What are the 2 types of smog?
Sulfurous smog and photochemical smog are two distinct types of smog recognised so far. Sulfurous smog, also known as London smog, develops due to high concentration of sulfur oxides in the air.
What are the three types of smog?
At least two distinct types of smog are recognized: sulfurous smog and photochemical smog. Sulfurous smog, which is also called “London smog,” results from a high concentration of sulfur oxides in the air and is caused by the use of sulfur-bearing fossil fuels, particularly coal.
What are the causes of smog?
Below are the main causes of smog.
- Using Coal as a Fuel.
- Vehicular and Industrial Emissions.
- Overpopulation & Excessive Consumption.
- Excessive Waste Production.
- Fireworks.
- Burning of Agricultural Material.
- Construction Activities.
- Natural Causes.
What is another name for photochemical smog?
Los Angeles smog
Photochemical smog, which is also known as “Los Angeles smog,” occurs most prominently in urban areas that have large numbers of automobiles. It requires neither smoke nor fog. This type of smog has its origin in the nitrogen oxides and hydrocarbon vapours emitted by automobiles…
What are the types of photochemical smog?
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.
Why is China full of smog?
“The smog is mainly caused by heavy industry in Shandong, Hebei and Henan provinces,” an expert with a state environment research institution said, requesting anonymity because he was not authorised to speak to overseas media.
What causes photochemical smog?
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. When sunlight hits these chemicals, they form airborne particles and ground-level ozone—or smog.
How is photochemical smog formed?
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.
Why is La prone to photochemical smog?
Most of the atmospheric pollutants in Los Angeles are primary pollutants caused by combustion of fuels in cars, trucks, and other vehicles. The nitrogen oxides are products of combustion. VOC’s result from the evaporation of fuel and chemical solvents. The chemical reactions that cause smog are photochemical reactions.
What causes the photochemical smog?
Photochemical smog is produced when sunlight reacts with nitrogen oxides and at least one volatile organic compound (VOC) in the atmosphere. When sunlight hits these chemicals, they form airborne particles and ground-level ozone—or smog.
