Classify the following pollutants as primary pollutants (PP) and secondary pollutants (SP).
Ozone, Carbon monoxide, Particulate matter, Photochemical smog, Nitrogen oxides, Aerosol/mist, Hydrocarbons, Peroxy-Acetyl-Nitrate, Sulphur dioxide
1.
PP: Ozone, Photochemical smog, Aerosol/mist, Peroxy-Acetyl-Nitrate
SP: Carbon monoxide, Particular matter, Nitrogen oxides, Hydrocarbons, Sulphur dioxide
2.
PP: Ozone, Photochemical smog, Carbon monoxide, Particular matter, Nitrogen oxides
SP: Aerosol/mist, Peroxy-Acetyl-Nitrate, Hydrocarbons, Sulphur dioxide
3.
PP: Carbon monoxide, Particulate matter, Nitrogen oxides, Hydrocarbons, Sulphur dioxide
SP: Ozone, Photochemical smog, Aerosol/mist, Peroxy-Acetyl-Nitrate
4.
PP: Carbon monoxide, Particulate matter, Aerosol/mist, Peroxy-Acetyl-Nitrate
SP: Nitrogen oxides, Hydrocarbons, Sulphur dioxide, Ozone, Photochemical smog