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Temporal Variability of PFAS Precursors in Wastewater
Citation:
Van Buren, J., M. Modiri, P. Sasi, B. Crone, P. Potter, A. Doroshow, Jim Voit, AND M. Mills. Temporal Variability of PFAS Precursors in Wastewater. Presented at Society of Environmental Toxicology & Chemistry (SETAC) North America annual meeting 2023, Louisville, KY, November 13 - 16, 2023.
Impact/Purpose:
Assessing the fate of PFAS in the environment requires improved analytical methodologies to quantify a greater variety of PFAS and application of these methods to investigate their occurrence in complex sample matrices. PFAS precursors are a compound class of emerging concern that are capable of undergoing reaction under environmentally-relevant conditions to transform into per-fluorinated alkyl acids (PFAAs). Most PFAS precursors are not included on the compound lists of common targeted analysis methods and require either amended targeted compound lists, non-targeted analysis via high resolution mass spectrometry, or the Total Oxidizable Precursor (TOP) assay (which does not yield full characterization of the individual precursors). This research includes both method development for PFAS precursor analysis and application of various analytical methods to wastewater samples to assess precursor content.
Description:
Assessing the fate of PFAS in the environment requires improved analytical methodologies to quantify a greater variety of PFAS and application of these methods to investigate their occurrence in complex sample matrices. PFAS precursors are a compound class of emerging concern that are capable of undergoing reaction under environmentally-relevant conditions to transform into per-fluorinated alkyl acids (PFAAs). Most PFAS precursors are not included on the compound lists of common targeted analysis methods and require either amended targeted compound lists, non-targeted analysis via high resolution mass spectrometry, or the Total Oxidizable Precursor (TOP) assay (which does not yield full characterization of the individual precursors). This research includes both method development for PFAS precursor analysis and application of various analytical methods to wastewater samples to assess precursor content.