Smoke and charts! How can we protect ourselves in disaster weather?

Autumn and winter are the high season of smog, especially in recent years, the problem of environmental pollution has become more and more serious, and the problem of smog has also been widely concerned. In the past two days, the smog in the north has been sent to the south, and Shanghai and Jiangsu have "fallen". 12 15 at 9: 00 am, the data of Shanghai Environmental Monitoring Center showed that the real-time air quality index reached 3 16, the primary pollutant was PM2.5, and the air quality index in the past 24 hours was 254, which was a serious pollution. So when smog strikes, what kind of products should we choose and how to protect ourselves correctly?

How to correctly understand smog

In fact, smog weather has a long history. Only in recent years, due to the accumulation of environmental problems, smog problems have also begun to occur frequently. In many areas, there is even a phenomenon that PM2.5 is out of chart. The smog in the north mainly comes from the exhaust gas from heating and coal burning, which is actually a combination of the words "fog" and "haze". Our common PM2.5 is particulate matter with aerodynamic equivalent diameter less than 2.5 microns in the environment, and it is also an index to measure air quality.

Haze environment will cause serious and irreversible damage to human lungs, and it is also easy to induce cardiovascular diseases and respiratory infections. Long-term exposure to smog environment may even cause hardening and canceration of the lungs. Therefore, when smog weather strikes, it is particularly important to take correct protective measures.

Travel: Mask selection is very important.

Masks are especially important when traveling in foggy days. PM2.5 particles can penetrate deep into alveoli, but ordinary medical or disposable masks can't stop fine particles from entering and leaving, so we need to choose special anti-fog masks.

Masks can't stop smog.

Multi-layer cotton yarn splicing, disposable medical masks and activated carbon masks cannot be used as smog masks. For inhalable particles and fine particles in urban air, the filtration rate of masks is less than 30%, while activated carbon masks can only be used as a function of adsorbing and blocking odor.

How to choose an anti-fog mask

The common smog masks in the market need to be identified before purchasing to see if there is a clear and recognized mask implementation standard. In China, smog masks are divided into KN and KP, and their filtration efficiency is 90, 95 and 100 respectively. Generally, KN95 and KP 100 masks are commonly used. Smog masks are generally not low in price, so we should carefully screen cheap products.

Recommended products:

1, Honeywell Mask h 1005584

2.3M mask 900 1v upgrade

Indoor: Choose a good household purifier.

With the arrival of smog weather, air purifiers have become hot small household appliances in recent years. According to the needs of families, the demand for air purifiers is also different, but we must mainly grasp some of its core components when purchasing.

HEPA filter

Except for some products that use electric dust collection technology now, most purifiers are still presented in the form of filters, and HEPA filters, as the core components for filtering PM2.5, are particularly important when purchasing. High-quality HEPA filter is compact in texture and white in color. After a period of use, a large number of fine particles will accumulate inside, but unlike dust, they can be shaken off at will.

Scope of application of products

Air purifiers are not available in the whole house, and the applicable areas of different products are different, so they need to be properly selected according to the environmental conditions at home. When people are in different locations at home, they can choose to buy multiple purifiers or move one around the house, which needs to be decided according to the budget.

Recommended products:

1, Philips air purifier AC4030/ 10

2. Daikin air purifier MCK57LMV2

Editor's comment: Smog has become an environmental phenomenon in China. In addition to improving the natural environment and saving air quality, we can also use small household appliances to improve the surrounding air environment in a short time. The popularity of air purifiers also reflects people's concern and worry about environmental quality. Choosing the right products can improve our living environment to the greatest extent.