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Madronich S, Bernhard GH, Neale PJ, Heikkilä A, Andersen MPS, Andrady AL, Aucamp PJ, Bais AF, Banaszak AT, Barnes PJ, Bornman JF, Bruckman LS, Busquets R, Chiodo G, Häder DP, Hanson ML, Hylander S, Jansen MAK, Lingham G, Lucas RM, Calderon RM, Olsen C, Ossola R, Pandey KK, Petropavlovskikh I, Revell LE, Rhodes LE, Robinson SA, Robson TM, Rose KC, Schikowski T, Solomon KR, Sulzberger B, Wallington TJ, Wang QW, Wängberg SÅ, White CC, Wilson SR, Zhu L, Neale RE. Continuing benefits of the Montreal Protocol and protection of the stratospheric ozone layer for human health and the environment. Photochem Photobiol Sci 2024; 23:1087-1115. [PMID: 38763938 DOI: 10.1007/s43630-024-00577-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Accepted: 04/09/2024] [Indexed: 05/21/2024]
Abstract
The protection of Earth's stratospheric ozone (O3) is an ongoing process under the auspices of the universally ratified Montreal Protocol and its Amendments and adjustments. A critical part of this process is the assessment of the environmental issues related to changes in O3. The United Nations Environment Programme's Environmental Effects Assessment Panel provides annual scientific evaluations of some of the key issues arising in the recent collective knowledge base. This current update includes a comprehensive assessment of the incidence rates of skin cancer, cataract and other skin and eye diseases observed worldwide; the effects of UV radiation on tropospheric oxidants, and air and water quality; trends in breakdown products of fluorinated chemicals and recent information of their toxicity; and recent technological innovations of building materials for greater resistance to UV radiation. These issues span a wide range of topics, including both harmful and beneficial effects of exposure to UV radiation, and complex interactions with climate change. While the Montreal Protocol has succeeded in preventing large reductions in stratospheric O3, future changes may occur due to a number of natural and anthropogenic factors. Thus, frequent assessments of potential environmental impacts are essential to ensure that policies remain based on the best available scientific knowledge.
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Affiliation(s)
- S Madronich
- National Center for Atmospheric Research, Boulder, CO, USA.
- Natural Resource Ecology Laboratory, USDA UV-B Monitoring and Research Program, Colorado State University, Fort Collins, CO, USA.
| | - G H Bernhard
- Biospherical Instruments Inc, San Diego, CA, USA
| | - P J Neale
- Smithsonian Environmental Research Center, Edgewater, MD, USA
| | - A Heikkilä
- Finnish Meteorological Institute, Helsinki, Finland
| | - M P Sulbæk Andersen
- Department of Chemistry and Biochemistry, California State University Northridge, Northridge, CA, USA
- Department of Chemistry, University of Copenhagen, Copenhagen, Denmark
| | - A L Andrady
- Department of Chemical and Biomolecular Engineering, North Carolina State University , Raleigh, NC, USA
| | - P J Aucamp
- Ptersa Environmental Consultants, Faerie Glen, South Africa
| | - A F Bais
- Laboratory of Atmospheric Physics, Department of Physics, Aristotle University, Thessaloniki, Greece
| | - A T Banaszak
- Unidad Académica de Sistemas Arrecifales, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Puerto Morelos, Mexico
| | - P J Barnes
- Department of Biological Sciences and Environment Program, Loyola University New Orleans, New Orleans, LA, USA
| | - J F Bornman
- Food Futures Institute, Murdoch University, Perth, Australia
| | - L S Bruckman
- Department of Materials Science and Engineering, Reserve University, Cleveland, OH, USA
| | - R Busquets
- Chemical and Pharmaceutical Sciences, Kingston University London, Kingston Upon Thames, UK
| | - G Chiodo
- Institute for Atmospheric and Climate Science, ETH Zürich, Zurich, Switzerland
| | - D-P Häder
- Friedrich-Alexander University, Möhrendorf, Germany
| | - M L Hanson
- Department of Environment and Geography, University of Manitoba, Winnipeg, MB, Canada
| | - S Hylander
- Centre for Ecology and Evolution in Microbial Model Systems, Linnaeus University, Kalmar, Sweden
| | - M A K Jansen
- School of Biological, Earth and Environmental Sciences, University College, Cork, Ireland
| | - G Lingham
- Centre For Ophthalmology and Visual Science (Incorporating Lion's Eye Institute), University of Western Australia, Perth, Australia
- Centre for Eye Research Ireland, Environmental, Sustainability and Health Institute, Technological University Dublin, Dublin, Ireland
| | - R M Lucas
- National Centre for Epidemiology and Population Health, College of Health and Medicine, Australian National University, Canberra, Australia
| | - R Mackenzie Calderon
- Cape Horn International Center, Puerto Williams, Chile
- Millennium Institute Biodiversity of Antarctic and Subantarctic Ecosystems BASE, Santiago, Chile
- Centro Universitario Cabo de Hornos, Universidad de Magallanes, O'Higgins 310, Puerto Williams, Chile
| | - C Olsen
- Population Health Program, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - R Ossola
- Department of Chemistry, Colorado State University, Fort Collins, CO, USA
| | - K K Pandey
- Indian Academy of Wood Science, Bengaluru, India
| | - I Petropavlovskikh
- Cooperative Institute for Research in Environmental Sciences, University of Colorado , Boulder, CO, USA
- NOAA Global Monitoring Laboratory, Boulder, CO, USA
| | - L E Revell
- School of Physical and Chemical Sciences, University of Canterbury, Christchurch, New Zealand
| | - L E Rhodes
- Faculty of Biology Medicine and Health, School of Biological Sciences, The University of Manchester, Manchester, UK
- Dermatology Centre, Salford Royal Hospital, Greater Manchester, UK
| | - S A Robinson
- Securing Antarctica's Environmental Future, University of Wollongong, Wollongong, Australia
- School of Earth, Atmospheric and Life Sciences, University of Wollongong, Wollongong, Australia
| | - T M Robson
- UK National School of Forestry, University of Cumbria, Ambleside Campus, UK
- Viikki Plant Science Centre, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - K C Rose
- Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - T Schikowski
- IUF-Leibniz Research Institute for Environmental Medicine, Dusseldorf, Germany
| | - K R Solomon
- School of Environmental Sciences, University of Guelph, Guelph, Canada
| | - B Sulzberger
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Duebendorf, Switzerland
| | - T J Wallington
- Center for Sustainable Systems, School for Environment and Sustainability, University of Michigan, Ann Arbor, MI, USA
| | - Q-W Wang
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
| | - S-Å Wängberg
- Department of Marine Sciences, University of Gothenburg, Gothenburg, Sweden
| | | | - S R Wilson
- School of Earth, Atmospheric and Life Sciences, University of Wollongong, Wollongong, Australia
| | - L Zhu
- State Key Lab for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, China
| | - R E Neale
- Population Health Program, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia.
- School of Public Health, University of Queensland, Brisbane, Australia.
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2
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Petali JM, Pulster EL, McCarthy C, Pickard HM, Sunderland EM, Bangma J, Carignan CC, Robuck A, Crawford KA, Romano ME, Lohmann R, von Stackelburg K. Considerations and challenges in support of science and communication of fish consumption advisories for per- and polyfluoroalkyl substances. INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT 2024. [PMID: 38752651 DOI: 10.1002/ieam.4947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 04/18/2024] [Accepted: 04/23/2024] [Indexed: 06/12/2024]
Abstract
Federal, state, tribal, or local entities in the United States issue fish consumption advisories (FCAs) as guidance for safer consumption of locally caught fish containing contaminants. Fish consumption advisories have been developed for commonly detected compounds such as mercury and polychlorinated biphenyls. The existing national guidance does not specifically address the unique challenges associated with bioaccumulation and consumption risk related to per- and polyfluoroalkyl substances (PFAS). As a result, several states have derived their own PFAS-related consumption guidelines, many of which focus on one frequently detected PFAS, known as perfluorooctane sulfonic acid (PFOS). However, there can be significant variation between tissue concentrations or trigger concentrations (TCs) of PFOS that support the individual state-issued FCAs. This variation in TCs can create challenges for risk assessors and risk communicators in their efforts to protect public health. The objective of this article is to review existing challenges, knowledge gaps, and needs related to issuing PFAS-related FCAs and to provide key considerations for the development of protective fish consumption guidance. The current state of the science and variability in FCA derivation, considerations for sampling and analytical methodologies, risk management, risk communication, and policy challenges are discussed. How to best address PFAS mixtures in the development of FCAs, in risk assessment, and establishment of effect thresholds remains a major challenge, as well as a source of uncertainty and scrutiny. This includes developments better elucidating toxicity factors, exposures to PFAS mixtures, community fish consumption behaviors, and evolving technology and analytical instrumentation, methods, and the associated detection limits. Given the evolving science and public interests informing PFAS-related FCAs, continued review and revision of FCA approaches and best practices are vital. Nonetheless, consistent, widely applicable, PFAS-specific approaches informing methods, critical concentration thresholds, and priority compounds may assist practitioners in PFAS-related FCA development and possibly reduce variability between states and jurisdictions. Integr Environ Assess Manag 2024;00:1-20. © 2024 SETAC.
