Absorbed Dose

{
  "id": "MLC-T-ENV-000157",
  "term": "Absorbed Dose",
  "field": "Environment",
  "definition": "1. The amount of a substance penetrating the exchange boundaries of an organism after contact. Absorbed dose for the inhalation and ingestion routes of exposure is calculated from the intake and the absorption efficiency. Absorbed dose for dermal contact depends on the surface area exposed and absorption efficiency.\n\n2. The amount of a chemical that enters the body of an exposed organism.\n\n3. In exposure assessment, the amount of a substance that penetrates an exposed organism's absorption barriers (e.g. skin, lung tissue, gastrointestinal tract) through physical or biological processes. The term is synonymous with internal dose.\n\n4. The amount of an agent that enters a target by crossing an exposure surface that acts as an absorption barrier. See also Absorption barrier, Dose, and Internal dose.\n\n5. The amount of energy deposited per unit mass by radiation. The SI unit for absorbed dose is joule per kilogram (J/kg), and its special name is gray (Gy).\n\n6. The amount of a substance penetrating across an absorption barrier (the exchange boundaries) of an organism, via either physical or biological processes. Sometimes called internal dose.\n\n7. The amount crossing a specific absorption barrier (e.g., the exchange boundaries of skin, lung, and digestive tract) through uptake processes.",
  "subject": "Health and safety",
  "references": [
    "Waste and Cleanup Risk Assessment Glossary",
    "Drinking Water Technical & Legal Terms",
    "Terms of Environment",
    "Exposure Factors Handbook: Glossary",
    "Radiation Protection Radiation Glossary",
    "EPA 1992",
    "EPA 2005b"
  ],
  "url": "https://mlchart.com/terminology/environment/absorbed-dose/"
}