primary pollutants

Primary pollutants are substances released directly into the air from sources like factories, vehicles, and wildfires. Examples include carbon monoxide from car exhaust, sulfur dioxide from burning coal, and nitrogen oxides from engines. These pollutants are harmful because they can cause health problems, contribute to acid rain, and lead to smog formation. Unlike secondary pollutants, which form through reactions in the atmosphere, primary pollutants are emitted directly and can immediately impact air quality. Managing primary pollutants involves reducing emissions at their source to protect environmental and public health.