Recovery of laboratory-added, isotopically labeled surrogate compounds from analyses of per- and polyfluoroalkyl substances in quality-control samples and in groundwater samples from the Great Miami buried-valley aquifer, southwestern Ohio, 2019–20

Publication Date

2023-03-09

Start Date

2019-06-27

End Date

2020-04-21

Buszka, P.M., Mathes, N.A., and Mailot, B.E., 2023, Per- and Polyfluoroalkyl Substance Concentrations, Age Estimates, Redox Categories, and Related Data for Groundwater from the Great Miami Buried-Valley Aquifer, Southwestern Ohio, 2019–20: U.S. Geological Survey data release, https://doi.org/10.5066/P9J7H3LB.

These data were collected to understand the recoveries of laboratory-added isotopically labeled surrogate compounds that were added to groundwater samples from 23 wells in the GM-BVA and to related quality-control samples to quality assure the reported concentrations of per- and polyfluoroalkyl substances (PFAS) in those samples. Understanding PFAS concentrations in groundwater was considered important because the GM-BVA is the sole source of water for public supply in many parts of southwestern Ohio and is vulnerable to contamination. This study addressed the ongoing need to characterize the presence of emerging contaminants throughout the GM-BVA, particularly PFAS. Concentrations of PFAS compounds in groundwater and quality-control samples were analyzed by methods 1 and 2 to understand the comparability of PFAS analytical results generated through different adaptations of the EPA 537.1 method. The groundwater sampling and analyses were done to inform the public and area stakeholders about concentrations of PFAS compounds in the GM-BVA.

• Ohio-Kentucky-Indiana Water Science Center

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