Understanding the atmospheric measurement and behavior of perfluorooctanoic acid
Abstract
The recently reported quantification of the atmospheric sampling artifact for perfluorooctanoic acid (PFOA) was applied to existing gas and particle concentration measurements. Specifically, gas phase concentrations were increased by a factor of 3.5 and particle-bound concentrations by a factor of 0.1. The correlation constants in two particle-gas partition coefficient (K(QA)) estimation equations were determined for multiple studies with and without correcting for the sampling artifact. Correction for the sampling artifact gave correlation constants with improved agreement to those reported for other neutral organic contaminants, thus supporting the application of the suggested correction factors for perfluorinated carboxylic acids. Applying the corrected correlation constant to a recent multimedia modeling study improved model agreement with corrected, reported, atmospheric concentrations. This work confirms that there is sufficient partitioning to the gas phase to support the long-range atmospheric transport of PFOA.
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PFASs can form on snow or ice surfaces through the breakdown of precursors like FTOH when exposed to sunlight, increasing iPFASs in soil after deposition.
“PFASs can also form on snow or ice surfaces through the breakdown of precursors like FTOH when exposed to sunlight. This photochemical degradation increases the levels of iPFASs in the soil after deposition [151,152].”
From Industrial Applications, Environmental Fate, Human Exposure, and Health Effects of PFAS (2025) · cites this paper as [151]
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“This photochemical degradation increases the levels of i-PFASs in the soil after deposition [151,152].”
Occurrence and distribution of perfluoroalkyl acids in rivers: Impact and risk assessment
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- Authors
- Webster, E. M., & Ellis, D. A.
- Affiliations
- Trent University (CA)
- Corresponding author
- Ellis, David A.
- ORCID
- Webster, Eva M.
- Venue
- Environmental Toxicology and Chemistry
- Publisher
- Oxford University Press (OUP)
- Published
- 2012-07-03
- Volume
- 31
- Issue
- 9
- Pages
- 2041-2046
- ISSN
- 0730-7268 (ISSN-L)
- 1552-8618
- OpenAlex
- W2083096911
- Cited by
- 7
- References
- 33
- Citations by year
- 2025: 1 · 2023: 1 · 2022: 1 · 2019: 2 · 2015: 1 · 2013: 1
- FWCI
- 0.51
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- Environmental Toxicology and Chemistry (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Environmental Science › Environmental Chemistry › Per- and polyfluoroalkyl substances research
- Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Toxic Organic Pollutants Impact
- Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Atmospheric chemistry and aerosols
- Keywords
- perfluorooctanoic acid, sampling artifacts, gas-phase concentration, perfluorinated carboxylic acids, long-range transport, multimedia modeling, atmospheric measurement
- MeSH terms
- Atmosphere, Caprylates, Environmental Pollutants, Fluorocarbons, Gases, Models, Theoretical, Artifacts
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