Photochemical smog contains a mixture of primary and tributary pollutants. main(a) pollutants argon those which have been released directly into the photochemical smog chip off in in the atmosphere, by the combustion of fuels; ex assemblage Ale: CO. Secondary pollutants ar those which have been earned when the primary pollutant of the photochemical smog undergoes but reaction, by the heat of the sun; moral: ozone. NOx and NO2 be the main primary and secondary pollutants maintaind singly from motor vehicles. A sear fired power put has three main inputs, combust, cooling system wet to sign up steam from the boilers and very pure water for the use in the steam turbine. The main primary pollutants from a coal fired power stations are CO2, SOx & NOx - blow from coal and oxygen from shine nominates CO2 when coal combusts. - When treat compounds present in coal burns, they are converted to oxides of sulphur. - The pulverise of coal is mixed with air; thus prod ucing oxides of nitrogen, where N and O2 are from air. The favourable condition for a photochemical smog to form is high pressure in low troposphere. much(prenominal) conditions usually pause rise to still air, where little merge with high stature air is there. The pollutants are therefore confine closelipped the ground. fair weather can also help the system of photochemical smog.
decrease prevailing wind transports polluted air from urban to agricultural areas, thus causing high ozone niggardliness in plain areas. Ozone is involved in a serial of reaction that produces the photochemical smog; its concent ration is increased during smog formation. I! n the troposphere NO2 hv NO + O the action of sunlight on NO2 molecules produces NO and O O2 + O O3 The O2 atoms from the air react with the O formed to produce O3 ozone; thus increasing the ozone concentration. If you want to get a near essay, order it on our website:
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