What are the causes of smog?

There are several reasons for the smog weather.

1, the main factor when the atmospheric pressure is low and the air does not flow. Because the air does not flow, the tiny particles in the air gather together and float in the air.

2. The ground is dusty and the air humidity is low. People and vehicles on the ground stir up dust.

3. Automobile exhaust is the main pollutant emission. In recent years, there are more and more cars in cities, and automobile exhaust is a factor of smog.

4. Secondary pollution produced by factories.

5. CO2 and other pollutants emitted by heating in winter.

Methods to prevent smog mainly include:

1, wear a mask. Medical masks can block 95% of 0.3 micron particles. Wear a mask. Choose a regular and qualified mask. Wear it at the same time, buy a model that matches your face size, and stick it on your skin to the maximum extent, so that polluted particles can't enter.

The mask cannot be washed. After you take it off, you should wait until it is dry before folding it, so as to prevent the breathing moisture from breeding bacteria on the mask. The elderly and patients with cardiovascular diseases should avoid wearing it, because it is a professional anti-virus aerosol mask with good sealing performance, and it is easy to breathe and feel dizzy after wearing it.

2. Try not to ride a bike when going out. Smog can temporarily reduce morning exercises and try to 10- 14 go out. At the same time, drink more water, smoke less, stay away from "second-hand smoke" and reduce the burden on organs such as lungs and liver. People who are used to riding bicycles and electric cars to work or going out for business should try to avoid the morning and evening rush hours of traffic jams and try to transfer to buses.

This is because many chemical components in automobile exhaust are not completely burned and will float with fine particles in the air. When you ride a bike or an electric car, your body needs oxygen, and your lungs will inhale a lot of air.