Sorption behaviour of per- and polyfluoroalkyl substances (PFASs) as affected by the properties of coastal estuarine sediments
Abstract
The sorption of three perfluoroalkyl substances (PFASs), namely perfluorooctane sulfonic acid (PFOS), perfluorooctanoic acid (PFOA) and perfluorohexane sulfonic acid (PFHxS), was determined in 19 coastal sediments. There are currently limited data on the sorption behaviour of these chemicals in marine or estuarine sediments and the properties controlling their sorption have not been well established. The median average PFOS K d value (30.4 L/kg) was >8 times that for PFOA (3.3 L/kg) and PFHxS (2.8 L/kg). Highly significant (P < .001) linear relationships were found between values for sorption coefficients (K d) for all three chemicals (PFOS, PFOA and PFHxS) to the estuarine sediments and organic carbon (OC) content with r 2 values ranging from 0.87 to 0.91. The nature of the constituents of OC was determined by nuclear magnetic resonance (NMR) for a subset (10) of the sediments to assess whether the strong relationship between sorption and OC was due solely to an increasing amount of OC or to particular OC fractions. The NMR analysis could not provide strong evidence for one OC fraction type explaining the variation in sorption of the three PFASs. Further investigation using partial least squares of the whole spectra also did not show any particular OC components could explain the K d variation. This data suggests that variation in sorption in these sediments was primarily due to the varying OC content and not its chemistry.
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Sorption Kd values for mid-chained PFHxS, PFOA and PFOS in this study were comparable to previously reported values and were higher than corresponding short-chain PFASs.
“The sorption K d values for the mid-chained PFHxS, PFOA and PFOS in this study were comparable to previously reported values (Higgins and Luthy, 2006;Oliver et al., 2020) and were higher than the corresponding short-chain PFASs”
From Modelling the sorption behaviour of perfluoroalkyl carboxylates and perfluoroalkane sulfonates in soils (2021) · cites this paper as Oliver et al., 2020
Silt and clay fractions have a positive effect on the K_d of PFOS, PFOA and PFHxS in sediments.
“The silt and clay fractions have also been reported to have a positive effect on the K d of PFOS, PFOA and PFHxS in sediments (Oliver et al., 2020)”
From Modelling the sorption behaviour of perfluoroalkyl carboxylates and perfluoroalkane sulfonates in soils (2021) · cites this paper as Oliver et al., 2020
Cites
Gee, G. W., & Bauder, J. W. (1986) · Soil Science Society of America book series · doi:10.2136/sssabookser5.1.2ed.c15 · Cited by 8,834 · see citing works
Perfluoroalkyl Acids: A Review of Monitoring and Toxicological Findings
Lau, C., Anitole, K., Hodes, C., Lai, D., Pfahles-Hutchens, A., & Seed, J. (2007) · Toxicological Sciences · doi:10.1093/toxsci/kfm128 · Cited by 2,620 · see citing works
Sources, fate and transport of perfluorocarboxylates
Prevedouros, K., Cousins, I. T., Buck, R. C., & Korzeniowski, S. H. (2006) · Environmental Science & Technology · doi:10.1021/es0512475 · Cited by 2,594 · see citing works
A Never-Ending Story of Per- and Polyfluoroalkyl Substances (PFASs)?
