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对于商业吸附剂的和多基物质 (PFAS) 的吸附亲和力和机制:对被动采样的影响

Sara Ghorbani Gorji¹, Darryl W Hawker², Rachel Mackie¹

¹Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, Brisbane, Australia.

Journal of hazardous materials

|May 31, 2023

概括

这项研究评估了在各种被动采样吸附剂上对per-和多醇基物质 (PFAS) 的吸附. 水友性-脂友性平衡 (HLB) 和离子交换 (AE) 吸附剂在全面的PFAS监测中最有效.

科学领域:

环境化学环境化学
分析化学分析化学
环境科学环境科学

背景情况:

由于它们的广泛存在和持久性,在水生环境中对和多基物质 (PFAS) 的有效监测至关重要.
对于 PFAS 在被动采样装置中使用的吸附材料上的吸附机制和范围的了解有限.

研究的目的:

用11种商业吸附剂研究多种PFAS (阳离子,中性,离子;C3-C16链长) 的吸附行为.
确定最佳的吸附材料,以在各种水生基质中被动取样PFAS,包括复杂的废水样本.

主要方法:

评估了45种不同的PFAS化合物的吸附,使用了11种商业吸附剂类型,包括交叉链接的β-cyclopodextrin聚合物,活性碳,离子交换 (AE),阴离子交换,性-脂性平衡 (HLB) 和非极性吸附剂.
均衡吸附剂-MilliQ水 (MQ) 分布系数 (Kd) 在一个广泛的范围内确定.
在有废水影响的辅助成分的情况下,还评估了吸附性能.

主要成果:

观察到平衡分布系数 (Kd) 的广泛范围,从10^-1.95到10^8.30 mL g^-1不等.
具有基功能的水友性-脂友性平衡 (HLB) 和离子交换 (AE) 吸附剂在采样全套PFAS中表现出最高的有效性.
在废水中,HLB吸附剂的吸附亲和度减少最少,这表明它适用于复杂的矩阵.

结论:

在水生系统中,HLB和AE吸附剂对广泛的PFAS被动采样非常有效.
由于它们对矩阵效应的弹性,HLB吸附剂在废水等复杂矩阵中对PFAS的监测具有前途.
证实了许多PFAS的足够吸收能力,支持它们在被动采样中用于线性吸收分析的应用.

关键词:

集团负责人集团负责人集团负责人 K (((d) 的情况.矩阵效应是一种矩阵效应.perfluorocarbon 的链条长度是多少一个短链的短链.废水矩阵废水矩阵

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