What are the main air pollutants?

1, particulate matter: refers to liquid and solid substances in the atmosphere, also known as dust.

2. Sulfur oxides: the general term for sulfur oxides, including sulfur dioxide, sulfur trioxide, sulfur trioxide, sulfur monoxide, etc.

3. Carbon oxides: mainly carbon monoxide.

4. Nitrogen oxides: the general term for nitrogen oxides, including nitrous oxide, nitric oxide, nitrogen dioxide and nitrogen trioxide.

5. Hydrocarbons: Compounds formed by carbon and hydrogen, such as methane, ethane and other hydrocarbon gases.

6. Other harmful substances: such as heavy metals, fluorine-containing gases and chlorine-containing gases.

Air pollutants:

Air pollutants. Refers to those substances discharged into the atmosphere due to human activities or natural processes, which have harmful effects on people and the environment. In a clean atmosphere, the composition of the constant gas can be ignored. However, in a certain range of the atmosphere, there are trace substances that did not exist before. Its quantity and duration may adversely affect and harm people, animals, plants, articles and materials. When the concentration of pollutants in the atmosphere reaches a harmful level, even destroying the ecological system and the conditions for the normal survival and development of human beings, the phenomenon that harms people or things is called air pollution.