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PFAS Analysis by U.S. EPA Method 1633A for Aqueous, Solid, Biosolids, and Tissue

03 Oct 2025

feature EVAR4286
  • Sample Matrix: aqueous, solid, biosolids, and tissue samples
  • Sample Preparation: WAX solid-phase extraction
  • Detection Technique: LC-MS/MS

Analysis of Per- and Polyfluoroalkyl Substances (PFAS) in Aqueous, Solid, Biosolids, and Tissue Samples by LC-MS/MS

U.S. EPA Method 1633A is used for the analysis of 40 PFAS in aqueous, solid, biosolids, and tissue samples. The analysis of bile acids TCDCA, TDCA, and TUDCA is also required. EPA Method 1633A combines solid-phase extraction sample preparation using weak anion exchange (WAX) cartridges with LC-MS/MS analysis on a C18 column. The method is performance based and allows modifications to be made to improve performance (e.g., to overcome interferences or improve sensitivity, accuracy, or precision), but only if all method performance criteria are met. The full analyte list and recommended products for PFAS analysis in aqueous, solid, biosolids, and tissue samples by Method 1633A are provided below. In addition, you can register and directly compare analyte lists and matrices across PFAS analysis methods here or visit www.restek.com/PFAS to explore our technical resources for PFAS analysis.

Analyte List for U.S. EPA Method 1633A for PFAS Analysis

PFAS acronyms, compound names, and CAS numbers vary across methods and guidelines, and they also depend on compound form (e.g., neutral vs. salt). The following list uses standardized terminology to allow easy comparison across the methods and guidelines in our comprehensive guide. Please refer to U.S. EPA Method 1633A for method-specific nomenclature. Note that the analysis of bile acids TCDCA, TDCA, and TUDCA is also required by this method.

AcronymCompound NameCAS#
NEtFOSAAN-ethyl perfluorooctanesulfonamidoacetic acid2991-50-6
NMeFOSAAN-methyl perfluorooctanesulfonamidoacetic acid2355-31-9
PFBSPerfluoro-1-butanesulfonic acid375-73-5
PFDAPerfluorodecanoic acid335-76-2
PFDoAPerfluorododecanoic acid307-55-1
PFHpAPerfluoroheptanoic acid375-85-9
PFHxSPerfluoro-1-hexanesulfonic acid355-46-4
PFHxAPerfluorohexanoic acid307-24-4
PFNAPerfluorononanoic acid375-95-1
PFOSPerfluorooctanesulfonic acid1763-23-1
PFOAPerfluorooctanoic acid335-67-1
PFTeDAPerfluorotetradecanoic acid376-06-7
PFTrDAPerfluorotridecanoic acid72629-94-8
PFUnAPerfluoroundecanoic acid2058-94-8
HFPO-DA, GenXHexafluoropropylene oxide dimer acid13252-13-6
PFBAPerfluorobutanoic acid375-22-4
PFPeAPerfluoropentanoic acid2706-90-3
PFDSPerfluoro-1-decanesulfonic acid335-77-3
PFHpSPerfluoro-1-heptanesulfonic acid375-92-8
PFPeSPerfluoro-1-pentanesulfonic acid2706-91-4
FOSAPerfluoro-1-octanesulfonamide754-91-6
4:2 FTS1H,1H,2H,2H-Perfluorohexane sulfonic acid757124-72-4
6:2 FTS1H,1H,2H,2H-Perfluorooctane sulfonic acid27619-97-2
8:2 FTS1H,1H,2H,2H-Perfluorodecane sulfonic acid39108-34-4
NMeFOSAN-Methylperfluorooctanesulfonamide31506-32-8
NEtFOSAN-ethylperfluorooctanesulfonamide4151-50-2
9Cl-PF3ONS9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (F-53B Major)756426-58-1
11Cl-PF3OUdS11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor)763051-92-9
ADONA4,8-Dioxa-3H-perfluorononanoic acid919005-14-4
PFNSPerfluoro-1-nonanesulfonic acid68259-12-1
PFEESAPerfluoro(2-ethoxyethane)sulfonic acid113507-82-7
NFDHANonafluoro-3,6-dioxaheptanoic acid151772-58-6
PFMPAPerfluoro-3-methoxypropanoic acid377-73-1
PFMBAPerfluoro-4-methoxybutanoic acid863090-89-5
NMeFOSE2-(N-methylperfluoro-1-octanesulfonamido)-ethanol24448-09-7
NEtFOSE2-(N-ethylperfluoro-1-octanesulfonamido)-ethanol1691-99-2
PFDoSPerfluorododecane sulfonate79780-39-5
3:3 FTCA3:3 Fluorotelomer carboxylic acid356-02-5
5:3 FTCA5:3 Fluorotelomer carboxylic acid914637-49-3
7:3 FTCA, FHpPA7:3 Fluorotelomer carboxylic acid or 3-perfluoroheptyl propanoic acid812-70-4

