Influence of chain length on field-measured distributions of PFAS in soil and soil porewater

IF 6.6 Q1 ENGINEERING, ENVIRONMENTAL Journal of hazardous materials letters Pub Date : 2023-01-01 DOI:10.1016/j.hazl.2023.100080
Mark L. Brusseau
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链长对土壤和土壤孔隙水中PFAS田间实测分布的影响
多种PFAS测定的土壤和孔隙水浓度汇编自三个实地研究。土壤:孔隙水浓度比被证明是所有三个数据集的摩尔体积的函数。三组野外测量结果之间存在显著的一致性,表明PFAS在三种土壤系统中的分布表现出相似的总体滞留量。考察了固相吸附和空气-水界面吸附对总截留量的相对贡献。对于长链PFAS,气-水界面吸附的贡献大于固相吸附,而对于短链PFAS,气-水界面吸附的贡献小于固相吸附。这些结果表明,当固相吸附功能偏离空气-水界面吸附功能时,两种过程的相对贡献随特定PFAS的不同而变化。例如,当吸附受到疏水相互作用以外的加成机制的影响时,或者当吸附和/或吸附是非线性的时,就可能发生这种情况。基于所有三个数据集的结果,对于短链PFAS,土壤浓度可能小于孔隙水浓度。相反,对于长链PFAS,土壤浓度通常显著大于孔隙水浓度。本研究结果对表征和评价全氟化钠在渗流带土壤中的分布具有重要意义。
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来源期刊
Journal of hazardous materials letters
Journal of hazardous materials letters Pollution, Health, Toxicology and Mutagenesis, Environmental Chemistry, Waste Management and Disposal, Environmental Engineering
CiteScore
10.30
自引率
0.00%
发文量
0
审稿时长
20 days
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