Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, the Netherlands.
Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, the Netherlands; Hochschule Fresenius, University of Applied Sciences, Institute for Analytical Research, Limburger Strasse 2, 65510 Idstein, Germany.
Sci Total Environ. 2023 Sep 10;890:164420. doi: 10.1016/j.scitotenv.2023.164420. Epub 2023 May 24.
A wide range of PFAS residues were studied in an aquifer used for drinking water production which was affected by historical PFAS contamination from a landfill and military camp. Samples were taken at three monitoring and four pumping wells at different depths ranging from 33 to 147 m below the land surface and analysed for a series of 53 PFAS (C2-C14) and PFAS precursors (C4-C24). A comparison of results to earlier research from 2013, with a more limited range of PFAS, showed decreasing concentrations and migration of PFAS with increasing depth and distance from the contamination source. The PFAS profile and branched/linear isomer ratio are used as source characterization tools. The landfill was confirmed to contaminate the groundwater in both monitoring wells, while the military camp was indicated as a probable source for PFAS observed in the deep sampling points of one of the monitoring wells. Pumping wells used to produce drinking water are not yet affected by these two PFAS sources. In one of the four sampled pumping wells, a different PFAS profile and isomer pattern was observed, which indicated a different but yet unknown source. This work shows the necessity of implementing regular screening to identify potential (historical) PFAS sources to be able to prevent future contaminant migration nearby and towards drinking water abstraction wells.
研究了一个用于饮用水生产的含水层中的多种 PFAS 残留，该含水层受到历史上来自垃圾填埋场和军事营地的 PFAS 污染的影响。在地表以下 33 至 147 米的不同深度，从三个监测井和四个抽水井中采集了样本，并对 53 种 PFAS（C2-C14）和 PFAS 前体（C4-C24）进行了分析。将结果与 2013 年的早期研究进行了比较，早期研究的 PFAS 范围更有限，结果表明随着深度和与污染源的距离的增加，PFAS 的浓度和迁移量逐渐降低。PFAS 分布和支化/线性异构体比例可用作源特征描述工具。证实垃圾填埋场污染了两个监测井中的地下水，而军事营地被认为是一个监测井中深采样点观察到的 PFAS 的可能来源。用于生产饮用水的抽水井目前尚未受到这两个 PFAS 源的影响。在四个采样抽水井中的一个中，观察到了不同的 PFAS 分布和异构体模式，这表明存在不同但未知的来源。这项工作表明，有必要实施定期筛查，以确定潜在的（历史）PFAS 来源，从而能够防止附近和饮用水抽取井附近未来的污染物迁移。