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Affiliation(s)
- Jonathan Michael Petali
- Environmental Health Program, New Hampshire Department of Environmental Services, Concord, New Hampshire, USA
| | - Erin L Pulster
- US Geological Survey, Columbia Environmental Research Center, Columbia, Missouri, USA
| | | | - Heidi M Pickard
- Harvard John A. Paulson School of Engineering and Applied Sciences, Cambridge, Massachusetts, USA
| | - Elsie M Sunderland
- Harvard John A. Paulson School of Engineering and Applied Sciences, Cambridge, Massachusetts, USA
- Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Jacqueline Bangma
- Oak Ridge Institute for Science and Education, Oak Ridge, Tennessee, USA
- Center for Environmental Measurement and Modeling, US Environmental Protection Agency, Research Triangle Park, North Carolina, USA
| | - Courtney C Carignan
- Department Food Science and Human Nutrition, Department of Pharmacology and Toxicology Michigan State University, East Lansing, Michigan, USA
| | - Anna Robuck
- Environmental Effects Research Laboratory, US Environmental Protection Agency, Narragansett, Rhode Island, USA
| | - Kathryn A Crawford
- Environmental Studies Programs, Middlebury College, Middlebury, Vermont, USA
| | - Megan E Romano
- Department of Epidemiology, The Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire, USA
| | - Rainer Lohmann
- Graduate School of Oceanography, University of Rhode Island, Narragansett, Rhode Island, USA
| | - Katherine von Stackelburg
- Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, Massachusetts, USA
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Baqar M, Saleem R, Zhao M, Zhao L, Cheng Z, Chen H, Yao Y, Sun H. Combustion of high-calorific industrial waste in conventional brick kilns: An emerging source of PFAS emissions to agricultural soils. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 906:167612. [PMID: 37804982 DOI: 10.1016/j.scitotenv.2023.167612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 10/03/2023] [Accepted: 10/04/2023] [Indexed: 10/09/2023]
Abstract
The brick kilns in the South Asian region are widely documented to partially combust high-calorific waste components of synthetic-industrial origin, which contain hazardous constituents, including per- and polyfluoroalkyl substances (PFAS). Correspondingly, these establishments are necessarily built on agricultural land to easily acquire clay by excavating soil horizons, thus making cultivation soils vulnerable to PFAS contaminations. In this pioneering study, the occurrence, distribution profile, traceability and human health risk exposure to forty-four legacy and novel PFAS homologues, including two ultrashort-chain (C2-C3) PFAS, were investigated in agricultural soils around thirty-two conventional brick kilns across three districts of Pakistan. ⅀44PFAS concentrations ranged from 14.3 to 465 ng/g (median: 28.2 ng/g), which were 2 to 70 folds higher than those in background soils, and slightly higher than those reported in agricultural soils in the global literature. The highest occurrence was observed for PFAS alternatives, i.e., 6:2 fluorotelomer sulfonate (6:2 FTSA) (40 %) and 6:2 chlorinated polyfluorinated ether sulfonate (6:2 Cl-PFESA) (4.5 %). A significant positive correlation (p < 0.01) was observed among the concentrations of short-chain perfluoroalkyl acids (C4-C7) and novel PFOS substitutes, implying their origin from common sources. Furthermore, ultrashort-chain and short-chain perfluorocarboxylic acids (PFCA) (89 %) and perfluorosulfonic acids (PFSA) (63 %) dominated over long-chain's PFCA (11 %) and PFSA (37 %), respectively. The estimated daily intake to children exposed in surrounding inhabited communities, at 95th percentile concentrations was found to be approaching the European tolerable daily intake limit of 0.63 ng/kg bw/day. Therefore, the brick manufacturing industry is identified as a novel source of PFAS in the adjacent environment and for residents. This suggests the need for further investigations to elucidate the origin of emerging contaminants in the waste streams of the region to safeguard ecological integrity.
