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AOSC200Lect26 - AOSC 200 Lesson 26 Photochemical SMOG Ozone...

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AOSC 200 Lesson 26
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Photochemical SMOG Radical Hydroxyl the as known is 2 : vapor er with wat reacts atom oxygen excited Then the : oxygen of atom excited an give o sunlight t with reacts Ozone 2 * 2 * 3 OH OH O H O O O h O = + + = + ν
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SMOG Chemistry M O M O O O NO h NO NO O H C NO O H C O H C O H C H C O H H C OH H C + + + + + + + + + + 3 2 2 2 5 2 2 5 2 2 5 2 2 5 2 5 2 2 5 2 6 2 : by followed sunlight by apart broken then is dioxide nitrogen The DIOXIDE; NITROGEN form to OXIDE NITRIC with reacts en oxidant th This : OXIDANT an produce to OXYGEN MOLECULAR with combines then (Ethane) ns hydrocarbo from ATOM HYDROGEN a strip can OH ν
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Schematic of ozone production from a Volatile Organic Compound (VOC)
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SMOG NEEDS Hydrocarbons and nitrogen oxides Strong sunlight to start reactions Warm temperatures to maintain reactions the higher the temperature the faster the rate. Peak ozone will be when temperature is highest in the afternoon.
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Overall scheme for air pollution
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Haze Haze is a subset of PM and is primarily composed of sulfur and nitrogen compounds . Particles of a certain size can reflect or refract light , causing a reduction in visibility. This reduction in visibility is known as haze.
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