How to take precautions against heavy polluted weather?

Go out less.

Minimize outdoor exposure time and reduce the intensity of outdoor activities. In particular, people with chronic diseases such as cardiovascular and cerebrovascular diseases should reduce outdoor activities in foggy days. Because it is easy to induce myocardial infarction, angina pectoris and other diseases due to hypoxia at this time. When moderate or severe haze weather occurs, the elderly, the weak, the sick and the disabled should reduce going out.

Wear masks

When you have to go out, pay attention to strengthen self-protection and choose a suitable dust mask. When choosing a mask, try to choose a dense material to block particles to the greatest extent. At the same time, pay attention to whether the mask has an adsorption layer, which can adsorb particles that penetrate the mask.

Travel by car

Little friends who drive in foggy days should pay attention to these. Remember!

Correct use of lighting

When driving in foggy days, you should turn on fog lights, position lights, danger warning flashlights or low beam lights in time, do not use high beam lights, keep a safe distance, and do not overtake.

Pay attention to distance and speed.

When driving, you should keep a safe distance from the car in front and reduce the speed. If you need to slow down, you should slowly release the accelerator and gently step on the brake continuously to prevent collision, scraping and rear-end collision.

In foggy weather, people's sight distance is shortened, and the environment in front that drivers can observe is also shortened. Therefore, in addition to controlling the speed, it is also necessary to maintain a suitable safe distance.

Encounter heavy fog

In case of sudden fog in expressway, when the visibility in expressway is less than 50m, the speed should not exceed 20km per hour, so leave expressway from the nearest exit as soon as possible.

Household living goods

In the face of smog, how should we break it?

Close the doors and windows

In foggy days, doors and windows should be kept closed to reduce the permeability of air pollutants from outdoor to indoor and reduce the indoor PM2.5 concentration. You can choose an indoor air purifier with brand reputation, or you can plant green plants indoors to reduce indoor dust and PM2.5 concentration.

Eat lightly

Adjust the diet properly, and a light diet is better. You can eat more foods rich in vitamin A and beta-carotene. Eating lotus seeds, lilies, tremella soup, duck porridge and other foods has the function of nourishing the lungs.

Regulating emotion

People who are psychologically fragile and have psychological barriers will feel extremely heavy, nervous and depressed in foggy weather. Such people can watch comedies and TV plays at home or listen to cross talk to cheer themselves up.

Three things to go out and come back.

Wash your face, rinse your mouth and clean your nose. It is best to wash your face with warm water, which can effectively clean the smog particles attached to the skin; Gargling is to remove the dirty things attached to the mouth; The key is to clean the nasal cavity. After washing your hands, hold warm water, gently absorb water with your nose and blow your nose quickly, and repeat it several times, and all the dirty things in your nasal cavity will be cleaned up.

In smoggy weather, masks have become a necessity, so how to choose masks? How often do you need to change it? Let's study together.

How to choose a mask?

How to choose a mask with anti-fog effect? Take the following mask as an example:

Paragraph 1: 3M with breathing valve.

The second paragraph: 3M has no breathing valve.

Paragraph 3: cotton mask with carbon bag inside.

Paragraph 4: cotton mask to keep warm.

Paragraph 5: Disposable medical masks

Paragraph 6: Masks, masks similar to disinfection masks.

Which would be better to block PM2.5?

The first two 3M models should be valid.

In the third and fourth paragraphs, at present, the blocking effect on PM2.5 is not great.

The third one, made of cotton, has a very large caliber, and basically does not have much blocking effect on PM2.5. The carbon package inside is activated carbon, and most of it absorbs invisible fog, that is, toxic gases and substances, and has no blocking effect on fine particles and dust. In addition to the filter paper material of the mask itself, it depends on whether it fits. If the carbon bag is only on one side, air can be inhaled from the other side.

As for the fourth paragraph, the effect is even less. First of all, its air tightness is very, very poor. When we inhale gas, it will enter from all around. Second, this material can't stop PM2.5

The fifth kind of medical mask is often worn by clinicians. Compared with small fine particles, it is not very effective.

The sixth paragraph may be better as occupational protection.

What are the two criteria for choosing a "3M" mask?

3M basically acts as a barrier to PM3, but at present, 3M has many markets, depending on two standards. One of them is an American (NROSH), whose full name is the National Institute of Occupational Safety and Health. Those who meet this standard, especially those with this logo, can obviously block PM2 or PM2.5 if they are only 3M, but this logo is not written, so you may have to make a discount. In addition, we also have domestic standards, and the national standard GB should be 26262006.

How often do you change the mask?

It must be replaced after eight hours, after eight hours of continuous wearing, or eight hours in total. Even 3M masks with strong air tightness need to be replaced at least once a week.

The respiratory tract is fragile and not suitable for people wearing masks. How to take preventive measures?

The best way is to go out less and buy a better quality air purifier to make your microenvironment cleaner.