Table 1.
List of main PFAS categories and subgroups.
| Non-Polymeric PFAS | |||
|---|---|---|---|
| Perfluorinated PFAS | Polyfluorinated PFAS | ||
| Subgroup | Examples | Subgroup | Examples |
| Perfluoroalkyl acids (PFAAs) Perfluoroalkane sulfonic acids & sulfonates (PFSAs) Perfluoroalkane sulfnic acids (PFSIAs) Perfluorocarboxylic acids & carboxylates (PFCAs) Perfluoroalkyl phosphonic acids (PFPAs) Perfluoroalkyl phosphinic acids (PFPIAs) |
PFBS, PFHxS, PFOS PFOSI PFBA, PFHxA, PFOA C8-PFPA C8/C8-PFPiA |
Fluorotelomer compounds (FT) | 6:2 FTO, 8:2 FTI |
| Perfluoroalkane sulfonamido compounds (Me/Et/Bu-FASAs) Miscellaneous |
MeFOSA, FOSE 4,8-Dioxa-3H-perfluorononanoate |
||
| Perfluoroalkyl ether acids (PFEAs) | GenX, Adona, F-53B | ||
| Perfluoroalkane sulfonamides (FASA) | FOSA | ||
| Perfluoroalkane sulfonyl fluorides (PASFs) | PBSF, POSF | ||
| Perfluoroalkyl iodides (PFAIs) | PFHxI | ||
| Perfluoroalkanoyl fluorides (PAFs) | POF | ||
| Perfluoroalkyl aldehydes (PFALs) | PFNAL | ||
| Polymeric PFAS | |||
| Subgroup | Examples | ||
| Fluoropolymers | PVDF, FEP, PFA, ETFE, PTFE (Teflon) | ||
| Side-chain Fluorinated Polymers | Fluorinated urethane/acrylate/methacrylate/oxetane plolymers | ||
| Perfluoropolyethers (PFPEs) | PFPE-BP, Fluorolink-PFPE | ||