EPA Method 537

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Determination of Selected Perfluorinated Alkyl Acids in Drinking Water by Solid Phase Extraction and Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)

This method allows for the determination of perfluorinated alkyl acids (PFAAs) in drinking water.

Sample types

Water

Sample size

250 mL

Analytes

• N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)
• N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)
• Perfluorobutanesulfonic acid (PFBS)
• Perfluorodecanoic acid (PFDA)
• Perfluorododecanoic acid (PFDoA)
• Perfluoroheptanoic acid (PFHpA)
• Perfluorohexanesulfonic acid (PFHxS)
• Perfluorohexanoic acid (PFHxA)
• Perfluorononanoic acid (PFNA)
• Perfluorooctanesulfonic acid (PFOS)
• Perfluorooctanoic acid (PFOA)
• Perfluorotetradecanoic acid (PFTA)
• Perfluorotridecanoic acid (PFTrDA)
• Perfluoroundecanoic acid (PFUnA)