Title: time-weighted-average-exposure
Long Title: IUPAC Gold Book - time-weighted-average-exposure
DOI: 10.1351/goldbook.16143
Status: current

Definition
Concentration in the exposure medium at each measured time interval multiplied by that time interval and divided by the total time of observation.

Note
For occupational exposure, a working shift of \(\pu{8\!\mbox{-}h}\) is commonly used as the averaging time.

Source
- PAC, 2007, 79, 1153. 'Glossary of terms used in toxicology, 2nd edition (IUPAC Recommendations 2007)' on page 1322 (https://doi.org/10.1351/pac200779071153)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/16143/html
- json: https://goldbook.iupac.org/terms/view/16143/json
- xml: https://goldbook.iupac.org/terms/view/16143/xml

Citation: Citation: 'time-weighted-average-exposure' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.16143
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Accessed: 2026-04-17T23:54:33+00:00