Table 3.

Search terms on PFAS.

PFAS, General Terms
PFAS, Perfluoroalkyl substances
Perfluoroalkyl substances
Perfluoroalkyl acids
Perfluoroalkyl carboxylates (PFCAs)
Perfluroalkylated substances
PFC, Perfluorinated compound
Perfluorinated sulfonates (PFSAs)
PFAS compounds *
PFCAs
C8	PFOA, perfluorooctanoic acid
C9	PFNA, perfluorononanoic acid
C10	PFDA, perfluorodecanoic acid or perfluoro-n-decanoic acid
PFSAs
C6	PFHxS, perfluorohexanesulfonic acid or perfluoro-1-hexanesulfonate
C8	PFOS, perfluorooctane sulfonic acid or perfluorooctane sulfonate

* PFAS compounds listed according to functional group (i.e., carboxylated or sulfonated) and carbon chain length (C6–C10).