Nontarget and Suspect Screening of Fluorinated Ionic Liquids and PFAS in European Wastewaters Using Supercritical Fluid Chromatography.

ABSTRACT: Per- and polyfluoroalkyl substances (PFAS) and fluorinated ionic liquids were investigated in municipal effluents from 30 wastewater treatment plants (WWTPs) across 15 European countries using supercritical fluid chromatography-high-resolution mass spectrometry (SFC-HRMS) for nontarget screening. Bis-perfluoroalkyl sulfonimide (bis-FASI) ionic liquids were detected as bis(trifluoromethanesulfonyl)imide (NTf₂^-), two rarely reported homologues (±2 CF₂, namely FSI^- and BETI^-), and two previously unreported homologues (±1 CF₂, namely FTFSI^- and FTNTf₂^-). Bis-FASIs were present in 85% of samples and were more abundant in effluents from larger WWTPs. The fluorinated anion PF₆^-

SUBMITTER: Tisler S 

PROVIDER: S-EPMC12509314 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature