dose

https://doi.org/10.1351/goldbook.DT07361
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.
See also: UV dose, einstein
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)
This definition replaces an earlier definition of dose.