{
  "accessLevel": "public",
  "bureauCode": [
    "010:12"
  ],
  "contactPoint": {
    "@type": "vcard:Contact",
    "fn": "Sara E Peek",
    "hasEmail": "mailto:speek@usgs.gov"
  },
  "description": "Samples for water chemistry analysis were filtered to 0.45 µm upon collection. Since the solute-rich samples continued to form precipitates, samples were filtered again immediately prior to analysis if needed. All samples were very rich in solutes and were analyzed at multiple dilutions (1:100 to 1:1000) to match instrument measurement ranges for various analytes. Water chemistry analyses were performed at the U.S. Geological Survey laboratories in Menlo Park, California.\nThe concentrations of fluoride (F-), chloride (Cl-), sulfate (SO42-), and bromide (Br-) in samples were determined by ion chromatography with a Dionex ICS-2000, using a 250 mm Dionex IonPac AS18 column. \nThe concentrations of major cations were determined via inductively coupled plasma-optical emission spectrometry (ICP-OES) using a ThermoScientific ICAP 6500 Duo. A mixed-element standard (produced to spec by High-Purity Standards Inc.) was run at a range of dilutions to calibrate the instrument. \nAdditional cation concentrations, including heavier trace elements, were determined by inductively coupled plasma mass spectrometry (ICPMS, NExION 300Q, Perkin Elmer) using a method adapted from Garbarino and Taylor (1996). External standards, serially diluted from ultrapure, single-element stock, were used to create calibration curves.\nReferences:\nGarbarino, J.R. and Taylor, H.E., 1996. Inductively coupled plasma-mass spectrometric method for the determination of dissolved trace elements in natural water. Washington, DC: US Geological Survey. USGS OFR 94-358, 49 p. https://doi.org/10.3133/ofr94358",
  "distribution": [
    {
      "@type": "dcat:Distribution",
      "accessURL": "https://doi.org/10.5066/P99H412X",
      "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.61402173d34e1449c5d3853a.xml",
      "format": "XML",
      "mediaType": "text/xml",
      "title": "Original Metadata"
    }
  ],
  "identifier": "http://datainventory.doi.gov/id/dataset/USGS_61402173d34e1449c5d3853a",
  "keyword": [
    "Hawai'i",
    "Kilauea",
    "USGS:61402173d34e1449c5d3853a",
    "geoscientificInformation",
    "sulfur isotopes",
    "water chemistry"
  ],
  "modified": "2023-03-30T00:00:00Z",
  "publisher": {
    "@type": "org:Organization",
    "name": "U.S. Geological Survey"
  },
  "spatial": "-155.29700, 19.39400, -155.26400, 19.42000",
  "theme": [
    "geospatial"
  ],
  "title": "Chemical and isotopic composition of gas, water, and solids from the 2019-2020 water lake in Halema’uma’u Crater, Kīlauea Volcano, Hawaii: Water Chemistry"
}