2026-04-18T07:25:40Zhttps://recercat.cat/oai/request
oai:recercat.cat:10256/194712024-06-18T11:54:10Zcom_2072_452955com_2072_2054col_2072_453077
RECERCAT author Sörengård, Mattias author Ahrens, Lutz author Alygizakis, Nikiforos A. author Jensen, Pernille Erland author Gago Ferrero, Pablo 2024-06-18T11:54:09Z 2024-06-18T11:54:09Z 2020-12 http://hdl.handle.net/10256/19471 Contamination of soils with organic pollutants is an increasing global problem, so novel soil remediation techniques are urgently needed. One such technique is electrokinetic remediation, in which an electric field is applied over the soil to extract contaminants. Previous evaluations of the technique have been limited to a few specific compounds. In this study, we integrated the latest advances in high-resolution mass spectrometry (HRMS) to identify molecular fingerprints, and used the results to improve the mechanistic understanding necessary for successful remediation. A laboratory-scale 0.38 mA cm−2 electrodialytic treatment was applied for 21 days to a contaminated soil from a firefighter training facility in Sweden. Non-target analysis allowed generic evaluation of changes in the soil organic fraction by tentatively determining the elemental composition of compounds present. The results showed that smaller oxygen-rich molecules were significantly transported to the anode by electromigration, while larger hydrogen-saturated molecules were transported to the cathode by electroosmotic flow. Wide suspect screening with >3000 per- and polyfluoroalkyl substances (PFASs) tentatively identified seven new PFASs in the test soil, including perfluoroheptanesulfonic acid (PFHpS), and PFASs with butoxy, ethoxy, ethanol, and ethylcyclohexanesulfonate functional groupsThis work was supported by the project PFAS-PURE from VINNOVA, Sweden (2015-03561). Pablo Gago-Ferrero acknowledges the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreement Smart-Workflow No 747698 Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Contaminants orgànics Polluants organiques Sòls -- Contaminació Soil pollution Non-target and suspect screening strategies for electrodialytic soil remediation evaluation: Assessing changes in the molecular fingerprints and per- and polyfluoroalkyl substances (PFASs) info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion peer-reviewed