Photochemical Smog: Definition, Formation, Causes, & Effects
WEBFeb 2, 2023 · Photochemical smog, also known as ‘summer smog,’ is formed when ultraviolet (UV) light from the sun reacts with nitrogen oxides (NOx) and volatile organic compounds (VOCs). It is visible as a yellow-brown haze …
What Causes Smog? - Caltech Science Exchange
WEBParticulate matter is directly emitted during combustion, for example from fires or diesel engines. But it also forms in the atmosphere as a result of chemical reactions involving VOCs. Airborne particulate matter reduces visibility and is the reason smog appears brown.
16.5: Photochemical Smog - Chemistry LibreTexts
WEBSep 18, 2023 · Photochemical smog is formed when sunlight drives chemical reactions between primary pollutants from automobiles and normal atmospheric compounds. The product is a mix of over 100 different chemicals with …
What is Photochemical Smog? Formation and Causes with FAQs
WEBPhotochemical smog, also known as summer smog, is a type of smog that is produced when UV light originating from the sun interacts with the oxides of nitrogen present in the atmosphere.
Photochemical Smog - Chemistry LibreTexts
WEBMar 11, 2023 · Photochemical smog is a type of air pollution due to the reaction of solar radiation with airborne pollutant mixtures of nitrogen oxides (NOx) and volatile organic compounds (hydrocarbons). Smog is a byproduct of modern industrialization.
Smog - National Geographic Society
WEBOct 19, 2023 · Photochemical smog is produced when sunlight reacts with nitrogen oxides and at least one volatile organic compound (VOC) in the atmosphere. Nitrogen oxides come from car exhaust, coal power plants, and factory emissions. VOCs are released from gasoline, paints, and many cleaning solvents.
Photochemical Smog - an overview | ScienceDirect Topics
WEBPhotochemical smog is a brownish-gray haze caused by the action of solar ultraviolet radiation on atmosphere polluted with hydrocarbons and oxides of nitrogen. It contains anthropogenic air pollutants, mainly ozone, nitric acid, and organic compounds, which are trapped near the ground by temperature inversion.
10.11: Photochemical Smog - Chemistry LibreTexts
WEBFeb 27, 2021 · One of the most common urban air pollution problems is the production of photochemical smog. This condition occurs in dry, stagnant air masses, usually stabilized by a temperature inversion (see Figure 8.1), that are subjected to intense sunlight.
Photochemical smog - Energy Education
WEBPhotochemical smog is a type of smog produced when ultraviolet light from the sun reacts with nitrogen oxides in the atmosphere. It is visible as a brown haze, and is most prominent during the morning and afternoon, especially in densely populated, warm cities.
Smog | Description, Causes, Effects, & Types | Britannica
WEBSep 6, 2024 · Smog, community-wide polluted air. Although the term is derived from the words smoke and fog, it is often used to describe the pall of automotive or industrial origin that lies over many cities, and its composition is variable.
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