAS和可提取器官 (EOF) 的能力.
主要方法:
- 在受污染的地下水,淡水河流和河口中部署1-2周的MPT被动采样器.
- 在被动和抽取样本上进行了针对性分析,可疑选和可提取器官 (EOF) 分析.
- 对各种PFAS和EOF进行计算的采样率 (Rs),以评估采样器吸收效率.
主要成果:
- 在地下水和河水中测量和估计的EOF采样率在20%的范围内.
- 疑似PFAS的采样率与具有相似化学结构和链条长度的目标PFAS相似.
- 已证明MPT采样者对目标PFAS,可疑PFAS和EOF的可预测吸收.
结论:
- MPT被动采样器有效监测广泛的PFAS,包括目标,可疑和EOF.
- 这种校准扩大了被动采样在环境矩阵中全面评估的实用性.
- 这些发现支持使用MPT采样器来更好地检测和描述PFAS污染.
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