There are many reasons, such as more plants in the house, if you want to carry out respiration at night will also lead to the value of the rise, and at night people in the process of sleep, but also exhale carbon dioxide and other gases, the cups and sheets in the process of shaking will also cause the indoor pollution index rose.?

Generally air purifiers meet the standard when PM2.5 reaches 2. When it reaches 5, it indicates a very high level.PM2.5 is a substance that floats in the air. It is so small that it can enter human lungs and affect human health. Therefore, we must take appropriate measures to prevent it.

Reasons for high indoor pm2.5 in normal times

1. Smoking indoors

If you smoke two cigarettes in a 15-square-meter room, the PM2.5 concentration will explode. Secondhand and thirdhand smoke in the room is a major factor. As long as there are smokers, PM2.5 at this point will be higher than outdoor PM2.5. If the entire air circulation system is common throughout the building and there are many smoking rooms, PM2.5 will be very high throughout the general circulation.

2, kitchen fumes

Frying and grilling are done indoors. If you don't pay attention to ventilation and don't scientifically purchase, install, use and maintain a range hood, kitchen fume pollution will certainly be higher than office facilities. Secondly, the kitchen itself requires fuel, which is an important source of indoor air pollution. It will also depend on the difference in the ignition point of cooking oil. Some residents also like to use oil twice, which makes the oil's ignition point higher.

3. Home Decoration

We are now increasingly using stone for decoration. Besides the bathroom, almost 20% of the living room, bedroom and kitchen are occupied by stone. Among them there is also the pollution of radon and the stone itself, both of which are carcinogens.

Furniture is usually painted with several coats of varnish, then paint, then glue. This combination of furniture may look good, but there are adhesives with benzene and formaldehyde as the main ingredients at every joint. Some homes also have floor glue, wallpaper, and floor leather. These are a large number of chemical materials and a significant component of indoor VOCs and volatile gases. These are also indoor PM2.5.