Comparing the Leaching Behavior of Per- and Polyfluoroalkyl Substances from Contaminated Soils Using Static and Column Leaching Tests

Autor: Shervin Kabiri, William Tucker, Divina A. Navarro, Jennifer Bräunig, Kristie Thompson, Emma R. Knight, Thi Minh Hong Nguyen, Charles Grimison, Craig M. Barnes, Christopher P. Higgins, Jochen F. Mueller, Rai S. Kookana, Michael J. McLaughlin
Rok vydání: 2021
Předmět:
Zdroj: Environmental sciencetechnology. 56(1)
ISSN: 1520-5851
Popis: Soil contaminated with aqueous film-forming foams (AFFFs) containing per- and polyfluoroalkyl substances (PFASs) at firefighting training sites has become a major concern worldwide. To date, most studies have focused on assessing soil-water partitioning behavior of PFASs and the key factors that can affect their sorption, whereas PFASs leaching from contaminated soils have not yet been widely investigated. This study evaluated the leaching and desorption of a wide range of PFASs from twelve contaminated soils using the Australian Standard Leaching Procedure (ASLP), the U.S. EPA Multiple Extraction Procedure (MEP), and Leaching Environmental Assessment Framework (LEAF). All three leaching tests provided a similar assessment of PFAS leaching behavior. Leaching of PFASs from soils was related to C-chain lengths and their functional head groups. While short-chain (CF
Databáze: OpenAIRE