Investigating the Leaching and Transformation of PFAS in AFFF Encapsulated Concrete through High-Resolution Mass SpectrometryPer- and Polyfluoroalkyl Substances (PFAS) in the Environment
Oral Presentation
Prepared by M. Deible1, L. Miller2, V. Johnson2, T. Matsubara2, S. Yang1, J. Runco1, M. Baker1
1 - RJ Lee Group, 800 Presque Isle Drive, Pittsburgh, PA, 15239, United States
2 - Shimadzu Scientific Instruments, Inc., 7102 Riverwood Drive, Columbia, MD, 21046, United States
Contact Information: [email protected]; 724-387-1943
ABSTRACT
Concrete exposure to AFFF is a well-established problem. Airports and other facilities where AFFF have been used can act as a point source for release of PFAS to the environment. Encapsulation of hazardous materials in concrete has long been considered as an easy and low-cost solution. Leaching of AFFF from exposed concrete would indicate that encapsulation is not viable for AFFF contaminated water. Here we explore the leachability of AFFF from various types of concrete as well as concrete enhanced with known PFAS adsorbents and demonstrate a decrease in leaching potential. We further explore leachability and transformation of PFAS components of AFFF using high resolution mass spectrometry.
