Atmospheric pollution caused by coal-fired power stations and motor vehicle engines.
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Atmospheric Pollution Caused by Coal-Fired Power Stations and Motor Vehicle Engines Photochemical smog is a mixture of chemicals which form in the troposphere region of the atmosphere. This smog consists of two groups of chemicals known as primary pollutants and secondary pollutants. (fig 1) As fig 1 shows primary pollutants being produced from various sources, the main producers of primary pollutants are motor vehicles and coal fired power plants. These produce many pollutants such as Nox, VOCs and CO These primary pollutants react when given the correct conditions to form the secondary pollutants such as O3, NO2, H2O2, HNO3 and oxides of the VOCs. Many of the primary pollutants formed in a coal fired power plant these are listed below: * Nox - formed at high temperature and pressure of the combustion causes the atmospheric nitrogen and oxygen to react. * VOCs (Volatile Organic Compounds) - produced when unburnt hydrocarbons are released through the chimney of...


