Term: odour threshold
https://doi.org/10.1351/goldbook.O04279

Definition:
The concentration of a compound which produces an odour which is detectable by a human being (nose). For certain compounds this threshold is very low (e.g. 1 part in 10E9 for certain sulfides).

Related Terms:
1) sulfides (http://doi.org/10.1351/goldbook.S06102).

Source: PAC, 1990, 62, 2167. 'Glossary of atmospheric chemistry terms (Recommendations 1990)' on page 2204 (https://doi.org/10.1351/pac199062112167)

Citation: 'odour threshold' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.O04279

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