Wang, Z., DeWitt, J. C., Higgins, C. P., & Cousins, I. T. (2017) · Environmental Science & Technology · doi:10.1021/acs.est.6b04806 · Cited by 1,921 · see citing works
Adsorption behavior and mechanism of perfluorinated compounds on various adsorbents—A review
Du, Z., Deng, S., Bei, Y., Huang, Q., Wang, B., Huang, J., & Yu, G. (2014) · Journal of Hazardous Materials · doi:10.1016/j.jhazmat.2014.04.038 · Cited by 1,236 · see citing works
Soil Chemical Methods - Australasia
Rayment, G. E., & Lyons, D. J. (2010) · CSIRO Publishing eBooks · doi:10.1071/9780643101364 · Cited by 1,195 · see citing works
Comparative organic geochemistries of soils and marine sediments
Hedges, J. I., & Oades, J. (1997) · Organic Geochemistry · doi:10.1016/s0146-6380(97)00056-9 · Cited by 745 · see citing works
Inorganic Carbon Analysis by Modified Pressure-Calcimeter Method
Sherrod, L., Dunn, G., Peterson, G., & Kolberg, R. (2002) · Soil Science Society of America Journal · doi:10.2136/sssaj2002.2990 · Cited by 641 · see citing works
Backe, W. J., Day, T. C., & Field, J. A. (2013) · Environmental Science & Technology · doi:10.1021/es3034999 · Cited by 611 · see citing works
Soil Physical Measurement and Interpretation for Land Evaluation
Coughlan, K. J., Cresswell, H. P., & McKenzie, N. J. (2002) · CSIRO Publishing eBooks · doi:10.1071/9780643069879 · Cited by 603 · see citing works
Keil, R. G., Tsamakis, E., Fuh, C. B., Giddings, J. C., & Hedges, J. I. (1994) · Geochimica et Cosmochimica Acta · doi:10.1016/0016-7037(94)90512-6 · Cited by 513 · see citing works
Li, Y., Oliver, D. P., & Kookana, R. S. (2018) · The Science of The Total Environment · doi:10.1016/j.scitotenv.2018.01.167 · Cited by 331 · see citing works
Self-citationKrafft, M. P., & Riess, J. G. (2014) · Chemosphere · doi:10.1016/j.chemosphere.2014.08.039 · Cited by 310 · see citing works
Aquatic Toxicology of Perfluorinated Chemicals
Giesy, J. P., Naile, J. E., Khim, J. S., Jones, P. D., & Newsted, J. L. (2009) · Reviews of Environmental Contamination and Toxicology · doi:10.1007/978-1-4419-1157-5_1 · Cited by 286 · see citing works
Ahmad, R., Kookana, R. S., Alston, A. M., & Skjemstad, J. O. (2001) · Environmental Science & Technology · doi:10.1021/es001446i · Cited by 266 · see citing works
Self-citationSources, Ages, and Alteration of Organic Matter in Estuaries
Canuel, E. A., & Hardison, A. K. (2015) · Annual Review of Marine Science · doi:10.1146/annurev-marine-122414-034058 · Cited by 264 · see citing works
Jeon, J., Kannan, K., Lim, B. J., An, K. G., & Kim, S. D. (2011) · Journal of Environmental Monitoring · doi:10.1039/c0em00791a · Cited by 263 · see citing works
Li, F., Fang, X., Zhou, Z., Liao, X., Zou, J., Yuan, B., & Sun, W. (2018) · The Science of The Total Environment · doi:10.1016/j.scitotenv.2018.08.209 · Cited by 259 · see citing works
Ahrens, L., Yamashita, N., Yeung, L. W. Y., Taniyasu, S., Horii, Y., Lam, P. K. S., & Ebinghaus, R. (2009) · Environmental Science & Technology · doi:10.1021/es901213s · Cited by 259 · see citing works
Physicochemical properties and aquatic toxicity of poly- and Perfluorinated compounds
Ding, G., & Peijnenburg, W. J. G. M. (2013) · Critical Reviews in Environmental Science and Technology · doi:10.1080/10643389.2011.627016 · Cited by 241 · see citing works
