What are the importance of indoor environment and its pollution sources?

Indoor pollution is mainly caused by various volatile organic compounds in indoor air, which pollutes the indoor environment.

1, importance:

Nowadays, human beings are facing the third environmental pollution after "soot pollution" and "photochemical smog pollution", mainly indoor air pollution. American experts found that there are more than 500 kinds of volatile organic compounds in indoor air, including more than 20 kinds of carcinogens and more than 200 kinds of pathogenic viruses. The main hazards are radon, formaldehyde, benzene, ammonia, esters and trichloroethylene. A large number of shocking facts have confirmed that indoor air pollution has become an "invisible killer" that harms human health, and it has also become a common concern of all countries in the world. Research shows that indoor air pollution is 2-5 times more serious than outdoor air, and it can reach 100 times in special circumstances.

The main hazards are radon, formaldehyde, benzene, ammonia, esters and trichloroethylene.

2. Source:

From the current detection and analysis, the main sources of indoor air pollutants are: building and indoor decoration materials, outdoor pollutants, combustion products and human activities. Among them, the pollution of indoor decoration materials and furniture is the main aspect of indoor air pollution at present.