DOI: 10.1016/j.watres.2018.07.031
Scopus记录号: 2-s2.0-85052048779
论文题名: In situ measurement of perfluoroalkyl substances in aquatic systems using diffusive gradients in thin-films technique
作者: Guan D.-X. ; Li Y.-Q. ; Yu N.-Y. ; Yu G.-H. ; Wei S. ; Zhang H. ; Davison W. ; Cui X.-Y. ; Ma L.Q. ; Luo J.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 144 起始页码: 162
结束页码: 171
语种: 英语
英文关键词: Diffusion coefficients
; Diffusive gradients in thin-films
; Passive sampling
; Perfluoroalkyl substances
; Surface waters
; Wastewaters
Scopus关键词: Diffusion
; Diffusion in solids
; Effluent treatment
; Effluents
; Extraction
; Phase separation
; Surface waters
; Wastewater
; Wastewater treatment
; Analyte concentration
; Diffusive gradients in thin films
; Municipal wastewater treatment plants
; Passive sampling
; Perfluoroalkyl substances
; Perfluorooctane sulfonates
; Perfluorooctanoic acid
; Solid phase extraction method
; Thin films
; aquatic environment
; diffusion
; effluent
; environmental impact
; extraction method
; film
; fluorocarbon
; in situ measurement
; sampling
; surface water
; wastewater
; wastewater treatment
英文摘要: To better understand the environmental impact of ubiquitous perfluoroalkyl substances (PFASs) in waters, reliable and robust measurement techniques are needed. As one of the most widely used passive sampling approaches, diffusive gradients in thin-films (DGT) is not only easy to handle but also provides time-weighted analyte concentrations. Based on DGT with XAD18 as a binding agent, we developed a new methodology to measure two frequently detected PFASs in surface waters and wastewaters, i.e. perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS). Their diffusion coefficients in the diffusive gel, measured using an independent diffusion cell, were 4.37 × 10−6 and 5.08 × 10−6 cm2 s−1 at 25 °C, respectively. DGT had a high capacity for PFOA and PFOS at 196 and 246 μg per gel disk, suggesting the DGT sampler was suitable for deployment of several weeks. Time-integrated concentrations of PFOA and PFOS in a natural lake and river, and a municipal wastewater treatment plant effluent using DGT samplers deployed in situ for 12–33 d were comparable to those measured by a solid-phase extraction method coupled with high-frequency grab sampling. This study demonstrates that DGT is an effective tool for in situ monitoring of PFASs in natural waters and wastewaters. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112488
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China; National Engineering Research Center for Organic-based Fertilizers, Jiangsu Collaborative Innovation Center for Solid Organic Waste Utilization, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China; Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, United Kingdom; Soil and Water Science Department, University of Florida, Gainesville, FL 32611, United States
Recommended Citation:
Guan D.-X.,Li Y.-Q.,Yu N.-Y.,et al. In situ measurement of perfluoroalkyl substances in aquatic systems using diffusive gradients in thin-films technique[J]. Water Research,2018-01-01,144