Cited by 390Per- and polyfluoroalkyl substances researchEnvironmental Chemistry and AnalysisFluoride Effects and Removal

The Adsorption of Perfluorooctane Sulfonate onto Sand, Clay, and Iron Oxide Surfaces

Johnson, Ramona L., Anschutz, Amy J., Smolen, Jean M., Simcik, Matt F., Penn, R. Lee·2007·Journal of Chemical & Engineering Data

Abstract

Fluorinated anionic surfactants have drawn considerable attention due to recent work showing significant concentrations in surface waters and biota from around the globe. A detailed understanding of the transport and fate of fluorinated surfactants through soil and like media must include an elucidation of mineral surface chemistry. Five materials were equilibrated with solutions of perfluorooctane sulfonate (PFOS) to characterize adsorption: kaolinite, Ottawa sand standard, synthetic goethite, Lake Michigan sediment, and iron-coated sand from Mappsville, VA. Aqueous and adsorbed PFOS was quantified with LC/MS (mass balance average: 101 ± 12 %, n = 37). The materials showed a near linear increase in adsorption as the equilibrium concentrations increased. Isotherms and calculated solid/solution distribution ratio experiments indicated that PFOS adsorption is significant but smaller than hydrocarbon analogues or organic compounds of similar molecular weight. Surface area normalized adsorption increased for the materials in the following order: goethite < kaolinite < high iron sand < Ottawa sand standard. Experimental results and comparisons to published data suggest that organic carbon may play an important role in sorption whereas electrostatic attraction may play a role when organic carbon is not present.

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Crossref · 10.1021/je060285g

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Authors
Johnson, R. L., Anschutz, A. J., Smolen, J. M., Simcik, M. F., & Penn, R. L.
Affiliations
University of Minnesota (US)
Corresponding author
Simcik, Matt F.
Venue
Journal of Chemical & Engineering Data
Published
2007-05-08
Volume
52
Issue
4
Pages
1165-1170
ISSN
  • 0021-9568 (ISSN-L)
  • 1520-5134
OpenAlex
W2076617494
Cited by
389
References
33
Citations by year
2026: 22 · 2025: 35 · 2024: 25 · 2023: 27 · 2022: 29 · 2021: 32 · 2020: 34 · 2019: 29 · 2018: 20 · 2017: 19 · 2016: 18 · 2015: 15 · 2014: 15 · 2013: 10 · 2012: 13
FWCI
7.37
Type
journal article
Language
en
Open access
closed
Locations
Journal of Chemical & Engineering Data (publishedVersion)
Topics
  • Physical Sciences › Environmental Science › Environmental Chemistry › Per- and polyfluoroalkyl substances research
  • Physical Sciences › Environmental Science › Environmental Chemistry › Environmental Chemistry and Analysis
  • Physical Sciences › Environmental Science › Water Science and Technology › Fluoride Effects and Removal
Keywords
PFOS, mineral surface chemistry, kaolinite, goethite, iron oxide, Ottawa sand, iron-coated sand, adsorption isotherms, distribution ratio, organic carbon, electrostatic attraction, soil sorption

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