Data to: Evaluation of Standardised (ISO) Leaching Tests for Assessing Leaching and Solid–Solution Partitioning of Perfluoroalkyl Substances (PFAS) in Soils

The data set is the raw data derived for the study by Kleja et al (2025). The set contains results for one field-contaminated soil and three spiked soils (12 PFAS contaminants) aged for 5 months, all of which were examined using batch tests in accordance with ISO 21268-2: 2019 with either deionised water or 1 mM CaCl2 as leachant (liquid-to-solid phase ratio (L/S) of 10) and percolation tests according to ISO 21268-3:2019 with 1 mM CaCl2 as leaching fluid.

The solubility of PFAS as a function of tumbling time (1, 8, 24, 48, 96 and 240 hours) with 1 mM CaCl2 as leachant in the batch test (ISO 21268-2:2019) was also investigated. Leach-ate (eluate) produced using ISO 21268-3:2019 was analysed for PFAS, pH and conductivi-ty, while leachate from ISO 21268-2:2019 was also analysed for DOC, Al, Ca, Fe, K, Mg, Mn, Na, Cl and SO4. Kleja, D.B.; Campos-Pereira, H.; Kikuchi-McIntosh, J.; Petersson, M.; Golovko, O.; Enell, A. Evaluation of Standardised (ISO) Leaching Tests for Assessing Leaching and Solid–Solution Partitioning of Perfluoroalkyl Substances (PFAS) in Soils.