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Photochemical smog is produced by the action of the sums rays on primary and secondary pollutants in the lower atmosphere, the troposphere.
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Chemistry Open Book Paper Photochemical smog is produced by the action of the sums rays on primary and secondary pollutants in the lower atmosphere, the troposphere. Primary pollutants are chemicals which are emitted directly into the atmosphere by combustion of fuels. The main primary pollutants in the atmosphere consist of NOx and VOCs(mainly unburnt hydrocarbons), as well as CO. Secondary pollutants occur by chemical and photochemical reactions of primary pollutants after they have been admitted to the atmosphere by the aid sunlight. Secondary pollutants consist of ozone, peroxyacetyle nitrate, H2O2 and partially oxidised Hydrocarbons and HNO3. The main primary pollutants produced as a result of motor vehicles are NO2, NO, unburnt hydrocarbons and CO. The main secondary pollutant produced as a result of motor vehicles is NO2 as well as some unburnt hydrocarbons. The main primary pollutants formed in the combustion of coal from a power station are NOx. There are two main...
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