Shedding Light on PFAS Dark Matter Using a Novel GC-HRMS Approach

With thousands of documented perfluoroalkyl and polyfluoroalkyl substances (PFAS), novel methods are needed to comprehensively characterize these fluorinated compounds in the environment, biota, and humans. Despite being the most common approach, liquid chromatography high-resolution mass spectrometry (LC-HRMS) only covers a fraction of PFAS. To address this gap, we developed a nontargeted gas chromatography high-resolution mass spectrometry …