Common sources of indoor air pollution

Smog is an important source of indoor air pollution. In a smoking room, the particulate matter from second-hand smoke accounts for about 90% of the total indoor PM2.5.

As long as you can smell smoke in the room, PM2.5 may have exceeded the standard. Moreover, smoking can also cause the problem of "third-hand smoke". The tiny particles produced by smoking will remain on clothes, walls, carpets, furniture, and even hair and skin and be brought indoors and outdoors.

The kitchen is also the main source of indoor inhalable particulate matter, including incomplete combustion of fuel used for cooking and cooking, and soot. If it is not discharged in time, it is easy to make the PM2.5 concentration in the kitchen exceed the standard.

Harmful substances released from decoration materials are also one of the main reasons for indoor PM2.5 exceeding the standard. Materials such as paint, marble, plywood, interior wall coatings, plastic veneers, and adhesives all contain organic volatiles such as formaldehyde, benzene, ammonia, and toluene, which will release a large amount of harmful gases, and the release is continuous. These are all possible Lead to the production of PM2.5 particulate matter.

Dust accumulation is also an important factor affecting indoor air quality. The quilt, under the bed, carpet and household appliances are all dead spots for household dust accumulation.