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Affiliation(s)
- Mujtaba Baqar
- MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Sustainable Development Study Centre, Government College University, Lahore 54000, Pakistan
| | - Rimsha Saleem
- Sustainable Development Study Centre, Government College University, Lahore 54000, Pakistan
| | - Maosen Zhao
- MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Leicheng Zhao
- MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Zhipeng Cheng
- MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Hao Chen
- MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Yiming Yao
- MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
| | - Hongwen Sun
- MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
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Shu Y, Wang Q, Hong P, Ruan Y, Lin H, Xu J, Zhang H, Deng S, Wu H, Chen L, Leung KMY. Legacy and Emerging Per- and Polyfluoroalkyl Substances Surveillance in Bufo gargarizans from Inlet Watersheds of Chaohu Lake, China: Tissue Distribution and Bioaccumulation Potential. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:13148-13160. [PMID: 37565447 DOI: 10.1021/acs.est.3c02660] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
Amphibians are sensitive biomonitors of environmental pollutants but reports regarding per- and polyfluoroalkyl substances (PFAS), a class of synthetic organofluorine substances, are limited. In this study, samples of water and Chinese toads (Bufo gargarizans) were collected in Chaohu Lake, China. Tissue-specific bioaccumulation characteristics of 39 PFAS, including 19 perfluoroalkyl acids (PFAAs), 8 emerging PFAS, and 12 PFAA precursors, were investigated, and the levels of some biochemical indicators were determined. The highest PFAS concentrations were found in the liver [215.97 ng/g dry weight (dw)] of Chinese toads, followed by gonads (135.42 ng/g dw) and intestine (114.08 ng/g dw). A similar tissue distribution profile was found between legacy and emerging PFAS in the toads, and the occurrence of two emerging PFAS, 2,3,3,3-tetrafluoro-2-propanoate (HFPO-DA) and 6:2 hydrogen-substituted polyfluorooctane ether sulfonate (6:2 H-PFESA) in the amphibians were for the first time reported. Field-based bioaccumulation factors of HFPO-DA were higher than perfluorooctanoic acid, indicating the higher bioaccumulation potential of this emerging PFAS than the legacy C8 compound. Males had significantly higher gonad PFAS levels than females while estradiol levels in gonads increased with increasing concentrations of certain PFAS (e.g., 6:2 H-PFESA), implying that PFAS may trigger estrogenic effects in the toads, especially for male toads.
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Affiliation(s)
- Yilin Shu
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, Provincial Key Laboratory of Biotic Environment and Ecological Safety in Anhui, School of Ecology and Environment, Anhui Normal University, Wuhu 241002, China
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Qi Wang
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong 999077, China
| | - Pei Hong
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, Provincial Key Laboratory of Biotic Environment and Ecological Safety in Anhui, School of Ecology and Environment, Anhui Normal University, Wuhu 241002, China
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong 999077, China
| | - Yuefei Ruan
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong 999077, China
| | - Huiju Lin
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong 999077, China
| | - Jing Xu
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong 999077, China
| | - Huijuan Zhang
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, Provincial Key Laboratory of Biotic Environment and Ecological Safety in Anhui, School of Ecology and Environment, Anhui Normal University, Wuhu 241002, China
| | - Shuaitao Deng
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, Provincial Key Laboratory of Biotic Environment and Ecological Safety in Anhui, School of Ecology and Environment, Anhui Normal University, Wuhu 241002, China
- Shanghai Wildlife and Protected Natural Areas Research Center, Shanghai 200336, China
| | - Hailong Wu
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, Provincial Key Laboratory of Biotic Environment and Ecological Safety in Anhui, School of Ecology and Environment, Anhui Normal University, Wuhu 241002, China
| | - Lianguo Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Kenneth Mei Yee Leung
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong 999077, China
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Rupp J, Guckert M, Berger U, Drost W, Mader A, Nödler K, Nürenberg G, Schulze J, Söhlmann R, Reemtsma T. Comprehensive target analysis and TOP assay of per- and polyfluoroalkyl substances (PFAS) in wild boar livers indicate contamination hot-spots in the environment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 871:162028. [PMID: 36740073 DOI: 10.1016/j.scitotenv.2023.162028] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 01/30/2023] [Accepted: 01/31/2023] [Indexed: 06/18/2023]
Abstract
The suitability of wild boar liver as a bioindicator of per- and polyfluoroalkyl substances (PFAS) in the terrestrial environment was investigated. Samples from 50 animals in three different areas associated with (1) contaminated paper sludges distributed on arable land (PS), (2) industrial emissions of PFAS (IE) and (3) background contamination (BC) were analyzed for 66 PFAS, including legacy PFAS, novel substitutes and precursors of perfluoroalkyl acids (PFAAs). Additionally, the Total Oxidizable Precursor (TOP) assay was performed to determine the formation potential of PFAAs from precursors. In total, 31 PFAS were detected with site-specific contamination profiles. PFAS concentrations in livers from area PS and IE (567 and 944 μg kg-1 wet weight, respectively) were multiple times higher than from area BC (120 μg kg-1). The dominating PFAS were the legacy compounds perfluorooctane sulfonic acid (PFOS) in areas PS and BC (426 and 82 μg kg-1, respectively) and perfluorooctanoic acid (PFOA) in area IE (650 μg kg-1). In area IE, the compounds 4,8-dioxa-3H-perfluorononanoic acid (DONA) and hexafluoropropylene oxide dimer acid (HFPO-DA) - which are used as substitutes for PFOA - were determined at 15 and 0.29 μg kg-1, respectively. The formation potential of PFAAs was highest in area PS, but generally lower than the contamination with PFAAs. The pattern of perfluoroalkyl carboxylic acids (PFCAs) in wild boar liver reflects the contamination of the local soil at the two hot-spot areas IE and PS. This first comparison of PFAS contamination between wild boars and soil suggests that wild boar livers are suitable bioindicators for PFAS contamination in the terrestrial environment. Moreover, in terrestrial samples from area IE, legacy PFAS were found to be retained for a longer period as compared to riverine samples (suspended particulate matter and chub filet).
