Definitions for "EXPOSURE ASSESSMENT"
Related Terms:
Exposure scenario, Emeg, Reference concentration, Biological monitoring, Comparison value, Exposure pathway, Reference dose, Ecological risk assessment, Risk assessment, Risk characterization, Health risk assessment, Hazard identification, Baseline risk assessment, Hazard assessment, Environmental risk, Endpoint , Noec, Loec, Minimal risk level, Environmental monitoring, Noael, Lowest observed adverse effect level, Background level, Dose-response assessment, No observed adverse effect level, Lethal concentration 50, Loael, Exposure, Critical load, Rfd, Uncertainty factor, Noel, Ambient monitoring, Ec50, Exposure, Exposure, Integrated pest management, Vulnerability assessment, Acceptable daily intake, Toxicity test, Threshold limit value, Lc50, Dose-response relationship, Slope factor, Hazard quotient, Vulnerability, Exposure pathways, Exposure limits, Ael
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.
A component of a risk assessment that characterizes the source and magnitude of human exposure to the hazard.
Determination of the sources, environmental transport and modification, and fate of pollutants and contaminants, including the conditions under which people or other target species, could be exposed and the doses that could result in adverse effects.
Estimate of the prevalence and levels of microbial contamination of the food product at the time of consumption and the amount of the product consumed at each meal by different categories of consumers.
The exposure assessment is the determination of the emissions in order to estimate the concentrations/doses of a substance to which human populations or environmental spheres (water, soil and air) are or may be exposed.
A process that takes into account the chemical and physical properties of the substance, the effect the substance produces, the exposure frequency and duration, and the affected subject.
The process to estimate radiation and chemical exposures.
Process of measuring or estimating concentration, duration and frequency of exposures to pesticide present in environment or, if estimating hypothetical exposures, that might arise from the release of the pesticide into the environment. See also risk assessment. (after Duffus, 1993)
Estimates the amount of a substance something is exposed to.
The process of describing the biological pathway(s) necessary for exposure of humans and aquatic and terrestrial animals in the importing country to the hazards and estimating the likelihood of the exposure(s) occurring, and of the spread or establishment of the hazard. (modified from OIE 2003a)
The qualitative and/or quantitative evaluation of the likely intake of biological, chemical and physical agents via food, as well as exposure from other sources if relevant (MRA). [1
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. ( The process of estimating or measuring the intensity, frequency, and duration of exposure to an agent. Ideally, it describes the sources, pathways, routes, magnitude, duration, and pattern of exposure; the haracteristics of the populations exposed; and the uncertainties in the assessment.)
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 SOURCE s, pathways, routes, and the uncertainties in the assessment.
The process of finding the ways people come in contact with chemicals, how often and how long they come in contact with chemicals, and the amounts of chemicals with which they come in contact.
the goals of the exposure evaluation step of a risk assessment are to analyze contaminant releases; to identify exposed populations; to identify potential exposure pathways; and to estimate exposure concentrations and contaminant intakes for each pathway. [Source: Risk Assessment Guidance for Superfund: Volume I -- Human Health Evaluation Manual ( Part A). Interim Final. U.S. Environmental Protection Agency. Office of Emergency and Remedial Response. EPA/540/1-89/002, Section 1.1.2, Exhibit 1-2
A process that estimates the amount of a chemical that enters or comes into contact with people or animals. An exposure assessment also describes how often and for how long an exposure occurred, and the nature and size of a population exposed to a chemical.
determines the nature and magnitude of the exposure in humans. It estimates the amount of a substance that will be available within the body to cause a toxic effect.
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.
Process of measuring or estimating concentration (or intensity), duration and frequency of exposures to an agent present in the environment or, if estimating hypothetical exposures, that might arise from the release of a substance, or radionuclide, into the environment RT risk assessment
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 of individuals likely to be exposed.
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.
The determination or estimation (qualitative or quantitative) of the magnitude, frequency, duration, route, and extent (number of people) of exposure to a chemical.
Identifying the pathways by which toxicants may reach individuals, estimating how much of a chemical various individuals are likely to be exposed to, and estimating the number likely to be exposed at each level.
Exposure assessment is a branch of environmental science that focuses on the processes that take place at the interface between the environment containing the contaminant(s) of interest and the organism(s) being considered. These are the final steps in the path to release an environmental contaminant, through transport to its effect in a biological system. It tries to measure how much of a contaminant can be absorbed by an exposed target organism, in what form, at what rate and how much of the absorbed amount is actually available to produce a biological effect.