Electron capture detector

{
  "id": "MLC-T-CHM-003712",
  "term": "Electron capture detector",
  "field": "Chemistry",
  "definition": "A gas chromatography detector that selectively responds to compounds with high electron affinity, such as halogenated organic compounds. It operates by ionizing a carrier gas with a radioactive source, creating a steady current of electrons. When an electron-capturing analyte passes through, it reduces this current, which is then measured.",
  "subject": "Chemistry and the Environment",
  "see_also": [
    "carrier gas",
    "radioactive source"
  ],
  "references": [
    "PAC, 1990, 62, 2167. 'Glossary of atmospheric chemistry terms (Recommendations 1990)' on page 2191 (https://doi.org/10.1351/pac199062112167)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/electron-capture-detector/"
}