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An Interlaboratory Study on EPA methods 537.1 and 533 for Per- and Polyfluoroalkyl Substance Analyses
The main purpose of this interlaboratory study was to evaluate the performance of EPA methods 537.1 and 533 for analysis of PFAS in drinking water for use with both potable and nonpotable waters. The obtained matrix spike recoveries indicate that both methods are generally applicable for analysis of PFAS in pristine nonpotable water matrices, however, with a notable challenge for effectively extracting long-chain PFAS from some nonpotable water matrices. Another challenge associated with EPA method 533 is the impacts likely caused by co-extracted common inorganic anions on those PFAS that do not have their own isotopically labeled analogues available. The experimental results indicate that these challenges can be successfully resolved or reduced by enhancing postextraction bottle rinsing and elution procedures.
Authors: Yongtao Li, Charles Neslund, Marnellie Ramos, et al | © 2021 American Water Works Association. Content Publication: AWWA Water Science. Publisher: John Wiley and Sons. Used by permission under License Number 5331441212528, July 17, 2022.
An Interlaboratory Study on EPA methods 537.1 and 533 for Per- and Polyfluoroalkyl Substance Analyses
The main purpose of this interlaboratory study was to evaluate the performance of EPA methods 537.1 and 533 for analysis of PFAS in drinking water for use with both potable and nonpotable waters. The obtained matrix spike recoveries indicate that both methods are generally applicable for analysis of PFAS in pristine nonpotable water matrices, however, with a notable challenge for effectively extracting long-chain PFAS from some nonpotable water matrices. Another challenge associated with EPA method 533 is the impacts likely caused by co-extracted common inorganic anions on those PFAS that do not have their own isotopically labeled analogues available. The experimental results indicate that these challenges can be successfully resolved or reduced by enhancing postextraction bottle rinsing and elution procedures.
Authors: Yongtao Li, Charles Neslund, Marnellie Ramos, et al | © 2021 American Water Works Association. Content Publication: AWWA Water Science. Publisher: John Wiley and Sons. Used by permission under License Number 5331441212528, July 17, 2022.
Document Type:
Technical Notes
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Reversed Phase
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