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.
What are secondary environmental pollutants?
Secondary pollutants are defined as the pollutants which form in the atmosphere. These secondary pollutants do not come directly from a source (like vehicles or power plants). It forms as a result of the pollutants the sources emit and reacting with the molecules in the atmosphere.
Is mercury a secondary pollutant?
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.
Is smog a secondary pollutant?
An important secondary pollutant for photochemical smog is ozone, which is formed when hydrocarbons (HC) and nitrogen oxides (NOx) combine in the presence of sunlight; nitrogen dioxide (NO2), which is formed as nitric oxide (NO) combines with oxygen (O2) in the air.
Which among the following is secondary pollutant?
The correct answer is Smog.
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).
Are examples of secondary pollutants quizlet?
Examples of secondary pollutants include ozone (formed when hydrocarbons and nitrogen oxides combine in the presence of sunlight), NO2 (formed as NO combines with oxygen in the air), and acid rain (formed when sulfur dioxide or nitrogen oxides react with water).
Is CO2 secondary pollutant?
Carbon Monoxide (CO)
Carbon monoxide is released from volcanoes and forest fires as well. Secondary pollutants like ozone and carbon dioxide (CO2), a greenhouse gas, come from carbon monoxide.
Is SO2 a secondary pollutant?
Sulfur dioxide is also a natural byproduct of volcanic activity. Like nitrogen dioxide, sulfur dioxide can create secondary pollutants once released into the air. Secondary pollutants formed with sulfur dioxide include sulfate aerosols, particulate matter, and acid rain.
Is tropospheric ozone a secondary pollutant?
Tropospheric ozone (O3) is a secondary pollutant that results from photochemical reactions of NOx and VOCs involving generally well-understood reactions (Jenkins and Clemitshaw, 2000).
Which is not secondary pollutant?
The correct answer is Sulphur dioxide.
Is NO2 a secondary pollutant?
Nitrogen dioxide and other nitrogen oxides react with other chemicals in the air to form other pollutants, known as secondary pollutants. These secondary pollutants include ozone, particulate matter, acid rain, and other toxic chemicals.
Is nh3 a secondary pollutant?
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.
