what are the products of photochemical smog?
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The major undesirable components of photochemical smog are nitrogen dioxide (NO2), ozone (O3), PAN (peroxyacetylnitrate), and chemical compounds that contain the –CHO group (aldehydes). PAN and aldehydes can cause eye irritation and plant damage if their concentrations are sufficiently high.
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Photochemical smog is a mixture of pollutants that are formed when nitrogen oxides and volatile organic compounds (VOCs) react to sunlight, creating a brown haze above cities.
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['water vapour, H 2O.', 'carbon dioxide, CO. ... ', 'methane, CH. ... ', 'nitrous oxide, N 2O.', 'CFCs (chlorofluorocarbons)']
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Several principal emissions result from coal combustion: Sulfur dioxide (SO2), which contributes to acid rain and respiratory illnesses. Nitrogen oxides (NOx), which contribute to smog and respiratory illnesses. Particulates, which contribute to smog, haze, and respiratory illnesses and lung disease.
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Photochemistry is the branch of chemistry concerned with the chemical effects of light. Generally, this term is used to describe a chemical reaction caused by absorption of ultraviolet (wavelength from 100 to 400 nm), visible light (400–750 nm) or infrared radiation (750–2500 nm).
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Photochemical ozone formation. Impact category that accounts for the formation of ozone at the ground level of the troposphere caused by photochemical oxidation of Volatile Organic Compounds (VOCs) and carbon monoxide (CO) in the presence of nitrogen oxides (NOx) and sunlight.
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What is photochemical smog? Photochemical smog is a mixture of pollutants that are formed when nitrogen oxides and volatile organic compounds (VOCs) react to sunlight, creating a brown haze above cities. It tends to occur more often in summer, because that is when we have the most sunlight.
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Primary pollutants are emitted directly from a source, such as emissions of sulfur dioxide from coal combustion. ... Photochemical smog, as found for example in Los Angeles, is a type of air pollution derived from vehicular emission from internal combustion engines and industrial fumes.
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The photochemical oxidants are secondary air pollutants formed by the action of sunlight on nitrogen oxides and reactive hydrocarbons, their precursors. The most important phytotoxic components produced by these atmospheric photochemical reactions are ozone and peroxyacetyl nitrate.
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['Ethylene Oxide.', 'Ozone.', 'Bleach.', 'Glutaraldehyde and Formaldehyde.', 'Phthalaldehyde.', 'Hydrogen Peroxide.', 'Peracetic Acid.', 'Silver.']
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Health Effects Photochemical smog is capable of inflicting irreversible damage on the lungs and heart. ... It causes painful irritation of the respiratory system, reduced lung function and difficulty breathing; this is more evident while exercising or working outdoors.
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['Carbon (soot)', 'Carbon monoxide.', 'Carbon dioxide.', 'Oxygen.', 'Water vapour.', 'Nitrogen.', 'Oxides of nitrogen (e.g., nitrogen oxide, nitrogen dioxide)', 'Oxides of sulphur (e.g., sulphur dioxide)']
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Secondary pollutants are pollutants which form in the atmosphere. These pollutants are not emitted directly from a source (like vehicles or power plants). ... Photochemical smog is made up of various secondary pollutants like ozone, peroxyacyl nitrates (PANs), and nitric acid (seen in Figure 2).
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['Parabens. ... ', 'Artificial Fragrance/Parfum. ... ', 'Sodium Lauryl Sulfate and Sodium Laureth Sulfate. ... ', 'Toluene. ... ', 'Phthalates. ... ', 'Polyethylene Glycol (PEG) ... ', 'Formaldehyde. ... ', 'Oxybenzone (and other chemical sunscreens)']
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['Thermal decomposition reactions;', 'Elctrolytic decomposition reactions;', 'Photo decomposition reactions.']
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Transportation is also linked with the emission of air pollutants such as carbon monoxide, nitrogen oxide, sulphur oxides, volatile organic compounds and particulate matter. These pollutants contribute to the formation of smog and poor air quality.
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['Acetone peroxide.', 'Alkali metal ozonides.', 'Ammonium permanganate.', 'Ammonium chlorate.', 'Azidotetrazolates.', 'Azoclathrates.', 'Benzoyl peroxide.', 'Benzvalene.']