TY - RPRT TI - Determination of per- and polyfluoroalkyl substances in water by direct injection of matrix-modified centrifuge supernatant and liquid chromatography/tandem mass spectrometry with isotope dilution AU - James L. Gray AU - Leslie K. Kanagy AU - Christopher J. Kanagy AU - Cyrissa A. Anderson PY - 2025 DO - 10.3133/tm5b13 UR - https://pubs.usgs.gov/publication/tm5B13 ID - tm5B13 ER -