The DOI matches its Crossref record; 9 of the 9 references it cites were found in a registry or an index.
Tools for Understanding and Predicting the Affinity of Per- and Polyfluoroalkyl Substances for Anion-Exchange Sorbents
Abstract
Anion-exchange (AE) sorbents are gaining in popularity for the remediation of anionic per- and polyfluoroalkyl substances (PFAS) in water. However, it is unclear how hydrophobic and electrostatic interactions contribute to anionic PFAS retention. The goal of this study was to understand the effects of PFAS chain length and head group on electrostatic interactions between PFAS and an aminopropyl AE phase. Liquid chromatography-mass spectrometry (LC-MS) was used with an aminopropyl AE guard column to find relative retention times. The average electrostatic potential (EP avg ) of each PFAS was calculated, which correlated positively with the PFAS chromatographic retention time, demonstrating the value of EP avg as a proxy for predicting electrostatic interactions between PFAS and the aminopropyl AE phase. The order of greatest to lowest PFAS AE affinity for an aminopropyl column based on chromatographic retention times and electrostatic interactions was n :3 fluorotelomer carboxylic acids ( n :3 FtAs) > n :2 fluorotelomer carboxylic acids ( n :2 FtAs) > perfluoroalkyl carboxylates (PFCAs) > perfluoroalkyl sulfonamides (FASAs) ∼ n :2 fluorotelomer sulfonates ( n :2 FtSs) > perfluoroalkyl sulfonates (PFSAs). This study introduces a methodology for qualitatively characterizing electrostatic interactions between PFAS and AE phases and highlights that electrostatic interactions alone cannot explain the affinity of PFAS for AE resins in water treatment/remediation scenarios.
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A comparison of retention/removal among a homologous series (e.g., PFCAs) is useful in elucidating relative retention mechanisms in anion exchange sorbents.
“We previously demonstrated that a comparison in retention/removal among a homologous series (e.g., PFCAs) is useful in elucidating relative retention mechanisms in anion exchange sorbents.46”
From Evaluation of sorbents and matrix effects for treating heavy metals and per- and polyfluoroalkyl substances as co-contaminants in stormwater (2023) · cites this paper as [46]
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Advancing PFAS Sorbent Design: Mechanisms, Challenges, and Perspectives
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Parker, B. A., Kanalos, C. A., Radniecki, T. S., Massey Simonich, S. L., & Field, J. A. (2023) · Environmental Science: Water Research & Technology · doi:10.1039/d3ew00028a · Cited by 14
Self-citation
Metadata
- Authors
- Parker, B. A., Knappe, D. R. U., Titaley, I. A., Wanzek, T. A., & Field, J. A.
- Affiliations
- Oregon State University (US)
- North Carolina State University (US)
- Corresponding author
- Field, Jennifer A.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2022-10-20
- Volume
- 56
- Issue
- 22
- Pages
- 15470-15477
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W4306940018
- Cited by
- 32
- References
- 9
- Citations by year
- 2026: 7 · 2025: 7 · 2024: 11 · 2023: 7
- FWCI
- 2.21
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- Environmental Science & Technology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- U.S. Department of Defense (ER18-C3-1230)
- Topics
- Physical Sciences › Environmental Science › Environmental Chemistry › Per- and polyfluoroalkyl substances research
- Physical Sciences › Environmental Science › Water Science and Technology › Fluoride Effects and Removal
- Physical Sciences › Environmental Science › Environmental Engineering › Environmental remediation with nanomaterials
- Keywords
- per- and polyfluoroalkyl substances, electrostatic interactions, hydrophobic interactions, retention prediction, electrostatic potential, fluorotelomer carboxylic acids, fluorotelomer sulfonates, perfluoroalkyl carboxylates, perfluoroalkyl sulfonates, PFAS remediation, water treatment
- MeSH terms
- Anions, Carboxylic Acids, Fluorocarbons, Water Pollutants, Chemical, Water Purification
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