Temporal trends of per-and polyfluoroalkyl substances(PFAS)in the influent of two of the largest wastewater treatment plants in Australia  

作　　者：Hue T.Nguyen Sarit L.Kaserzon Phong K.Thai Soumini Vijayasarathy Jennifer Bräunig Nicholas D.Crosbie Anders Bignert Jochen F.Mueller 

机构地区：[1]Queensland Alliance for Environmental Health Sciences(QAEHS),The University of Queensland,Brisbane,QLD,4102,Australia [2]Melbourne Water Corporation,Docklands,VIC,3001,Australia [3]Swedish Museum of Natural History,Box 50007,10405,Stockholm,Sweden [4]Faculty of Environment,University of Science,Vietnam National University,Ho Chi Minh City,Viet nam

出　　处：《Emerging Contaminants》2019年第1期211-218,共8页新兴污染物（英文）

基　　金：The authors would like to thank Sharon Grant,Jake O'Brien,Ben Tscharke and Rachel Mackie for organizing sample collection and providing data.Hue T.Nguyen is also grateful to Christine M.Baduel for LC/MS-MS analytical training.Hue T.Nguyen is supported by an Australian Award Scholarship granted by Australian Department of Foreign Affairs and Trade.Jochen F.Mueller is funded by a UQ Fellowship.

摘　　要：Per-and polyfluoroalkyl substances(PFAS)are found ubiquitously in wastewater treatment plants(WWTPs)due to their multiple sources in industry and consumer products.In Australia,limited spatial data are available on PFAS levels inWWTPs influent,while no temporal data have been reported.The aim of this study was to investigate the occurrence and temporal trend of PFAS in the influent of two large WWTPs in Australia(WWTP A and B)over a four-year period.Daily influent samples were collected over one week at different seasons from 2014 to 2017.Eleven perfluoroalkyl acids(PFAA)(i.e.seven perfluoroalkyl carboxylic acids(PFCAs)and four perfluoroalkyl sulfonic acids(PFSA))were detected with mean S11PFAA concentrations of 57±3.3e94±17 ng/L at WWTP A,and 31±6.1e142±73 ng/L at WWTP B.The highest mean concentrations were observed for perfluorohexanoate(PFHxA)(20±2 ng/L)in WWTP A,and perfluorooctane sulfonate(PFOS)(17±13 ng/L)in WWTP B.The precursor 6:2 fluorotelomer sulfonate was detected over five sampling periods from Aug 2016 to Oct 2017,with mean concentrations of 37±18e138±51 ng/L for WWTP A and 8.8±4.5e29±5.1 ng/L for WWTP B.Higher concentration of 6:2 FTS(1.8e11 folds)than those of PFOA and PFOS in WWTP A indicate a likely substitution of C8 PFAA by fluorotelomer-based PFAS in this catchment.Temporal trends(annual and seasonal)in per-capita mass load were observed for some PFAA,increasing for PFPeA,PFHxA,PFHpA,PFNA,and PFHxS,while decreasing for PFBS and PFOS in either WWTPs.Notably,elevated levels of PFOS in October 2017 were observed at both WWTPs with the highest per capita mass load of up to 67 mg/day/inhabitant.For some PFAS release trends,longer sampling periods would be required to achieve acceptable statistical power.

关 键 词：Per-and polyfluoroalkyl substances(PFAS) 6:2 fluorotelomer sulfonate(6:2 FTS) Temporal trends Wastewater treatment plant(WWTP) INFLUENT Power Effect size 

分 类 号：X70[环境科学与工程—环境工程]