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Affiliation(s)
- Jana Rupp
- Helmholtz Centre for Environmental Research - UFZ, Department of Analytical Chemistry, Permoserstrasse 15, 04318 Leipzig, Germany.
| | - Marc Guckert
- TZW: DVGW Water Technology Center, Karlsruher Str. 84, 76139 Karlsruhe, Germany
| | - Urs Berger
- Helmholtz Centre for Environmental Research - UFZ, Department of Analytical Chemistry, Permoserstrasse 15, 04318 Leipzig, Germany
| | - Wiebke Drost
- German Environment Agency (Umweltbundesamt), Wörlitzer Platz 1, 06813 Dessau-Rosslau, Germany
| | - Anneluise Mader
- Department Safety in the Food Chain, German Federal Institute for Risk Assessment, Max-Dohrn-Str. 8-10, 10589 Berlin, Germany
| | - Karsten Nödler
- TZW: DVGW Water Technology Center, Karlsruher Str. 84, 76139 Karlsruhe, Germany.
| | - Gudrun Nürenberg
- TZW: DVGW Water Technology Center, Karlsruher Str. 84, 76139 Karlsruhe, Germany
| | - Jona Schulze
- German Environment Agency (Umweltbundesamt), Wörlitzer Platz 1, 06813 Dessau-Rosslau, Germany
| | - Reiner Söhlmann
- District Office Rastatt, Office for Environment and Commercial Operator Inspection, Am Schlossplatz 5, 76437 Rastatt, Germany
| | - Thorsten Reemtsma
- Helmholtz Centre for Environmental Research - UFZ, Department of Analytical Chemistry, Permoserstrasse 15, 04318 Leipzig, Germany; Institute of Analytical Chemistry, University of Leipzig, Linnéstrasse 3, 04301 Leipzig, Germany.
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6
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Cahill TM. Increases in Trifluoroacetate Concentrations in Surface Waters over Two Decades. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:9428-9434. [PMID: 35736541 PMCID: PMC9261931 DOI: 10.1021/acs.est.2c01826] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 05/18/2022] [Accepted: 06/08/2022] [Indexed: 06/01/2023]
Abstract
Trifluoroacetate (TFA) is a persistent perfluorinated alkanoic acid anion that has many anthropogenic sources, with fluorocarbon refrigerants being a major one. After an initial burst of research in the late 1990s and early 2000s, research on this ubiquitous pollutant declined as atmospheric emissions of the precursor compounds grew rapidly. Thus, there is little contemporaneous information about the concentrations of TFA in the environment and how they have changed over time. This research determined the change in TFA concentrations in streams by resampling a transect that was originally sampled in 1998. The transect was designed to determine the regional distribution of TFA both upwind and downwind of major metropolitan areas in Northern California as well as a set of globally remote sites in Alaska. The results showed that TFA concentrations increased by an average of 6-fold over the intervening 23 years, which resulted in a median concentration of 180 ng/L (range 21.3-2790). The highest concentrations were found in streams immediately downwind of the San Francisco Bay Area, while substantially lower concentrations were found in the upwind, regionally remote, and globally remote sites. The C3 to C5 perfluorinated alkanoic acids were also investigated, but they were rarely detected with this methodology.
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