Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences (SLU), Box 7050, SE-750 07, Uppsala, Sweden.
Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences (SLU), Box 7050, SE-750 07, Uppsala, Sweden.
J Hazard Mater. 2019 Jan 15;362:230-237. doi: 10.1016/j.jhazmat.2018.09.005. Epub 2018 Sep 5.
The aim of this study was to calibrate and apply polar organic chemical integrative samplers (POCIS) to examine 26 per- and polyfluoroalkyl substances (PFASs) in a drinking water treatment plant (DWTP). As a first step, the sampling rates (R) of 14 PFASs were determined in a laboratory calibration study for POCIS-WAX (weak-anion exchange) and POCIS-HLB (hydrophilic-lipophilic balance) (each with a surface area per mass of sorbent ratio of 227 cm g). While most PFASs were still in the linear uptake phase during the 28-day calibration study, R ranged from 0.003 to 0.10 L d for POCIS-WAX and 0.00052 to 0.13 for POCIS-HLB. It is important to note that POCIS-WAX had higher R for short-chain perfluoroalkyl carboxylates (PFCAs) with a perfluorocarbon chain length of C-C and perfluorobutane sulfonate (PFBS) compared with POCIS-HLB. Furthermore, R was significantly positively correlated with the sorbent-water partition coefficient (K) for POCIS-WAX and POCIS-HLB (p < 0.0001). Use of POCIS-WAX and POCIS-HLB in the DWTP showed good agreement with composite water sampling. No removal of PFASs was observed in the full-scale DWTP. Overall, this is the first study of PFAS monitoring in a DWTP using two types of POCIS. The results demonstrate high suitability for future applications.
本研究旨在校准和应用极性有机化学整合采样器（POCIS），以检测饮用水处理厂（DWTP）中的 26 种全氟和多氟烷基物质（PFASs）。作为第一步，在实验室校准研究中，确定了 POCIS-WAX（弱阴离子交换）和 POCIS-HLB（亲水-亲脂平衡）（每个的比表面积与吸附剂质量比为 227cmg）中 14 种 PFASs 的采样速率（R）。虽然在 28 天的校准研究期间，大多数 PFASs 仍处于线性吸收阶段，但 R 范围为 0.003 至 0.10L/d 用于 POCIS-WAX 和 0.00052 至 0.13 用于 POCIS-HLB。需要注意的是，与 POCIS-HLB 相比，POCIS-WAX 对具有 C-C 全氟碳链长的短链全氟烷酸酯（PFCAs）和全氟丁烷磺酸（PFBS）具有更高的 R。此外，R 与 POCIS-WAX 和 POCIS-HLB 的吸附剂-水分配系数（K）呈显著正相关（p<0.0001）。在 DWTP 中使用 POCIS-WAX 和 POCIS-HLB 与复合水样采集结果吻合良好。在全规模 DWTP 中未观察到 PFASs 的去除。总体而言，这是首次使用两种类型的 POCIS 对 DWTP 中的 PFASs 进行监测的研究。结果表明，该方法非常适用于未来的应用。
