Chemical equation leading to heavy pollution weather

Mainly divided into sulfur-containing pollutants, carbon-containing pollutants, nitrogen-containing pollutants and chlorine-containing pollutants.

Expansion: Heavily polluted weather: The air quality index (AQI) * * is divided into six levels, ranging from first-class excellent, second-class good and third-class light pollution to fifth-class heavy pollution and sixth-class serious pollution. The pollutants monitored include sulfur dioxide, nitrogen dioxide, carbon monoxide, ozone, PM 10 and PM2.5 * * *. The grade standard of meteorological condition forecast of air pollution is consistent with the grade standard of air quality index (AQI), which is divided into six grades. It is clear whether the influence of meteorological conditions on air pollution is beneficial to the diffusion and removal of pollutants or not. The indicators of early warning of heavy pollution weather are air quality index and duration days.