L1 /
9
CH3041
SMOG FORMATION
• The necessary components for smog are:
1) NOx 2) VOCs 3) sunlight
1) NOx 2) VOCs 3) sunlight
• Morning cars add
NO, VOCs & CO
NO, VOCs & CO
• Mid-morning heat
converts NO ® NO2
converts NO ® NO2
• Chain
reactions
involving NO2, NO &
OH. oxidise the VOCs
forming aldehydes and inceasing [O3].
involving NO2, NO &
OH. oxidise the VOCs
forming aldehydes and inceasing [O3].
• Afternoon car CO & NO removes products.
