Effect of geochemical conditions on PFAS release from AFFF-impacted saturated soil columns
Anastasia Nickerson, Andrew C. Maizel, Charles E. Schaefer, James F. Ranville, Christopher P. Higgins
Abstract
4:2 fluorotelomer sulfonate, perfluorobutane sulfonamido acetic acid) eluted significantly earlier in both pH 3 and pH 10/high NaCl columns compared to pH 7 columns. The results of this study suggest that shifts in pH for soils located at AFFF-impacted sites - particularly raising the pH - may mobilize sorbed PFASs, specifically longer-chain and zwitterionic compounds that are typically strongly sorbed to soil.
Topics & Concepts
ChemistrySoil waterEnvironmental chemistrySulfonateOrganic matterAqueous solutionAcetic acidSalt (chemistry)GroundwaterElutionSodiumChromatographyOrganic chemistryGeologySoil scienceGeotechnical engineeringPer- and polyfluoroalkyl substances researchToxic Organic Pollutants ImpactChemical Analysis and Environmental Impact