Recommended Products for U.S. EPA Method 1633A for PFAS Analysis

Analytical LC Columns:


Colonna HPLC Raptor C18, 2,7 µm, 50 x 2,1 mm
Colonna LC Force C18, 1,8 µm, 50 x 2,1 mm

Delay Columns:


PFAS Delay Column, 5 µm, 50 x 2,1 mm, colonna HPLC

PFAS delay column: 5 µm, 50 x 3.0 mm (cat.# 580959 [custom product])

Guard Columns:


Filtro precolonna UHPLC UltraShield, frit 0,2 µm, cad.
Holder EXP a connessione diretta per cartucce per precolonne EXP, comprende raccordo e ferrule
Cartuccia per precolonna Raptor C18 EXP, 2,7 µm, 5 x 2,1 mm, 3 pz.

Sample Prep:


Cartucce SPE Resprep S-DVB, 500mg/6ml, 30-pk.
Cartuccia SPE Resprep Polimerica, WAX, 6ml/500mg, 30μm, 30-conf.
Cartuccia SPE Resprep Polimerica, WAX, 6ml/200mg, 30μm, 30-pk.

Sample Reservoirs:


Provette vuote SPE, serbatoio per campioni, 75 mL, polipropilene, 12 pz.
Connettore SPE, 1, 3, 6, 10 o 15 mL, polipropilene, 15 pz.

Vacuum Manifolds:


Vacuum Manifold Resprep QR-24
Vacuum Manifold Resprep QR-12

Vacuum Pumps:


Pompa da vuoto in PTFE Chemker 300, 20 l/min, CA 110 V, 60 Hz
Pompa da vuoto in PTFE Chemker 300, 18 l/min, CA 220 V, 50 Hz

General Lab Supplies:


Vial a volume ridotto in polipropilene con filettatura, 9 mm, 700 µL, 12 x 32 mm, 100 pz.
Vial a volume ridotto in polipropilene con filettatura, 9 mm, 700 µL, 12 x 32 mm, 1000 pz.
Tappi in polietilene da 2,0 mL con top solido di 9 mm, filettatura, membrana spessore 10 mm, trasparente, 100 pz.
Tappi in polietilene da 2,0 mL con top solido di 9 mm, filettatura, membrana spessore 10 mm, trasparente, 1000 pz.
Provette da centrifuga vuote da 50 ml, Polipropilene con tappo, 50 provette, 50-conf.
Provette da centrifuga vuote da 50 ml, Polipropilene con tappo, 50 provette, 500-conf.
Siringa di Plastica Norm-Ject, Luer Lock Tip, graduazione fino a 12 mL, 10 mL, Conf. da 100
Siringa di Plastica Norm-Ject, Luer Lock Tip, graduazione fino a 6 mL, 5 mL, Conf. da 100

Discover More Solutions for PFAS Analysis!

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EVAR4286
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