Ambient and Indoor Air Sampling for Per- and Poly-fluorinated Alkyl Substances (PFAS)Air Monitoring, Methods, and Technology
Oral Presentation
Prepared by J. Hoisington1, D. Alonso2
1 - Restek, 110 Benner Circle, Bellefonte, PA, 16823, United States
2 - Leco, 3000 Lakeview Ave., St. Joseph, MI, 49085, United States
Contact Information: [email protected]; 1-814-353-1300x2473
ABSTRACT
PFAS compounds have become a topic of great concern in recent years, due to their ubiquity and health effects, such as cancer, thyroid disease, and pregnancy issues. While numerous methods exist for the analysis of PFAS in water matrices, the analysis of PFAS in air is relatively underdeveloped. In 2021 the EPA released draft method OTM-45, providing a method for stack gas sampling, but official methods for ambient and indoor air sampling are still needed. The use of various sampling techniques including thermal desorption, canisters, polyurethane foam, and styrene-divinylbenzene (SDVB) resins have been found in literature.
This presentation will outline a method for ambient and indoor air monitoring of PFAS using small-volume samplers with SDVB resin. The PFAS will be extracted from the resin samples using Accelerated Solvent Extraction (ASE) before analysis by LC-MS/MS and GC-MS. Breakthrough volumes and recoveries for commonly tested PFAS compounds will be evaluated. A collection of real-world samples will be taken and analyzed by both targeted analysis and non-target GC-TOFMS analysis.
