Exposure duration

{
  "id": "MLC-T-ENV-010476",
  "term": "Exposure duration",
  "field": "Environment",
  "definition": "1. Length of time over which contact with the contaminant lasts.\n\n2. The total time an individual is exposed to the chemical being evaluated or the length of time over which contact with the contaminant lasts.\n\n3. The length of time over which continuous or intermittent contacts occur between an agent and a target. For example, if an individual is in contact with an agent for 10 min per day for 300 days over a 1-year time period, the exposure duration is 1 year. [IPCS 2004]\n\n4. Total time an individual is exposed to the chemical being evaluated.\n\n5. The total time an individual is exposed to the chemical being evaluated or the length of time over which contact with the contaminant lasts. [EPA 2004]\n\n6. Toxicologically, there are three categories describing duration of exposure: acute (one-time), subchronic (repeated, for a fraction of a lifetime), and chronic (repeated, for nearly a lifetime). [REAP 1995]\n\n7. The time period over which exposure is averaged (i.e., the averaging period) to limit the time of exposure to elevated [nutrient] concentrations.",
  "abbreviation": "TSFE",
  "synonyms": [
    "ED"
  ],
  "subject": "Health and safety",
  "references": [
    "Exposure Factors Handbook: Glossary; EPA Exposure Factors Handbook: Glossary",
    "EPA 2004",
    "Thesaurus of Terms Used in Microbial Risk Assessment",
    "EPA Exposure Factors Handbook: Glossary",
    "NSTEPS Online Glossary of Terms"
  ],
  "url": "https://mlchart.com/terminology/environment/exposure-duration/"
}