but also on other PFAS.These include perfluorocarboxylates (PFCAs) and perfluorosulfonates (PFSAs) with different chain lengths (typically between C4 and C14), fluorotelomer carboxylic acids (FTCAs) and nonionic (volatile) compounds such as fluorotelomer alcohols (FTOHs), perfluorosulfonamide (PFOSA) and N-substituted sulfonamides