What are primary and secondary air pollutants? Give one example of each.
Answers
Answered by
4
Explanation:
Home » Glossary » PQRS » Primary & Secondary pollutant
Primary & Secondary pollutant
Definition:
A primary pollutant is an air pollutant emitted directly from a source.
A secondary pollutant is not directly emitted as such, but forms when other pollutants (primary pollutants) react in the atmosphere.
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.
Similar questions