Tropospheric ozone and Photochemical smogs
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What causes a photochemical smog?
Chemical reactions of vehicle exhaust emissions and sunlight.
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What makes a photochemical smog more concentrated?
A temperature inversion
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How does tropospheric ozone form?
Nitrogen dioxide (primary pollutant) + UV-a → Nitrogen monoxide + Monatomic oxygen
O + O2 → O3 (secondary pollutant)
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How can we reduce photochemical smogs?
Catalytic converters reducing levels of nitrogen oxides
Reduce levels of hydrocarbons
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How can we reduce carbon monoxide?
Catalytic converters in cars
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