The rate at which a pollutant is removed from the atmosphere either by reaction with
reactive transient species such as the
HO
radical,
O3, etc., by photodecomposition initiated by light absorption by the impurity, or by
loss at the surface of aerosols, the earth, etc. The decay rate as applied to
radioactive materials is related to the
radioactive half-life
(
)
of the particular isotopic species
A
and its concentration
![[A] t](../../mathml/D01541-1.png)
, at the given time
(
):![Rate = [A] t ln 2 t 1 2](../../mathml/D01541-3.png)
.
Source:
PAC, 1990, 62, 2167
(Glossary of atmospheric chemistry terms (Recommendations 1990))
on page 2183
Cite as:
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8.
https://doi.org/10.1351/goldbook.
