What are examples of secondary air pollutants?

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 the 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 secondary pollutants definition?

Secondary pollutants are pollutants which form in the atmosphere. These pollutants are not emitted directly from a source (like vehicles or power plants). Instead, they form as a result of the pollutants emitted from these sources reacting with molecules in the atmosphere to form a new pollutant.

What is primary and secondary pollutants with example?

Examples of primary pollutants include sulfur dioxide (SO2), carbon monoxide (CO), nitrogen oxides (NOX), and particulate matter (PM). Examples of secondary pollutants include photochemical oxidants (ozone, nitrogen dioxide, sulfur trioxide) and secondary particulate matter.

Is CO2 a secondary pollutant?

Secondary pollutants like ozone and carbon dioxide (CO2), a greenhouse gas, come from carbon monoxide.