{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Shannon M Meppelink", "hasEmail": "mailto:smeppelink@usgs.gov"}, "description": "Samples were collected for a comparison method development study with the University of Minnesota and the U.S. Geological Survey (USGS) National Water Quality Laboratory (NWQL) in Lakewood, Colorado. Widely used liquid chromatography-tandem mass spectrometry (LC-MS/MS) methods fail to capture large fractions of total organofluorine in environmental samples confounding the assessment and remediation of fluorinated pollution. Fluorine nuclear magnetic resonance (19F-NMR) is an inclusive method for organofluorine analysis that preserves chemical information about chemical compound classes of organofluorine.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P14UDXGZ", "description": "Landing page for access to the data", "format": "XML", "mediaType": "application/http", "title": "Digital Data"}, {"@type": "dcat:Distribution", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.67f967ded4be022c3e84f598.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_67f967ded4be022c3e84f598", "keyword": ["PFAS", "USGS:67f967ded4be022c3e84f598", "biota", "environmental health", "organic constituents", "per- and polyfluoroalkyl substances", "surface water"], "modified": "2025-07-09T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-97.1191, 37.5097, -87.0117, 43.7711", "theme": ["geospatial"], "title": "Per- and Polyfluoroalkyl Substances (PFAS) results for varying industries, 2021-2022"}