Ion Mobility-Constrained Nontargeted Screening of PFAS in Complex Environmental Matrices Using 18-T FTICR Mass Spectrometry.
Reliable screening of per- and polyfluoroalkyl substances (PFASs) in complex environmental matrices remains challenging due to severe spectral congestion and matrix-derived interferences under nontargeted conditions. Accurate-mass criteria from high-resolution mass spectrometry (HRMS) alone are often insufficient to su...