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Li Y, Key TA, Vo PHN, Porman S, Thapalia A, McDonough JT, Fiorenza S, Barnes CM, Mueller JF, Thai PK. Distribution and release of PFAS from AFFF-impacted asphalt: How does it compare to concrete? JOURNAL OF HAZARDOUS MATERIALS 2024; 466:133627. [PMID: 38301440 DOI: 10.1016/j.jhazmat.2024.133627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 01/18/2024] [Accepted: 01/24/2024] [Indexed: 02/03/2024]
Abstract
Aqueous film forming foam (AFFF)-impacted asphalt and concrete may serve as potential secondary sources of per- and polyfluoroalkyl substances (PFAS) to the environment through surficial leaching. We aimed to understand the vertical distribution and surficial release of PFAS from AFFF-impacted asphalt and concrete cores collected from various locations (∼10-70 m distance between samples). Among the PFAS analyzed, 6:2 FTS was observed as having the highest concentration in the surface layer (0 - 0.5 cm) of concrete (225 µg kg-1) and in the runoff from the concrete (2600 ng L-1). PFOS was detected at the highest concentration in the surface layer (0 - 0.5 cm) of asphalt (47 µg kg-1) and associated runoff (780 ng L-1). The total mass of PFAS released during three rainfall simulations accounts for a fraction of the total mass in the surface layer (0 - 0.5 cm), ranging from 0.10 - 9.8% and 0.078 - 2.4% for asphalt and concrete cores, respectively. Asphalt exhibited a higher release rate than concrete, demonstrated by the higher total release coefficient of PFAS (4 - 16 m-2) compared to that of concrete cores (1 - 5 m-2). These results suggested that, similar to concrete, AFFF-impacted asphalt may be a secondary source of PFAS to the environment.
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Affiliation(s)
- Yijing Li
- Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, QLD 4102, Australia
| | - Trent A Key
- ExxonMobil Biomedical Sciences Inc., Spring, TX 77389, USA
| | - Phong H N Vo
- Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, QLD 4102, Australia; Climate Change Cluster, Faculty of Science, University of Technology Sydney, 15 Broadway, Ultimo, NSW 2007, Australia
| | - Scott Porman
- Mobil Oil Australia, Melbourne, VIC 3008, Australia
| | - Anita Thapalia
- ExxonMobil Environmental and Property Solutions Company, Spring, TX 77389, USA
| | | | | | - Craig M Barnes
- Airservices Australia, 25 Constitution Avenue, Canberra, ACT 2601, Australia
| | - Jochen F Mueller
- Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, QLD 4102, Australia
| | - Phong K Thai
- Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, QLD 4102, Australia.
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Boyer TH, Gernjak W. Research stories along the urban water cycle. WATER RESEARCH X 2024; 22:100218. [PMID: 38516567 PMCID: PMC10955406 DOI: 10.1016/j.wroa.2024.100218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 03/05/2024] [Accepted: 03/08/2024] [Indexed: 03/23/2024]
Affiliation(s)
- Treavor H. Boyer
- School of Sustainable Engineering and the Built Environment (SSEBE), Arizona State University, PO Box 873005, Tempe, AZ 85287-3005, USA
| | - Wolfgang Gernjak
- Catalan Institute for Water Research (ICRA), 17003 Girona, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), 08010 Barcelona, Spain
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