Environmental Engineering Reference
In-Depth Information
Figure 6.1
Schematic representation of the formation of stratospheric ozone
shorter time than their anthropogenic
counterparts.
hydrogen, the hydroxyl radical (OH) and the
perhydroxyl radical (HO
2
)—all derived from
water vapour (H
2
O), methane (CH
4
) and
molecular hydrogen (H
2
), which occur naturally
in the stratosphere. They are referred to
collectively as odd hydrogen particles (Crutzen
Hydrogen oxides
Hydrogen oxides (HO
X
) include atomic
