Cited by 93Per- and polyfluoroalkyl substances researchFluorine in Organic ChemistryToxic Organic Pollutants Impact

Perfluoroalkyl Acids in Great Lakes Precipitation and Surface Water (2006–2018) Indicate Response to Phase-outs, Regulatory Action, and Variability in Fate and Transport Processes

Gewurtz, Sarah B., Bradley, Lisa E., Backus, Sean, Dove, Alice, McGoldrick, Daryl, Hung, Hayley, Dryfhout-Clark, Helena·2019·Environmental Science & Technology

Abstract

The concentrations of perfluoroalkyl acids (PFAAs) were determined in precipitation from three locations across the Great Lakes between 2006 and 2018 and compared to those in surface water. Perfluorooctane sulfonate (PFOS) and perfluorooctanoate (PFOA) concentrations generally decreased in precipitation, likely in response to phase-outs/regulatory actions. In comparison, concentrations of shorter-chained PFAA, which are not regulated in Canada did not decrease and those of perfluorohexanoate and perfluorobutanoate (PFBA) recently increased, which could be due to their use as replacements, as the longer-chained PFAAs are being phased-out by industry. PFOS and PFOA concentrations were greater in Lake Ontario precipitation than in precipitation from more remote locations. In comparison, PFBA concentrations were comparable across locations, suggesting greater atmospheric transport either through its more volatile precursors and/or directly in association with particles/aerosols. In Lake Ontario, the comparison of PFAAs in precipitation to those in surface water provides evidence of sources (e.g., street dust and wastewater effluent) in addition to wet deposition to surface water, whereas wet deposition appears to be dominant in Lakes Huron and Superior. Our results suggest that source control of shorter-chained PFAAs may be slow to be reflected in environmental concentrations due to emissions far from the location of detection and continued volatilization from existing in-use products and waste streams.

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Crossref · 10.1021/acs.est.9b01337

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  • Wet deposition is a major pathway for PFASs to enter the soil, observed globally including in North America and Asia.

    “This process has been observed globally, including in North America and Asia, making wet deposition a major pathway for PFASs to enter the soil [149,150].”
  • Apart from well-known industrial uses such as fire-fighting foams and metal-plating mist suppressants, PFAS sources particularly relevant to outdoor urban environments include construction materials such as paints and coatings, roofing materials, outdoor textiles, solar panels, and synthetic turf; paper-based litter; and automotive parts and fluids.

    “Apart from well-known industrial uses such as re-ghting foams and metal-plating mist suppressants, PFAS sources particularly relevant to outdoor urban environments include construction materials such as paints and coatings, roong materials, outdoor textiles, solar panels, and synthetic turf; paper-based litter; and automotive parts and uids.[94][95][96]”

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Authors
Gewurtz, S. B., Bradley, L. E., Backus, S., Dove, A., McGoldrick, D., Hung, H., & Dryfhout-Clark, H.
Affiliations
Environment and Climate Change Canada (CA)
Corresponding author
Bradley, Lisa E.
Venue
Environmental Science & Technology
Published
2019-06-24
Volume
53
Issue
15
Pages
8543-8552
ISSN
  • 0013-936X (ISSN-L)
  • 1520-5851
OpenAlex
W2953755667
Cited by
92
References
54
Citations by year
2026: 16 · 2025: 15 · 2024: 15 · 2023: 10 · 2022: 11 · 2021: 15 · 2020: 8 · 2019: 2
FWCI
3.91
Type
journal article
Language
en
Open access
closed
Locations
  • Environmental Science & Technology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Environmental Science › Environmental Chemistry › Per- and polyfluoroalkyl substances research
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmaceutical Science › Fluorine in Organic Chemistry
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Toxic Organic Pollutants Impact
Keywords
perfluoroalkyl acids, PFOS, perfluorooctanoic acid, perfluorobutanoic acid, Great Lakes, precipitation, surface water, wet deposition, atmospheric transport, regulatory action, source control, Lake Ontario, Lake Huron, Lake Superior, road dust, wastewater effluent, volatilization, aerosols
MeSH terms
Environmental Monitoring, Fluorocarbons, Ontario, Water, Water Pollutants, Chemical, Alkanesulfonic Acids, Lakes

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