Ahrens, L., Yeung, L. W. Y., Taniyasu, S., Lam, P. K. S., & Yamashita, N. (2011) · Chemosphere · doi:10.1016/j.chemosphere.2011.06.046 · Cited by 239 · see citing works
Determination of carbon and nitrogen in samples of various soils by the dry combustion
Matejovič, I. (1997) · Communications in Soil Science and Plant Analysis · doi:10.1080/00103629709369892 · Cited by 224 · see citing works
Sorption of perfluorooctane sulfonate and perfluorooctanoate on activated sludge
Zhou, Q., Deng, S., Zhang, Q., Fan, Q., Huang, J. G., & Yu, G. (2010) · Chemosphere · doi:10.1016/j.chemosphere.2010.08.009 · Cited by 171 · see citing works
Sorption of PFOA onto different laboratory materials: Filter membranes and centrifuge tubes
Lath, S., Knight, E. R., Navarro, D. A., Kookana, R. S., & McLaughlin, M. J. (2019) · Chemosphere · doi:10.1016/j.chemosphere.2019.01.096 · Cited by 169 · see citing works
Self-citationSorption of perfluorooctane sulfonate (PFOS) on marine sediments
Chen, H., Zhang, C., Yu, Y., & Han, J. (2012) · Marine Pollution Bulletin · doi:10.1016/j.marpolbul.2012.03.012 · Cited by 126 · see citing works
Wilson, M. A., Vassallo, A. M., Perdue, E. M., & Reuter, J. H. (1987) · Analytical Chemistry · doi:10.1021/ac00131a004 · Cited by 82 · see citing works
Sorption of perfluorooctane sulfonate to carbon nanotubes in aquatic sediments
Kwadijk, C. J. A. F., Velzeboer, I., & Koelmans, A. A. (2012) · Chemosphere · doi:10.1016/j.chemosphere.2012.08.041 · Cited by 70 · see citing works
Zhu, Z., Wang, T., Wang, P., Lu, Y.-L., & Giesy, J. (2014) · Marine Pollution Bulletin · doi:10.1016/j.marpolbul.2013.12.042 · Cited by 63 · see citing works
Kahkashan, S., Wang, X., Chen, J., Bai, Y., Ya, M., Wu, Y., Cai, Y., Wang, S., Saleem, M., Aftab, J., et al. (2019) · Chemosphere · doi:10.1016/j.chemosphere.2019.06.219 · Cited by 50 · see citing works
Ding, G., Xue, H., Zhang, J., Cui, F., & He, X. (2017) · Marine Pollution Bulletin · doi:10.1016/j.marpolbul.2017.12.020 · Cited by 37 · see citing works
Dong, W., Liu, B., Song, Y., Zhang, H., Li, J., & Cui, X. (2017) · Archives of Environmental Contamination and Toxicology · doi:10.1007/s00244-017-0474-x · Cited by 31 · see citing works
Spectroscopic studies on soil organic fractions i. ir and nmr spectra
Sciacovelli, O., Senesi, N., Solinas, V., & Testini, C. (1977) · Soil Biology and Biochemistry · doi:10.1016/0038-0717(77)90037-2 · Cited by 24 · see citing works
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Nguyen, T. M. H., Bräunig, J., Thompson, K., Thompson, J., Kabiri, S., Navarro, D. A., Kookana, R. S., Grimison, C., Barnes, C. M., Higgins, C. P., et al. (2020) · Environmental Science & Technology · doi:10.1021/acs.est.0c05705 · Cited by 523 · see citing works
Self-citationMei, W., Sun, H., Song, M., Jiang, L., Li, Y., Lu, W., Ying, G.-G., Luo, C., & Zhang, G. (2021) · Environment International · doi:10.1016/j.envint.2021.106642 · Cited by 209 · see citing works
Campos-Pereira, H., Kleja, D. B., Ahrens, L., Enell, A., Kikuchi, J., Pettersson, M., & Gustafsson, J. P. (2023) · Chemosphere · doi:10.1016/j.chemosphere.2023.138133 · Cited by 113 · see citing works
Fabregat-Palau, J., Vidal, M., & Rigol, A. (2021) · Science of The Total Environment · doi:10.1016/j.scitotenv.2021.149343 · Cited by 99 · see citing works
