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Atmospheric Chemistry
hν, O
OCS
SO 4
2–
SO 4
2–
Several Steps
Stratosphere
Troposphere
hν + O 2
CS 2
SO 2
OH
OH
OCS
H 2 S
CH 3 SCH 3
Figure 5.13
The sulfur cycle in the atmosphere.
Phase Reactions
Aqueous-Phase Reactions
(liquid cloud drop)
SO 2
SO 2
HSO 3
–
SO 3
2–
O 3
O 3
hν + H 2 O
OH
OH
CO + O 2
HO 2
HO 2
HO 2
HO 2
H 2 O 2
H 2 O 2
Several Steps
SO 4
2–
Figure 5.14
The gas and liquid phase reactions of sulfur in the atmosphere.