What is the difference between primary pollutant and a secondary pollutant?
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.
What's the difference between primary and secondary pollutants give examples of each?
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 pollutant quizlet?
What is a secondary pollutant? A secondary pollutant is when a primary pollutant comes into contact with other primary pollutants or with naturally occurring substances. An example is ground-level ozone.
What does secondary pollution mean?
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 causes secondary pollutant?
Secondary pollutants form when primary pollutants react in the atmosphere. For example, ground-level ozone is created when hydrocarbons (HC) and nitrogen oxides (NOx) combine in sunlight. Some pollutants may be both primary and secondary.
What is called secondary air pollutant?
Secondary pollutants are the air pollutants that are not directly emitted. Thus ozone is known as secondary air pollutant .