Forever but not everywhere?Unexpected non-detection of per-and polyfluoroalkyl substances(PFAS)in major Philippines rivers  

作　　者：Patrick Byrne Emma Biles Loucel Cui Richard Williams Decibel V.Faustino-Eslava Laura Quick Manilyn Casa Francis Ian P.Gonzalvo Maria Regina V.Regalado Kim Bryan N.Cabrera Kit Felian C.Tenio Jenielyn Padrones Juan Miguel Guotana Karen A.Hudson-Edwards Grigorios Vasilopoulos Thomas J.Coulthard Cecilia Tortajada Jessica D.Villanueva-Peyraube Janice B.Sevilla-Nastor Justine Perry T.Domingo David Megson 

机构地区：[1]School of Biological and Environmental Sciences,Liverpool John Moores University,Liverpool,UK [2]School of Environmental Science and Management,University of the Philippines Los Baños,Los Banos,Philippines [3]School of Geographical and Earth Sciences,University of Glasgow,Glasgow,UK [4]Institute of Renewable Natural Resources,University of the Philippines Los Baños,Los Baños,Philippines [5]Camborne School of Mines and Environment and Sustainability Institute,University of Exeter,Penryn,UK [6]Energy and Environment Institute,University of Hull,Hull,UK [7]School of Social and Environmental Sustainability,Dumfries Campus,University of Glasgow,Dumfries,UK [8]Ecology and Environmental Research Centre(EERC),Manchester Metropolitan University,Manchester,UK

出　　处：《River》2025年第1期29-35,共7页江河(英文)

基　　金：Natural Environment Research Council,Grant/Award Number:NE/W006871/1。

摘　　要：Recent studies suggest per-and polyfluoroalkyl substances(PFAS)are ubiquitous in rivers worldwide.In the Asia-Pacific region,the frequency of PFAS detection in rivers is increasing.However,the overwhelming majority of studies and data represent high population and urbanized river catchments.In this study,we investigate PFAS occurrence in major Philippines river systems characterized by both high and low population densities.In the Pasig Laguna de Bay River,which drains a major urban conurbation,we detected PFAS at concentrations typical of global rivers.Unexpectedly,we did not detect PFAS in river water or sediments in low population density river catchments,despite our instrument detection limits being lower than the vast majority of river concentrations reported worldwide.We hypothesize that septic tanks,as the dominant wastewater treatment practice in Philippines catchments,may control the release of PFAS into groundwater and rivers in the Philippines.However,no groundwater PFAS data currently exist to validate this supposition.More broadly,our findings highlight the need for more representative PFAS sampling and analysis in rivers to more accurately represent regional and global detection frequencies and trends.

关 键 词：chemical pollution detection limits PFAS Philippines population density wastewater treatment 

分 类 号：X70[环境科学与工程—环境工程]