purge and trap (device)

{
  "id": "MLC-T-ENV-022808",
  "term": "purge and trap (device)",
  "field": "Environment",
  "definition": "Analytical technique (device) used to isolate volatile (purgeable) organics by stripping the compounds from water or soil with a stream of inert gas, trapping the compounds on an adsorbent such as a porous polymer trap, and thermally desorbing the trapped compounds into the gas chromatographic column.",
  "subject": "Land, waste and cleanup",
  "references": [
    "Underground Storage Tank Sites Guide Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/purge-and-trap-device/"
}