Smog composition

Definition

Smog composition refers to the mixture of pollutants that make up smog, a type of air pollution. It typically includes ground-level ozone, particulate matter, nitrogen oxides, volatile organic compounds (VOCs), and other chemicals.

Related terms

Photochemical smog:

A type of smog formed when sunlight reacts with nitrogen oxides and volatile organic compounds in the atmosphere. It is often seen in urban areas with high levels of vehicle emissions.

Particulate matter (PM):

Tiny solid or liquid particles suspended in the air. They can be natural (e.g., dust) or anthropogenic (e.g., soot from burning fossil fuels) and have adverse health effects when inhaled.

Volatile organic compounds (VOCs):

Organic chemicals that easily evaporate at room temperature. They are emitted by various sources such as paints, solvents, gasoline vapors, and contribute to smog formation.