Exposure Assessment Tools by Approaches

Exposure assessment is one of the four major steps in risk assessment. Others include hazard identification, dose-response assessment, and risk characterization.

Exposure Assessment

Exposure assessment is "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, routes, pathways, and uncertainty in the assessment."

- See IPCS, 2004 Glossary of Key Exposure Assessment Terminology (PDF)(122 pp, 951 K, About PDF) developed by the International Programme on Chemical Safety

Exposure may be estimated using one of three approaches:

Direct Measurement

Direct Measurement

See information and tools related to direct measurement (Point-of-Contact) or personal monitoring

Indirect Estimation

Indirect Estimation

See information and tools related to indirect estimation or scenario evaluation

Exposure Reconstruction

Expo Reconstruction

See information and tools related to exposure reconstruction or biomonitoring and reverse dosimetry

EPA ExpoBox

Contact Us about ExpoBox
Contact Us about ExpoBox to ask a question, provide feedback, or report a problem.
Last updated on May 12, 2025