Review on Methods for Assessing and Predicting Leaching of PFAS from Solid Matrices

• DOI: 10.1007/s40726-024-00326-6
• Publication Date: 2024-08-22T12:05:36Z
• Authors: Divina A. Navarro; Shervin S. Kabiri; Karl Bowles; Emma R. Knight; Jennifer Braeunig; Prashant Srivastava; Naomi J. Boxall; Grant Douglas; Jochen Mueller; Mike J. McLaughlin; Mike Williams; Rai S. Kookana
• Keywords: Lysimeter; Contaminated land

Abstract Purpose of Review Per- and poly-fluoroalkyl substances (PFAS) are prevalent environmental contaminants detected in materials such as soils, biosolids, wastes. Understanding PFAS leaching is crucial for assessing risks associated with leaving impacted material place, reuse, or disposal. However, there limited guidance on laboratory methods to measure extent rate leaching. This review aims identify the best that reflective relevant release scenarios. Recent Findings Various have been applied assess from contaminated materials. The most common batch simulate particular conditions (e.g. rainfall, landfill), intention providing conservative estimates (worst-case scenarios) cumulative over time. Columns, static leaching, rainfall simulators also used less aggressive field-like conditions. While common, pan suction lysimeters situ. Most use saturated do not account possible influence air–water interface accumulation wetting–drying cycles A notable gap scarcity data benchmarking laboratory-leached concentrations real-world concentrations. Establishing this relationship reliable protocols. Summary article reviews estimating Given variety methods, selecting those assessment objectives essential. Specific scenarios requiring assessment, disposal, discussed. knowledge gaps presented could be improve existing better predictions understanding leachability. Graphical