Photochemical smog is a major type of air pollution observed in urban areas with high motor vehicle traffic. Which of the following statements regarding the formation, precursors, and components of photochemical smog are correct?
- Nitrogen oxides () and volatile organic compounds () act as primary precursor pollutants in its formation.Cevap
- Bright sunlight and high atmospheric temperatures accelerate the chemical reactions that generate photochemical smog.Cevap
- Ground-level ozone () and peroxyacetyl nitrate () are major secondary pollutants formed during the photochemical process.Cevap
- DSulfur dioxide () emissions reacting with water vapor in cold, humid winter conditions are the primary drivers of photochemical smog.
Cevap
Photochemical smog formation requires nitrogen oxides () and volatile organic compounds () as primary precursors, is accelerated by bright sunlight and warm temperatures, and produces secondary pollutants such as ground-level ozone () and peroxyacetyl nitrate ().
Photochemical smog is an oxidizing smog formed by the action of ultraviolet light on atmospheres containing hydrocarbons and nitrogen oxides (). The primary reaction components are and volatile organic compounds (). Solar energy fuels the reaction pathways, leading to the formation of toxic secondary pollutants including tropospheric ozone (), peroxyacetyl nitrate (), and aldehydes.
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Anahtar Kavram
Precursors, Environmental Factors, and Secondary Pollutants of Photochemical Smog