Term: dose
https://doi.org/10.1351/goldbook.DT07361

Definition:
Energy or amount of photons absorbed per volume (or per mass) by an irradiated object during a particular exposure time. SI units are J m-3 or J g-1 and mol m-3 or mol g-1, respectively. Common units are einstein m-3 or einstein g-1, respectively.

Note: In medicine and in some other research areas (e.g., @P04648@ and water purification through @I03255@) dose is used in the sense of @ET06811@, i.e., the energy or amount of photons per surface area (or per volume) impinging upon an irradiated object during a particular exposure time. This use is not recommended. The terms @P04632@ and @R05042@ are preferred.

Related Terms:
1) uv dose (http://doi.org/10.1351/goldbook.U06582).
2) einstein (http://doi.org/10.1351/goldbook.E01914).
3) photopolymerization (http://doi.org/10.1351/goldbook.P04648).
4) irradiation (http://doi.org/10.1351/goldbook.I03255).
5) exposure (<em>in medicinal chemistry</em>) (http://doi.org/10.1351/goldbook.ET06811).
6) photon exposure (<em>in medicinal chemistry</em>) (http://doi.org/10.1351/goldbook.P04632).
7) radiant exposure (<em>in medicinal chemistry</em>) (http://doi.org/10.1351/goldbook.R05042).

Source: PAC, 2007, 79, 293. 'Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)' on page 326 (https://doi.org/10.1351/pac200779030293)

Citation: 'dose' 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.DT07361

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