Kookana, R. S., Navarro, D. A., Kabiri, S., & McLaughlin, M. J. (2022) · Soil Research · doi:10.1071/sr22183 · Cited by 94 · see citing works
Self-citationEhsan, M. N., Riza, M., Pervez, M. N., Li, C., Zorpas, A. A., & Naddeo, V. (2024) · Case Studies in Chemical and Environmental Engineering · doi:10.1016/j.cscee.2024.100643 · Cited by 90 · see citing works
Sorption and desorption kinetics of PFOS to pristine microplastic
Cormier, B., Borchet, F., Kärrman, A., Szot, M., Yeung, L. W. Y., & Keiter, S. H. (2021) · Environmental Science and Pollution Research · doi:10.1007/s11356-021-15923-x · Cited by 81 · see citing works
Yin, C., Pan, C., Xiao, S.-K., Wu, Q., Tan, H., & Yu, K. (2022) · Environmental Pollution · doi:10.1016/j.envpol.2022.118957 · Cited by 71 · see citing works
Ge, F., Zhou, B., Yuan, R., Luo, S., Gai, N., & Chen, H. (2024) · The Science of The Total Environment · doi:10.1016/j.scitotenv.2024.171785 · Cited by 65 · see citing works
Campos-Pereira, H., Makselon, J., Kleja, D. B., Prater, I., Kögel‐Knabner, I., Ahrens, L., & Gustafsson, J. P. (2022) · Chemosphere · doi:10.1016/j.chemosphere.2022.134167 · Cited by 60 · see citing works
Aly, N. A., Luo, Y.-S., Liu, Y., Casillas, G., McDonald, T. J., Kaihatu, J. M., Jun, M., Ellis, N., Gossett, S., Dodds, J. N., et al. (2020) · Environmental Pollution · doi:10.1016/j.envpol.2020.115009 · Cited by 52 · see citing works
Simpson, S. L., Liu, Y., Spadaro, D. A., Wang, X., Kookana, R. S., & Batley, G. E. (2021) · Science of The Total Environment · doi:10.1016/j.scitotenv.2021.146008 · Cited by 51 · see citing works
Self-citationFirouzjaei, M. D., Zolghadr, E., Ahmadalipour, S., Taghvaei, N., Afkhami, F. A., Nejati, S., & Ellıott, M. (2021) · Environmental Chemistry Letters · doi:10.1007/s10311-021-01340-6 · Cited by 48 · see citing works
Brusseau, M. L. (2023) · Environments · doi:10.3390/environments10100175 · Cited by 43 · see citing works
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Self-citationWu, J.-Y., Gu, L., Hua, Z.-L., Liang, Z.-Y., Chu, K.-J., & He, X. (2021) · Chemosphere · doi:10.1016/j.chemosphere.2021.130977 · Cited by 32 · see citing works
Zhou, Y., Yang, L., Wang, T., Meng, J., Shi, B., Bi, R., & Wang, X. (2022) · Journal of Hazardous Materials · doi:10.1016/j.jhazmat.2022.129558 · Cited by 33 · see citing works
Liu, L., Che, N., Wang, S., Liu, Y., & Li, C. (2021) · ACS Omega · doi:10.1021/acsomega.1c00044 · Cited by 31 · see citing works
Lin, X., Wang, S., Li, Q., Li, Y., Yamazaki, E., Yamashita, N., & Wang, X. (2021) · Chemosphere · doi:10.1016/j.chemosphere.2021.132812 · Cited by 26 · see citing works
Ding, X., Song, X., Xu, M., Yao, J., Xu, C., Tang, Z., & Zhang, Z. (2022) · The Science of The Total Environment · doi:10.1016/j.scitotenv.2021.152814 · Cited by 26 · see citing works
Xie, J., Liu, S., Su, L., Zhao, X., Wang, Y., & Feng, T. (2024) · The Science of The Total Environment · doi:10.1016/j.scitotenv.2024.176575 · Cited by 25 · see citing works
Shimizu, M. S., García, R., Avery, G. B., Kieber, R. J., Skrabal, S. A., & Mead, R. N. (2022) · Environmental Science Processes & Impacts · doi:10.1039/d2em00246a · Cited by 24 · see citing works
Singh, N., Askeland, M., Coggan, T. L., & Jones, O. A. H. (2025) · Environmental Pollution · doi:10.1016/j.envpol.2025.127254 · Cited by 21 · see citing works
