Impingement

{
  "id": "MLC-T-CHM-005727",
  "term": "Impingement",
  "field": "Chemistry",
  "definition": "The process where gas or liquid containing suspended particles is directed at high velocity against a surface, causing the particles to be collected. This method is used to capture airborne contaminants by forcing them to collide with a liquid or solid medium. It is a common technique in air pollution sampling for collecting particulate matter.",
  "subject": "Chemistry and the Environment",
  "see_also": [
    "impaction"
  ],
  "references": [
    "PAC, 1990, 62, 2167. 'Glossary of atmospheric chemistry terms (Recommendations 1990)' on page 2196 (https://doi.org/10.1351/pac199062112167)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/impingement/"
}