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 published methods exist for the analysis of PFAS in water matrices, the analysis of PFAS in air is relatively underdeveloped. In 2021, the EPA released the draft method OTM-45, outlining a sampling procedure and analytical guidelines for PFAS in source air using XAD-2 resin, liquid impingers, and LC-MS/MS analysis.
This presentation will outline a method for ambient and indoor air monitoring of PFAS based on OTM-45 using small volume samplers and Restek’s Ultra Clean Resin. A method for cleaning and extracting the resin-filled samplers using Accelerated Solvent Extraction (ASE) will be shown that provides a simple method to both clean the sampling apparatus and extract samples.
