Draft objective for per- and polyfluoroalkyl substances in Canadian drinking water: References and appendices

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References

Appendix A: List of PFAS and minimum reporting levels and detection limits for analysis by U.S. EPA Methods 533 and 537.1
Abbreviation

PFAS

(carbon chain length)

CASRN

In U.S. EPA Method 533

(Y/N)

In U.S. EPA Method 537.1 (Y/N) 533 MRLFootnote a (DL)Footnote bng/L 537.1 DLFootnote b ng/L
11Cl-PF3OUdS 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (C9) 763051-92-9 Y Y 5 (1.5) 1.5
9Cl-PF3ONS 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (C8) 756426-58-1 Y Y 2 (1.4) 1.8
ADONA 4,8-Dioxa-3H-perfluorononanoic acid (C7) 919005-14-4 Y Y 3 (0.88) 0.55
HFPO-DAFootnote c Hexafluoropropylene oxide dimer acid (C6) 13252-13-6 Y Y 5 (1.9) 1.9
PFBS Perfluorobutanesulfonic acid (C4) 375-73-5 Y Y 3 1.8
PFDA Perfluorodecanoic acid (C10) 335-76-2 Y Y 3 (1.6) 1.6
PFDoA Perfluorododecanoic acid (C12) 307-55-1 Y Y 3 (1.2) 1.2
PFHpA Perfluoroheptanoic acid (C7) 375-85-9 Y Y 3 (0.71) n/a
PFHxS Perfluorohexanesulfonic acid (C6) 355-46-4 Y Y 3 (1.4) 1.4
PFHxA Perfluorohexanoic acid (C6) 307-24-4 Y Y 3 (1.7) 1.0
PFNA Perfluorononanoic acid (C9) 375-95-1 Y Y 4 (0.70) 0.70
PFOS Perfluorooctanesulfonic acid (C8) 1763-23-1 Y Y 4 (1.1) 1.1
PFOA Perfluorooctanoic acid (C8) 335-67-1 Y Y 4 (0.53) 0.53
PFUnA *Perfluoroundecanoic acid (C11) 2058-94-8 Y Y 2 (1.6) 1.6
NFDHA Nonafluoro-3,6-dioxaheptanoic acid (C7) 151772-58-6 Y N 20 (16)Footnote * n/a
PFBA Perfluorobutanoic acid (C4) 375-22-4 Y N 5 (13)Footnote * n/a
8:2FTS 1H,1H, 2H, 2H-Perfluorodecane sulfonic acid (C8) 39108-34-4 Y N 5 (9.1)Footnote * n/a
PFEESA Perfluoro(2-ethoxyethane)sulfonic acid (C4) 113507-82-7 Y N 3 (2.6)Footnote * n/a
PFHpS Perfluoroheptanesulfonic acid (C7) 375-92-8 Y N 3 (5.1)Footnote * n/a
4:2FTS 1H,1H, 2H, 2H-Perfluorohexane sulfonic acid (C4) 757124-72-4 Y N 3 (4.7)Footnote * n/a
PFMPA Perfluoro-3-methoxypropanoic acid (C4) 377-73-1 Y N 4 (3.8)Footnote * n/a
PFMBA Perfluoro-4-methoxybutanoic acid (C5) 863090-89-5 Y N 3 (3.7)Footnote * n/a
6:2FTS 1H,1H, 2H, 2H-Perfluorooctane sulfonic acid (C6) 27619-97-2 Y N 5 (14)Footnote * n/a
PFPeA Perfluoropentanoic acid (C5) 2706-90-3 Y N 3 (3.9)Footnote * n/a
PFPeS Perfluoropentanesulfonic acid (C5) 2706-91-4 Y N 4 (6.3)Footnote * n/a
PFTA Perfluorotetradecanoic acid (C14) 376-06-7 N Y 8 (1.1) 1.1
PFTrDA Perfluorotridecanoic acid (C13) 72629-94-8 N Y 7 (0.72) 0.72
NEtFOSAA N-ethyl perfluorooctanesulfonamidoacetic acid (C8) 2991-50-6 N Y 5 (2.8) 2.8
NMeFOSAA N-methyl perfluorooctanesulfonamidoacetic acid (C8) 2355-31-9 N Y 6 (2.4) 2.4
N
no
n/a
not available
PFAS
per - and polyfluoroalkyl substances
Y
yes.
Footnote a

MRL = Minimum reporting level (U.S. EPA, 2021b)

Return to footnote a referrer

Footnote b

DL = Detection limits (U.S. EPA, 2020)

Return to footnote b referrer

Footnote c

HFPO-DA and the ammonium salt of HFPO-DA are components of the GenX processing aid technology and both are measured as the anion of HFPO-DA by this method.

Return to footnote c referrer

Footnote *

LCMRL = Lowest concentration minimum reporting level (U.S. EPA, 2019)

Return to footnote * referrer

Adapted from U.S. EPA (2021b)

Appendix B: List of abbreviations

(Note that this list includes only PFAS that are not listed and spelled out in Appendix A)

AOF
adsorbable organic fluorine
AFFF
aqueous film-forming foams
AIX
anion exchange
ALARA
as low as reasonably achievable
FOSA or PFOSA
perfluorooctane sulfonamide
FHUEA
2H-perfluoro-2-octenoic acid
FOUEA
2H-perfluoro-2-decenoic acid
FTCA
fluorotelomer carboxylic acid
FTSA
fluorotelomer sulfonic acid
GAC
granular activated carbon
LC-MS/MS
liquid chromatography/tandem mass spectrometry
MDL
method detection limit
NF
nanofiltration
PAC
powdered activated carbon
PFAAs
perfluoroalkyl acids
PFAS
per- and polyfluoroalkyl substances
PFDS
perfluorodecane sulfonic acid
PFECHS
perfluoroethylcyclohexane sulfonic acid
PFEtS
perfluoroethane sulfonic acid
PFOSA or FOSA
perfluorooctane sulfonamide
PFPrS
perfluoropropane sulfonic acid
RO
reverse osmosis
SPE
solid-phase extraction
TOF
total organic fluorine
TOP
total oxidizable precursors
TRV
toxicological reference value
UCMR
Unregulated Contaminants Monitoring Rule
U.S. EPA
United States Environmental Protection Agency

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