What are primary and secondary air pollutants with examples?

Primary air pollutants: Pollutants that are formed and emitted directly from particular sources. Examples are particulates, carbon monoxide, nitrogen oxide, and sulfur oxide. Secondary air pollutants: Pollutants that are formed in the lower atmosphere by chemical reactions.

What is a secondary air pollution?

Secondary air pollution is pollution caused by reactions in air already polluted by primary emissions (from factories, automobiles and so forth). An example of secondary air pollution is photochemical smog.

What are two primary air pollutants?

Primary Pollutants

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

What is primary and secondary air pollution quizlet?

Primary pollutants are harmful substances emitted directly into the air. Secondary pollutants are formed when primary pollutants react with one another or with the basic components of air to form new harmful pollutants.

What are secondary pollutants examples?

Examples of a secondary pollutant include ozone, which is formed when hydrocarbons (HC) and nitrogen oxides (NOx) combine in the presence of sunlight; NO2, which is formed as NO combines with oxygen in the air; and acid rain, which is formed when sulfur dioxide or nitrogen oxides react with water.

What is difference between primary and secondary pollutants?

Primary pollutants are pollutants that are emitted from a source, directly into the atmosphere. Secondary pollutants are pollutants formed either due to a reaction between primary pollutants themselves or between a primary pollutant and any other atmospheric particle.

Which of the following is called secondary air pollution?

Which of the following is a secondary pollution?

Secondary pollutants are not emitted directly. They are formed from the combination of primary pollutants with some other compound. Examples of secondary pollutants are Ozone, Formaldehyde, PAN (peroxy acetyl nitrate) and Smog etc.

What are the differences between primary secondary and toxic air pollutants?

Primary pollutants are emitted from natural or anthropogenic sources directly into the atmosphere, while secondary pollutants result from the chemical reactions or the physical interactions between the primary pollutants themselves or between the primary pollutants and other atmospheric components.

What is an example of a secondary pollutant quizlet?

Smog is an example of a secondary pollutant.

Is a secondary pollutant?

Secondary pollutants are pollutants which form in the atmosphere. These pollutants are not emitted directly from a source (like vehicles or power plants). Photochemical smog is made up of various secondary pollutants like ozone, peroxyacyl nitrates (PANs), and nitric acid (seen in Figure 2).

Is Pan a secondary pollutant?

Peroxyacetyl nitrate (PAN) and ozone are the two important secondary photochemical air pollutants found in the urban at- mosphere (1-3). Of the two, PAN is the more useful indicator of photochemical reactions in polluted air as, unlike ozone, it appears to have no large natural source (2-7).

What is an example of a primary pollutant?

Sulfur Oxides. Sulfur oxides are formed when fuels having sulfur undergoes combustion.

Nitrogen Oxides. Nitrogen oxides are poisonous and highly reactive gases that are formed after burning fuels at high temperatures.

Carbon Monoxide.

Volcanic Organic Compounds.

How are primary and secondary pollutants different?

A primary pollutant is an air pollutant emitted from a source directly into the atmosphere. A secondary pollutant is an air pollutant formed in the atmosphere as a result of the chemical or the physical interactions between the primary pollutants themselves or between the primary pollutants and other atmospheric components.

Which is a secondary air pollutant?

A secondary pollutant is an air pollutant formed in the atmosphere as a result of the chemical or the physical interactions between the primary pollutants themselves or between the primary pollutants and other atmospheric components. Major examples of secondary pollutants are photochemical oxidants and secondary particulate matter.

What are primary air pollutants?

Primary air pollutants (PAPs) are those that are emitted directly into the air from sources. Examples – Sulphur dioxide, nitrogen oxides, carbon monoxide, volatile organic matter, particulate matters, lead, ammonia etc.

What are primary and secondary air pollutants with examples? Primary air pollutants: Pollutants that are formed and emitted directly from particular sources. Examples are particulates, carbon monoxide, nitrogen oxide, and sulfur oxide. Secondary air pollutants: Pollutants that are formed in the lower atmosphere by chemical reactions. What is a secondary air pollution? Secondary air pollution…