Chapter 24: Air Pollution. A Brief History of Air Pollution. The atmosphere has long been a sink for waste disposal. Long history of recognition of the existence of atmospheric pollutants Natural photochemical smog recognized in 1550 Acid rain first described in 17 th century
Occurs primarily in summer and fall.
Occurs when cloud cover associated w/ stagnant air
Cl + O3 → ClO + O2
ClO + O → Cl + O2