Singh, N., Paz-Ferreiro, J., Askeland, M. P. J., Coggan, T. L., & Jones, O. A. H. (2025) · Science of The Total Environment · doi:10.1016/j.scitotenv.2025.179196 · Cited by 19 · see citing works
Hazrati, S., Kumpienė, J., Leiviskä, T., & Carabante, I. (2025) · Environmental Science and Pollution Research · doi:10.1007/s11356-025-37024-9 · Cited by 18 · see citing works
Lin, H., Xia, X., Zhang, Q., Zhai, Y., & Wang, H. (2020) · The Science of The Total Environment · doi:10.1016/j.scitotenv.2020.141916 · Cited by 15 · see citing works
Ayenew, B., & Getu, E. (2025) · Environmental Health Insights · doi:10.1177/11786302241311679 · Cited by 14 · see citing works
Shaffer, K. W., Ye, X., Lee, C., Shipley, O. N., McDonough, C. A., Venkatesan, A. K., & Gobler, C. J. (2025) · The Science of The Total Environment · doi:10.1016/j.scitotenv.2025.178742 · Cited by 16 · see citing works
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Chen, J., Huang, H., Li, R., Yu, J.-C., Hu, Z., Zhao, X., Li, Y., & Wang, W. (2023) · Emerging Contaminants · doi:10.1016/j.emcon.2023.100260 · Cited by 15 · see citing works
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Li, Q., Liu, C., Wang, S., Liu, Y.-W., Ma, X., Li, Y.-Y., Li, W., & Wang, X.-H. (2024) · Environmental Research · doi:10.1016/j.envres.2024.119978 · Cited by 23 · see citing works
Strivens, J. E., Kuo, L., Liu, Y., & Noor, K. L. (2021) · Marine Pollution Bulletin · doi:10.1016/j.marpolbul.2021.112381 · Cited by 12 · see citing works
Juhasz, A. L., Kastury, F., Jones, R., Seeborun, M., Cáceres, T. P., Herde, C., Cavallaro, M., Dilmetz, S. J., Hutchings, J., Grebneva, Y., et al. (2024) · Environment International · doi:10.1016/j.envint.2024.109232 · Cited by 10 · see citing works
Lyu, Y., Wang, B., & Brusseau, M. L. (2023) · Journal of Hazardous Materials Letters · doi:10.1016/j.hazl.2023.100084 · Cited by 9 · see citing works
Cáceres, T., Jones, R., Kastury, F., & Juhasz, A. L. (2024) · Environmental Pollution · doi:10.1016/j.envpol.2024.124489 · Cited by 10 · see citing works
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Carey, G. R., Danko, A., Pham, A., Soderberg, K., Hoagland, B., & Sleep, B. E. (2024) · Ground Water · doi:10.1111/gwat.13456 · Cited by 8 · see citing works
Independent mode sorption of perfluoroalkyl acids by single and multiple adsorbents
Krop, H. B., Eschauzier, C., van der Roest, E., Parsons, J. R., & de Voogt, P. (2021) · Environmental Science Processes & Impacts · doi:10.1039/d1em00322d · Cited by 6 · see citing works
Issaka, E., Adams, M., Agyekum, E. A., Baffoe, J., & Tornyeava, B. (2025) · AIMS Environmental Science · doi:10.3934/environsci.2025015 · Cited by 5 · see citing works
Yang, S., Gwak, J., Cha, J., Park, K., Kim, Y., Kim, S.-Y., Lee, Y., Choi, D. H., Ra, K., Moon, H., et al. (2025) · Marine Pollution Bulletin · doi:10.1016/j.marpolbul.2025.118140 · Cited by 6 · see citing works
Kolobaric, A., Cozzolino, D., & Chapman, J. (2023) · Royal Society of Chemistry eBooks · doi:10.1039/bk9781839166099-00254 · Cited by 5 · see citing works
A critical review of per- and polyfluoroalkyl substances adsorption by soil
Ghaznavi, S. M., Choudhary, M., Hannan, M., Hettiarachchi, G. M., & Apul, O. G. (2025) · Journal of Hazardous Materials Organics · doi:10.1016/j.hazmo.2025.100001 · Cited by 6 · see citing works
