What are some examples of primary pollutants?

Primary Pollutants

carbon monoxide (CO) odorless, colorless, poisonous gas.
oxides of nitrogen (NO_x, NO) NO - nitric oxide.
sulfur oxides (SO_x) SO₂ - sulfur dioxide.
volatile organic compounds (VOCs) highly reactive organic compounds.
particulate matter (dust, ash, salt particles) bad for your lungs.

Also, what does photochemical smog consist of?

Photochemical smog is the chemical reaction of sunlight, nitrogen oxides and volatile organic compounds in the atmosphere, which leaves airborne particles and ground-level ozone. This noxious mixture of air pollutants may include the following: Aldehydes. Nitrogen oxides, particularly nitric oxide and nitrogen dioxide.

What is the main component of photochemical smog?

Photochemical smog is a mixture of air pollutants which have been chemically altered into further noxious compounds by exposure to sunlight. The main components of photochemical smog are nitrogen oxides, Volatile Organic Compounds (VOCs), tropospheric ozone, and PAN (peroxyacytyl nitrate).

What is photochemical smog made up of?

That mixture of bad chemicals is called photochemical smog. The chemicals in photochemical smog include nitrogen oxides, Volatile Organic Compounds (VOCs), ozone, and PAN (peroxyacytyl nitrate). Nitrogen oxides mostly come from the engines of cars and trucks.

Is carbon dioxide a secondary pollutant?

Usually, primary pollutants are substances directly emitted from a process, such as ash from a volcanic eruption, the carbon monoxide gas from a motor vehicle exhaust or sulfur dioxide released from factories. Secondary pollutants are not emitted directly.

What are the five primary air pollutants?

Secondary pollutants: chemicals released into air.
The Conventional (Criteria) Pollutants.
Sulfur dioxide (SO2)
Nitrogen Oxides (NOx)
Carbon monoxide (CO)
Particulate Matter.
Volatile organic compounds (VOCs)

Are CFCS primary or secondary pollutants?

Primary & Secondary Air Pollutants. The major primary pollutants are Oxides of Sulphur, Oxides of Nitrogen, Oxides of Carbon, Particulate Matter, Methane, Ammonia, Chlorofluorocarbons, Toxic metals etc. The secondary pollutants are not emitted directly.

What is the photochemical smog?

Photochemical smog is a major contributor to air pollution. The word “smog” was originally coined as a mixture of “smoke” and “fog” and was historically used to describe air pollution produced from the burning of coal, which released smoke and sulfur dioxide.

Is Mercury a primary or secondary pollutants?

These include sulfur and nitrogen compounds, particulate matter, volatile organic compounds such as paint fumes and solvents, and toxic metals such as mercury. Secondary pollutants, such as ozone, are formed when primary pollutants undergo chemical reactions in the atmosphere.

What are the two examples of particulate air matter?

Particulates, or particulate matter (PM), refer to any mixture of solid particles or liquid droplets that remain suspended in the atmosphere for appreciable time periods. Examples of particulates are dust and salt particles, and water and sulphuric acid droplets.

What pollutants are in the air?

A Factsheet is available for each of these air pollutants:

Carbon monoxide.
Lead.
Nitrogen dioxide.
Ozone.
Particles.
Sulfur dioxide.

What is a primary air pollutant and what is an example of one?

Other examples include carbon monoxide gas from motor vehicle exhaust, or the sulphur dioxide released from factories. Secondary pollutants are not emitted directly. Rather, they form in the air when primary pollutants react or interact. Ground level ozone is a prominent example of a secondary pollutant.

What is not a criteria pollutant?

Criteria Air Pollutants. The Clean Air Act requires EPA to set National Ambient Air Quality Standards (NAAQS) NAAQS are currently set for carbon monoxide, lead, ground-level ozone, nitrogen dioxide, particulate matter, and sulfur dioxide. for six common air pollutants (also known as "criteria air pollutants.

What is a type of air pollution?

The U.S. Environmental Protection Agency (EPA) has named the six most common air pollutants, which are found all over the United States. These pollutants are ozone, particulate matter, carbon monoxide, nitrogen oxides, sulfur dioxide and lead.

What are the primary pollutants that come from burning coal?

Such emissions include:

Nitrogen oxides (NOx).
Sulfur dioxide (SO2).
Mercury (HG).
Particulate matter (PM), also known as particle pollution, includes the tiny particles of fly ash and dust that are expelled from coal-burning power plants.

What is the main source of acid rain?

Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

Which air pollutants can aggravate bronchial asthma in humans?

Environmental Chapter 12 Test

A	B
Which air pollutants can aggravate bronchial asthma in humans and cause fish to suffocate?	acids formed from nitrogen compounds
What two acids are involved in acid percipitation?	sulfuric acid and nitric acid

What is the Clean Air Act of 1970?

The enactment of the Clean Air Act of 1970 (1970 CAA) resulted in a major shift in the federal government's role in air pollution control. This legislation authorized the development of comprehensive federal and state regulations to limit emissions from both stationary (industrial) sources and mobile sources.

Is smog a primary or secondary pollutant?

Modern 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 that react in the atmosphere with sunlight to form secondary pollutants that also combine with the primary emissions to form photochemical smog.

How Smog is formed?

The atmospheric pollutants or gases that form smog are released in the air when fuels are burnt. When sunlight and its heat react with these gases and fine particles in the atmosphere, smog is formed. It is purely caused by air pollution.

What are some examples of primary pollutants?

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