Exposure assessment

{
  "id": "MLC-T-ENV-010466",
  "term": "Exposure assessment",
  "field": "Environment",
  "term_source": "Exposure Assessment",
  "definition": "1. The process of finding out how people come into contact with a hazardous substance, how often and for how long they are in contact with the substance, and how much of the substance they are in contact with.\n\n2. An identification and evaluation of the human population exposed to a toxic agent, describing its composition and size, as well as the type, magnitude, frequency, route and duration of exposure.\n\n3. The determination or estimation (qualitative or quantitative) of the magnitude, frequency, duration, route, and extent (number of people) of exposure to a chemical.\n\n4. Exposure assessment examines what is known about the frequency, timing, and levels of contact with a stressor.\n\n5. Identifying the pathways by which toxicants may reach individuals, estimating how much of a chemical an individual is likely to be exposed to, and estimating the number likely to be exposed.\n\n6. The process of estimating or measuring the magnitude, frequency, and duration of exposure to an agent, along with the number and characteristics of the population exposed.\n\n7. Measurement or estimation of the magnitude, frequency, duration, and route of exposure of humans, animals, materials, or ecological components to substances in the environment. The assessment also describes the size and nature of the exposed population.\n\n8. The determination or estimation (qualitative or quantitative) of the magnitude, frequency, or duration, and route or exposure.\n\n9. An identification and evaluation of a population exposed to a toxic agent, describing its composition and size, as well as the type, magnitude, frequency, route, and duration of exposure.\n\n10. The qualitative and/or quantitative evaluation of the likely intake of biological, chemical, and physical agents via food as well as exposures from other sources if relevant.\n\n11. A component of a risk assessment that characterizes the source and magnitude of human exposure to the hazard.\n\n12. The process of measuring or estimating the intensity, frequency, and duration of human exposures to an agent currently present in the environment or of estimating hypothetical exposures that might arise from the release of new chemicals into the environment.\n\n13. A process that estimates the amount of a chemical that enters or comes into contact with people. An exposure assessment also describes the length of time and the nature and size of a population exposed to a chemical.\n\n14. Exposure assessment is the determination of the amount, duration, and frequency of an actual or hypothetical exposure of people, organisms, or the environment to a substance or an activity that can affect health, the environment, or the ecosystem. Exposure assessments specify the population that might be exposed, identifies the routes through which exposure can occur, and estimates the magnitude, duration, and timing of the doses that people might receive as a result of their exposure.\n\n15. The process of estimating or measuring the magnitude, frequency, and duration of exposure to an agent, along with the number and characteristics of the population exposed. Ideally, it describes the sources, pathways, routes, and the uncertainties in the assessment.\n\n16. The qualitative or quantitative determination or estimation of the magnitude, frequency, duration, and rate of exposure of an individual or population to a chemical.\n\n17. The qualitative or quantitative estimate (or measurement) of the magnitude, frequency, duration, and route of exposure. A process that integrates information on chemical fate and transport, environmental measurements, human behavior, and human physiology to estimate the average doses of chemicals received by individual receptors. For simplicity in this guidance, exposure encompasses concepts of absorbed dose (i.e., uptake and bioavailability).\n\n18. A process that estimates the amount of a chemical that enters or comes into contact with people. An exposure assessment also describes the length of time and the nature and size of a population exposed to a chemical. [NYDOH 1999][\n\n19. Identifying the ways in which chemicals might reach individuals (e.g., by breathing); estimating how much of a chemical an individual is likely to be exposed to; and, estimating the number of individuals likely to be exposed.\n\n20. An exposure assessment is part of an air toxics risk assessment such as NATA. The assessment determines (or estimates): how a person may be exposed to chemicals (for example, by breathing); how much of a chemical to which a person is likely to be exposed; how long and/or how often they will be exposed; and how many people are likely to be exposed.\n\n21. An exposure assessment is part of an air toxics risk assessment such as AirToxScreen. The assessment determines (or estimates): how a person may be exposed to chemicals (for example, by breathing); how much of a chemical to which a person is likely to be exposed; how long and/or how often they will be exposed; and how many people are likely to be exposed.",
  "subject": "Health and safety",
  "references": [
    "The Agency for Toxic Substances and Disease Registry (ATSDR); ATSDR 2004; CDC Agency for Toxic Substances and Disease Registry Glossary; Thesaurus of Terms Used in Microbial Risk Assessment",
    "Integrated Risk Information System (IRIS) Glossary; Community-Based Air Pollution Projects Glossary",
    "Drinking Water Technical & Legal Terms",
    "Risk Assessment Glossary",
    "Terms of Environment; EPA 2005b; Thesaurus of Terms Used in Microbial Risk Assessment",
    "Exposure Factors Handbook: Glossary",
    "I-BEAM Glossary of Terms",
    "EPA 1997a; Thesaurus of Terms Used in Microbial Risk Assessment",
    "EPA 2003, 2004; Thesaurus of Terms Used in Microbial Risk Assessment",
    "CAC 1999, CAC 2003, FAO/WHO 2003b; Thesaurus of Terms Used in Microbial Risk Assessment",
    "FDA 2002",
    "MERREA 2005, RAIS 2004, SRA 2004",
    "NYDOH 1999",
    "NYS 1998; Thesaurus of Terms Used in Microbial Risk Assessment",
    "IPCS 2004; Thesaurus of Terms Used in Microbial Risk Assessment",
    "EPA General Principles For Performing Aggregate Exposure And Risk Assessments: Glossary at http://www.epa.gov/oppfead1/trac/science/aggregate.pdf",
    "EPA Definitions of Terms Relevant to PRA and References for Further Reading at http://www.epa.gov/oswer/riskassessment/rags3adt/pdf/appendixe.pdf",
    "Thesaurus of Terms Used in Microbial Risk Assessment",
    "National Air Toxics Assessment (NATA) Glossary",
    "AirToxScreen Glossary of Terms"
  ],
  "url": "https://mlchart.com/terminology/environment/exposure-assessment/"
}