The passive sampling technique,diffusive gradients in thin films(DGT)has attracted in-creasing interests as an in-situ sampler for organic contaminants including per-and polyflu-oroalkyl substances(PFAS).However,its effectiveness has been questioned because of the small effective sampling area(3.1 cm2).In this study,we developed a DGT probe for rapid sampling of eight PFAS in waters and applied it to a water-sediment system.It has a much larger sampling area(27 cm2)and as a result lower method quantification limits(0.15-0.21 ng/L for one-day deployment and 0.02-0.03 ng/L for one-week deployment)and much higher(by＞10 factors)sampling rate(100 mL/day)compared to the standard DGT(piston configuration).The sampler could linearly accumulate PFAS from wastewater,was sensitive enough even for a 24 hr deployment with performance comparable to grab sampling(500 mL).The DGT probe provided homogeneous sampling performance along the large expo-sure area.The use of the probe to investigate distributions of dissolved PFAS around the sediment-water interface was demonstrated.This work,for the first time,demonstrated that the DGT probe is a promising monitoring tool for trace levels of PFAS and a research tool for studying their distribution,migration,and fate in aquatic environments including the sediment-water interface.

Yuanyuan Yang;Sisi Liu;Runmei Wang;Cailin Li;Jianhui Tang;Tao Chen;Guang-Guo Ying;Chang-Er Chen

Environmental Research Institute/School of Environment,Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety&MOE Key Laboratory of Theoretical Chemistry of Environment,South China Normal University,Guangzhou 510006,China;Key Laboratory of Coastal Environmental Processes and Ecological Remediation,Yantai Institute of Coastal Zone Research,Chinese Academy of Sciences,Yantai 264003,China

环境科学学报（英文版）

[1]Yuanyuan Yang;Sisi Liu;Runmei Wang;Cailin Li;Jianhui Tang;Tao Chen;Guang-Guo Ying;Chang-Er Chen-.Diffusive gradients in thin films(DGT)probe for effectively sampling of per-and polyfluoroalkyl substances in waters and sediments)[J].环境科学学报（英文版）,2022(11):90-97

polyflu,oroalkyl

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