Exposure

{
  "id": "MLC-T-CHM-004241",
  "term": "Exposure",
  "field": "Chemistry",
  "definition": "The contact of an organism with a chemical, physical, or biological agent, quantified by the amount of the agent at the boundary of the organism. In toxicology and toxicokinetics, it is defined as the concentration of a substance in a medium multiplied by the duration of contact. For ionizing radiation, exposure is a measure of the ionization produced in air by photons, with the historical unit being the roentgen (R).",
  "subject": "Analytical Chemistry",
  "see_also": [
    "X-radiation",
    "electron",
    "γ-radiation",
    "ion",
    "photon",
    "micro"
  ],
  "references": [
    "PAC, 1982, 54, 1533. 'Glossary of terms used in nuclear analytical chemistry (Provisional)' on page 1541 (https://doi.org/10.1351/pac198254081533)",
    "PAC, 2004, 76, 1033. 'Glossary of terms used in toxicokinetics (IUPAC Recommendations 2003)' on page 1051 (https://doi.org/10.1351/pac200476051033)",
    "PAC, 2007, 79, 293. 'Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)' on page 338 (https://doi.org/10.1351/pac200779030293)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/exposure/"
}