Handbook of survival under smoke
First, don't go out and wear a mask.
Install a mobile phone application to check PM2.5 at any time, and basically don't go out above 200, and wear N95 mask when going out above 100.
In recent years, I have spent hundreds of dollars on masks every year. 1 I tried more than a dozen masks in 40 yuan, and I also bought riding masks and gas masks. My condition is that I wear glasses and my head is big, so I need to "pull on" instead of "ear on" to avoid pinching my ears. As for the function of filtering acid gas such as breathing valve, I think it is of little significance if you don't need to wear a mask to exercise or be in an environment full of automobile exhaust and industrial waste gas. After all, many functions will increase the cost. So to sum up, I think the pig nose is the most cost-effective, and there is one around 2 yuan, which is more convenient to wear, but it is not convenient to fold and store in the bag. Those with breathing valves are the most comfortable to wear, but they are often more expensive. You can consider sending friends from other places to Beijing as a meeting gift. Let's try it ourselves. What suits us is the best.
Theoretically, the mask is disposable, but you can wear it airtight or black before changing it. No authority has stipulated that "wearing N95 mask should not exceed half an hour", and there is no evidence that it will cause permanent damage to the respiratory system. Of course, masks will increase the resistance to breathing, and it is best for the elderly and children with weak cardiopulmonary function to follow the doctor's advice.
Second, the ventilation air purifier
Remember to open the window for ventilation when you go home, and turn on the air purifier after closing the window, which is basically not closed. PM2.5 is very harmful. If there is no air purifier at home, you'd better close the doors and windows. However, there are more than 400 indoor PM2.5, and there will be odor and a lot of carbon dioxide in the house if it is not ventilated for a long time, so it is best not to ventilate.
My personal practice is to open the window and ventilate immediately after coming home from work, and then turn down the air purifier at the maximum setting for half an hour. The first air purifier I used was electrostatic adsorption. The consumables were cheap, but it smelled of ozone. My bedroom uses the mainstream model products of HEPA technology international first-line brand, but it is not cheap, and the cost of replacing this reliable HEPA filter membrane once every six months is also very high. If I buy a house and decorate it in the future, I will install a fresh air system.
Third, a balanced diet.
Dietary remedies in the face of smog are unreliable, but combined with the pathogenic mechanism of smog and my personal experience, we should pay attention to the intake of lean meat, vegetables and fruits rich in protein, vitamin A and vitamin C.
In addition, if you don't eat the fish produced in Gao Fushuai, the recommended intake of vitamin D in China people's daily diet only depends on egg yolk and pork, which is far from 600IU. On the one hand, getting vitamin D in the sun is easy to get tanned, on the other hand, you can't get enough vitamin D in foggy days. Therefore, some data show that more than 60% of healthy vitamin D in Shanghai is deficient and insufficient. A recent report in Beijing shows that 99% of women of childbearing age are deficient in vitamin D. Long-term vitamin D deficiency is not good for bone health. Don't wait until you are old to regret it. I suggest that friends with financial conditions have the opportunity to test the level of vitamin D, and pay attention to supplement it if it is insufficient. Of course, it is safe for you to buy your own supplements and take them directly within 2000IU a day.
Fourth, indoor sports.
Staying at home all day is obviously not good for your body and mind, so keep exercising. However, it is suggested that sports such as treadmills and indoor dust are also sources of PM2.5 Therefore, it is recommended to wear a mask and do dumbbell and core muscle exercises after landing frequently. V. Moving If you live in a city with very serious air pollution and you are a sensitive group, such as allergic rhinitis, then I think you can consider moving. How harmful is air pollution? Below, the left side is more common, and the right side is some chronic diseases. Air pollution has a great influence on cardiovascular diseases.
One day, there was such a Weibo fire:
As Baidu, I knew that the invited experts would reply in the past. In fact, all I mentioned are well-documented facts:
In other words, I started to introduce the knowledge about air pollution in my column on 20 1 1:
This is not alarmist, it is supported by authoritative organizations:
At present, a large part of children's allergies are also related to air pollution, of course, many other places are also very important.
In addition, formaldehyde pollution in indoor air is a very serious problem. In fact, common chemical removal methods are not ideal, and ventilation is the best. However, when there is smog outside,
So we have to choose some air purification equipment, there are three main types:
The new home is suitable for installing fresh air system. I have used electrostatic adsorption, which really smells of ozone, so it is better for people to use physical filtration. How to choose an air purifier?
Aside from price, appearance, after-sales and other factors, in terms of performance, the most important thing to choose an air purifier is to pay attention to these three keywords:
First of all, the HEPA guidelines for allergic diseases will also mention the necessity of using HEPA purifiers. This is actually the filtration standard of the filter screen, which is stipulated by the US Department of Energy. Personally, I suggest only recognizing these four letters. Unless the other person is ULPA, the description of EPA, HEPA, HEPA and so on will not work.
Secondly, CADR is basically the most important reference index, that is, the efficiency of air purifier to purify air. Obviously, the bigger the value, the better. But first pay attention to the unit. The standard of American Household Appliance Manufacturers Association is CFM, while the unit indicated in most domestic manufacturers' advertisements is m3/h, and the value obtained by multiplying the former by 1.7 is almost equivalent to the latter. That is to say, if a manufacturer advertises 450m3/h, it sounds like a big number, but it is also 264.7CFM after conversion. Secondly, CADR is the efficiency of "cleaning" the air, so don't be confused by the so-called "ventilation". Finally, the American standard and our national standard actually have different test conditions and cannot be equated directly.
Third, noise Now there are more and more air purifier products on the market, and manufacturers all understand the above two indicators. However, if the air duct design is unreasonable, the quality of the motor is not good enough, and the noise is often difficult to control, you will definitely not drive to the maximum gear when you buy it home. At this time, the so-called CADR value is meaningless. On the one hand, you can look at the product introduction, on the other hand, you can also search for some comments online. Having said that, the most important thing to reduce the harm of air pollution is:
What else can I do?
Actively participate in environmental protection actions and participate in public discussions.
Drive less, take public transportation, and try to walk and ride a bike when the weather is good.