What are the two 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.

Smog. Smog is a kind of air pollution, originally named for the mixture of smoke and fog in the air. Classic smog results from large amounts of coal burning in an area and is caused by a mixture of smoke and sulfur dioxide.

Furthermore, how is smog created? 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.

Accordingly, what is smog pollution?

Smog is a yellowish or blackish fog formed mainly by a mixture of pollutants in the atmosphere which consists of fine particles and ground-level ozone. Smog which occurs mainly because of air pollution can also be defined as a mixture of various gases with dust and water vapor.

What is smog PDF?

Smog is formed when pollutants like nitrogen oxide, carbon monoxide and volatile organic compounds that are released from automobiles, industries and burning of fossil fuels interact with sunlight.

How is smog dangerous?

Overall, smog is harmful to both the respiratory (lungs) and cardiovascular (heart) systems. It aggravates heart problems, bronchitis, asthma, and other lung problems. Smog reduces lung function even in healthy people. Even at low levels, ground level ozone and fine particulate matter are harmful.

Why is smog bad?

Smog can cause or aggravate health problems such as asthma, emphysema, chronic bronchitis and other respiratory problems as well as eye irritation and reduced resistance to colds and lung infections. The ozone in smog also inhibits plant growth and can cause widespread damage to crops and forests.

What is photochemical smog and its effects?

Short Term Effects of Air Pollution Photochemical smog is formed when sunlight interacts with certain chemicals in the atmosphere. Ozone is the main component in this type of air pollution. Ozone in the stratosphere protects us against harmful ultraviolet radiation, but on the ground, it is hazardous to human health.

What is smog made of?

This kind of visible air pollution is composed of nitrogen oxides, sulphur oxides, ozone, smoke and other particulates. Man-made smog is derived from coal combustion emissions, vehicular emissions, industrial emissions, forest and agricultural fires and photochemical reactions of these emissions.

What are the effects of smog?

Exposure to smog can lead to several different types of short-term health problems due to its ozone content. These include: Coughing and throat or chest irritation: High levels of ozone can irritate your respiratory system, generally lasting for a few hours after you’ve been exposed to smog.

What is difference between fog and smog?

Mist and fog are caused by water droplets in the air, and the only difference is how far you can see. Haze is the reflection of sunlight off air pollution, while smog is what happens when pollution causes low-lying ozone. Radiation fog happens when the temperature is cold and there are no winds.

What is the difference between smog and smoke?

As nouns the difference between smog and smoke is that smog is a noxious mixture of particulates and gases that is the result of urban air pollution while smoke is (uncountable) the visible vapor/vapour, gases, and fine particles given off by burning or smoldering material.

What is smog and acid rain?

Particularly for large metropolitan cities, smog and poor air quality is a pressing environmental problem. When sulfur dioxide and nitrogen oxides react with water vapor and other chemicals in the presence of sunlight, various acidic compounds form in the air and come to the earth as acid rain.

How is photochemical smog controlled?

Smog also causes corrosion of metals, stones and building materials. Control of Photochemical Smog Many techniques are used to control or reduce the formation of photochemical smog. (i) The most straight forward way is to minimize the release of oxides of nitrogen and hydrocarbons to the atmosphere.

What is smog and its types?

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.

How is smog formed how does it affect human health?

In present time’s smog are caused due to vehicular emission, industrial fumes which react in atmosphere along with sunlight to form photochemical smog. The air pollutants from smog cause serious problems to senior citizens, children and people with heart and lung problems leading to emphysema, bronchitis, asthma.

Why is the smog so bad in China?

The immense urban growth of Chinese cities substantially increases the need for consumer goods, vehicles and energy. This in turn increases the burning of fossil fuels, resulting in smog. Exposure to Smog poses a threat to the health of Chinese citizens.

How does smog contribute to global warming?

The new study concludes that black carbon, the soot particles in smoke and smog, contributes about twice as much to global warming as previously estimated, even by the 2007 Intergovernmental Panel on Climate Change. Dark particles in the air work to shade the Earth’s surface while warming the atmosphere.

What is sulfurous 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.