Recently, the circle of friends said that N95 can not always bring, can damage the respiratory system. It is understood that N95 filter mechanism is electrostatic fiber, relying on the positive ion adsorption particles, how can this mechanism damage the respiratory system? The reason is to say that wearing a mask can lead to poor breathing, which can lead to insufficient oxygen supply for a long time.
What is the N95 mask?
The N95 mask has become the darling of the market since SARS. N95 is not a specific product name. It is a U.S. standard mask classification, that is, the US NIOSH standard 'filter non-oily particle efficiency is above 95%', and is reviewed by NIOSH (National Institute of Occupational Safety and Health). A type of mask.
In general, the higher the filtration efficiency, the better the protective effect, but also the greater the respiratory resistance. Therefore, N95 is the best balance of protection and comfort, and therefore it has become the choice for most people.
Can the N95 mask be worn for a long time?
N95 mask really can not wear for a long time? In this regard, the relevant experts said that according to the German Labor Insurance Regulations, workers can not wear N95 masks for more than half an hour each time. After half an hour, they must take off their masks for normal breathing for more than half an hour. Doing so may cause permanent damage to the respiratory system. Elderly children and patients with cardiovascular diseases should not be used. Wearing N95 masks has a certain protective effect, but it should not be worn for a long time.
How to choose a tamper-proof mask?
Consumers should pay attention to the three aspects of the mask's implementation standards, brand, and functional characteristics when selecting a tamper-evident mask. Select masks to prevent PM2.5, we must first observe the packaging and product body to see if it is marked with a clear and approved mask implementation standards, such as 'N95', 'FFP1' and so on. When we buy, we must pay attention to the instructions on the mask to determine which material it meets.
Anti-mite masks, we may be most familiar with 3M. Its anti-particulate masks, a single price is basically 10-20 yuan, compared with other normal anti-particulate masks, cost-effective; followed by N95 masks, it's main material is cotton cloth plus mask filter , Plus the overall design of the mask seal against the PM2.5 and bird flu virus filter effect is quite good, N95 mask and then industrial dust and toxic gas environment also has a good protective effect; again is the Honeywell mask, Huo Nivel is one of the world's largest manufacturers of safety equipment, and its masks are also well-known, but Honeywell produces fewer types of masks, the famous one, the Honeywell H901 mask.
At present, medical protective masks and dust masks for industrial use have national standards, while other types of masks with nominal protective functions are not subject to unified national standards, and there are quality problems. Sources said that China's first national standard for masks is expected to be announced as soon as possible in the first half of this year. The new national standard will no longer use filtration efficiency as the main evaluation index. Instead, a comprehensive evaluation system of 'protective effect' will be adopted to ensure that the quality of air after filtering by masks reaches an excellent standard, ie, the real-time concentration of PM2.5 is 75 μg/m3. the following. Under the impetus of the big environment, the flood prevention mask market will be more standardized.
What harm does smog cause to people?
In hazy weather, people's muscles are tense, and muscle strain is very easy to occur. In addition, due to lack of UV radiation in hazy days, vitamin D production in the human body is insufficient, and it is easy to produce mental laziness, depression, etc., and may also lead to calcium deficiency. The PM2.5 is very easy to adsorb PAHs and other organic pollutants and heavy metals, pregnant women exposed to such an environment for a long time, the chance of fetal teratogenic, mutagenic increased significantly. Haze can affect the cardiovascular system, because patients with heart failure, when stimulated by the respiratory tract, can cause breathing difficulties or shortness of breath and aggravate heart failure.
In this regard, it is recommended that pregnant women, children and the elderly should minimize their outbound activities when the weather is bad. If you want to go out, don't forget to wear a mask and don't wear it too long. At home, it is best to keep the room ventilated. People with the right conditions may wish to use air purifiers to improve indoor air quality.
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