Openiyi, E. O., Lee, L., Young, H. E., Carpenter, A., & Carpenter, R. (2025) · Journal of Agricultural and Food Chemistry · doi:10.1021/acs.jafc.5c08985 · Cited by 4 · see citing works
PFAS Dynamics in a Macrotidal Estuary: Insights from Fractionated Particle Components
Liu, C., Li, Q., Ma, X., Wang, S., Cheng, P., Li, Y., Chen, Y., & Wang, X. (2025) · Environmental Science & Technology · doi:10.1021/acs.est.5c07778 · Cited by 4 · see citing works
Krupa, P. M., Lotufo, G., Boyda, J., Melby, N. L., & Kimble, A. N. (2024) · Ecotoxicology and Environmental Safety · doi:10.1016/j.ecoenv.2024.117483 · Cited by 3 · see citing works
Li, M.-H., Zhang, R.-J., Tian, W.-J., Lu, Z.-Y., Yu, X.-R., Liu, B.-K., Huo, B.-J., Chen, Z., & Wang, X. (2025) · Marine Pollution Bulletin · doi:10.1016/j.marpolbul.2025.118803 · Cited by 3 · see citing works
Ehsan, M. N. (2026) · Journal of Environmental Quality · doi:10.1002/jeq2.70148 · Cited by 2 · see citing works
PFAS from a Discrete‐Event Terrestrial Source Migrates with Groundwater to Intertidal Seepages
Briggs, M. A., White, E. A., Scordato, P. T., Lind, H., O'neal, Z. O., Rey, D. M., McCobb, T. D., Green, C. T., & LeBlanc, D. R. (2026) · Ground Water · doi:10.1111/gwat.70063 · Cited by 1 · see citing works
Liu, M., Yan, Z., Zhu, N., Yang, F., Wang, G., Wang, X., Mu, Q., Jones, O. A. H., Han, X., & Zhang, C. (2026) · Water Research · doi:10.1016/j.watres.2026.126350 · Cited by 1 · see citing works
Ackerly, K. L., Walsh, G., Roark, K. J., DiBona, E. R., Osentowski, R., Rivera, T., Lin, L., & Nielsen, K. M. (2026) · Environmental Research · doi:10.1016/j.envres.2026.125346 · Cited by 1 · see citing works
Dorn, A., Kaiser, C., Hammel, K., Dalkmann, P., Faber, D., Trisna, A., Hellpointner, E., Telscher, M., Lamshoeft, M., Bruns, E., et al. (2021) · The Science of The Total Environment · doi:10.1016/j.scitotenv.2021.151096
PFAS hotspots in Swedish offshore sediments: Regional patterns and sorption dynamics
Niarchos, G., Ruin, E., Josefsson, S., Wiberg, K., & Ahrens, L. (2026) · Marine Pollution Bulletin · doi:10.1016/j.marpolbul.2026.119807
- Authors
- Oliver, D. P., Navarro, D. A., Baldock, J., Simpson, S. L., & Kookana, R. S.
- Affiliations
- CSIRO Land and Water (AU)
- Commonwealth Scientific and Industrial Research Organisation (AU)
- Corresponding author
- Oliver, Danielle P.
- Venue
- Science of The Total Environment
- Publisher
- Elsevier BV
- Published
- 2020-06
- Volume
- 720
- Pages
- 137263
- ISSN
- 0048-9697 (ISSN-L)
- OpenAlex
- W3008179831
- Cited by
- 52
- References
- 32
- Citations by year
- 2026: 5 · 2025: 12 · 2024: 9 · 2023: 5 · 2022: 7 · 2021: 11 · 2020: 3
- FWCI
- 2.41
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- The Science of The Total Environment (publishedVersion)
- PubMed (publishedVersion)
- Funders
- NSW Environmental Trust
- 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 › Environmental Science › Environmental Chemistry › Environmental Chemistry and Analysis
- Keywords
- per- and polyfluoroalkyl substances, PFAS sorption, estuarine sediments, coastal sediments, PFOS, perfluorooctanoic acid, perfluorohexane sulfonic acid, organic carbon content, sorption coefficient, marine sediment
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