Can the one dollar mask of the United States prevent smog?

The composition of smog is very complex, with sulfur dioxide, nitrogen oxides and inhalable particulate matter being the main components of haze, the first two being gaseous pollutants, and the last particulate matter being the main culprit of aggravating haze weather pollution. They combine with the fog and make the sky gray in an instant. In addition, the formation of haze can also contain a variety of harmful fine particles, toxic substances up to more than 20 kinds, including acids, alkalis, salts, amines, phenols, etc., as well as dust, pollen, mites, influenza virus, tuberculosis bacillus, pneumococcus, etc., its content is dozens of times that of ordinary atmospheric water droplets.

The biggest impact of haze is on the human respiratory system, and the diseases caused by it are mainly concentrated in respiratory diseases, cerebrovascular diseases, nasal inflammation and other diseases. However, because the composition of haze is so complex and diverse, and its content is different in different regions and at different times, it is difficult to say that the haze itself is carcinogenic, but that some of the substances in it are carcinogens. For example, in 2009, the U.S. Environmental Protection Agency (EPA) released a comprehensive scientific assessment report on air particulate matter, which pointed out that there are sufficient scientific research results to prove that atmospheric fine particles can adsorb a large number of carcinogens and genotoxic mutagenic substances, which have negative effects on human health, including increasing mortality, aggravating chronic diseases, worsening respiratory and heart diseases, changing lung function and structure, affecting reproductive ability, and changing the immune structure of the human body.

Can you think for yourself?

The choice of dust mask is selected according to your use, if it is just cold and warm, the general mask will do, if it is dust-proof and haze-proof, then it is recommended to choose a KN100 level half mask, and the following points should be paid attention to when choosing a dust mask:

The way to clean dust: the scientific selection of dust masks certified by GB2626-2006 standards can help prevent lung damage.

1. Choose a duplex half mask type. Disposable masks are not suitable for long-term or occupational protection due to their high air leakage rate.

2. Select KN100 level. A high dust environment with a low protection rate will lead to physical injury.

3. Choose a silicone mask, which has a relatively long service life, soft and comfortable. Wear it for a long time and it is not easy to cause allergic reactions. Masks with high rigidity are prone to facial indentation.

4. Masks are divided into large and small sizes, which is extremely important. It is not recommended to buy those so-called universal models of masks, which are prone to air leakage.

5. There are two types of masks covering the mouth and nose, covering the mouth, nose and chin, and it is recommended to use the latter, which is relatively comfortable.

6. It is recommended to choose a breathing mask. Some masks are designed with double filter cotton + double filter surface, which is relatively smooth to breathe and has a long service life.

At present, the better ones to do KN100 are Bao Shun'an.

Refer to the instructions for use, pay attention to the timely cleaning of the mask, and replace it with a new one in time. In addition, smog is the most damaging to the respiratory system. In addition to wearing a mask, the nasal cavity can be cleaned and recuperated with a nasal irrigation device to maintain the good filtering capacity of the nasal cavity to the particles that stop the particles, ensure that the nasal cavity can filter haze particles more effectively, and also have great benefits for the protection of the entire respiratory system.

To put it simply, on haze days, if you want to protect the health of the respiratory system, go out, wear an anti-haze mask, and go home to wash your nose.

To see whether the mask can really prevent haze, you can't just look at the mask**, but see whether the anti-haze mask is qualified. When choosing an anti-smog mask, the following points are mainly considered:

1. Airtightness, the quality of airtightness determines the anti-haze effect, and the general mask can leak air from both sides, which greatly reduces the filtration effect.

2. Breathability, ordinary masks will give people a feeling of stuffiness when worn for a long time, breathing is not smooth, and even causes hypoxia.

3. Hygiene and recycling rate of masks.

Anti-smog masks, when worn correctly and effectively sealed, can effectively reduce the level of exposure to air pollution from such particulate matter. The specific choice of which brand and model of anti-haze mask should be decided according to the use habits, suitability, and whether it is necessary to prevent odors at the same time, regardless of whether it is good or bad.

In fact, anti-smog masks are still useful, but it is not long to prevent this fine particles, and the only standard that can be referred to is the national standard GB2626 industrial protection standard, which is formulated with reference to the N95 and N100 standards of the United States, and the protection effect of fine particles between PM5 can reach more than 90. When buying a mask, you must see whether there is a quality and safety mark, QS mark or safety protection certification. If there is no national standard and QS, they are all fake and shoddy copycat products, and they can't file fine particles at all.

This type of product generally cannot be wetted, so it cannot be washed. Disposable masks need to be discarded after wearing for 4 to 10 hours, because bacteria will multiply quickly (the so-called antibacterial masks on the market are all gimmicks, and all of them are false propaganda after testing).

In strong haze weather, wear a protective mask quickly, and the surface of the filter material will change color and dust in 1-2 hours. Those who don't have anything at all, fine particles are passed through to the body).