[comprehensive] Experts teach you how to buy a snorkel mask

Is the anti-haze mask on the market really effective? What is the principle of flood prevention masks? What to wear masks? In response, Yang Xiyao, director of the Sensation Office of the Anji sophomore hospital, answered the questions.

"Scientific research shows that a simple cotton mask can capture 28% of the particles, ordinary medical masks can block 40% to 80% of the particles, N95 masks can block more than 95% of the particles." Yang Xiyao said that the principle of anti-mite masks is not blocked But electrostatic adsorption. When the particles are very small, the physical barrier has almost no effect on them. The particulate matter passes through the filter layer and is adsorbed by the filter layer under the effects of Brownian diffusion, filter layer interception, inertial collision, and gravity sedimentation.

For how to choose an anti-mite mask, Yang Xiyao stated that the haze has a low atmospheric pressure and there are a lot of dust, germs, and other harmful substances suspended in the air. These substances can be directly sucked into the human body and adhered to the aspirator and alveoli, making some Exacerbation of disease or worsening of chronic disease. Therefore, it is necessary to wear masks for protection. However, not all masks can play a preventive effect. Common masks and disposable non-woven masks currently on the market have a certain blocking effect on dust and large particles, but they are not suitable for smog, PM2.5 or bacteria, viruses, etc. Microbial particles, protective effect is not enough, it is recommended to buy anti-mite level N95, N99 masks.

Zheng Hui Xin'an Evening News, Anhui Web Daxuan client reporter Ye Xiao

â–¡ Tips for hazy weather notes

1. Open the window less. Many people are accustomed to window ventilation, but if the haze does not spread throughout the day, is the window opening or closing the doors and windows? Experts believe that when there is a fog, it is not advisable to open the window sooner or later. It is best to wait for the sun to come out and open the window.

2. Appropriate vitamin D supplementation. Due to insufficient UV radiation and lack of sunshine during the season, vitamin D production in the human body is insufficient, and some people may also experience mental laziness and depression, and may supplement some vitamin D when necessary.

3. Eat light and drink plenty of water. Foggy food should choose light and easily digestible and vitamin-rich foods, drink plenty of water, eat more fresh vegetables and fruits, so that not only can add a variety of vitamins and inorganic salts, but also play a role in lungs and dryness, expectorant cough The role of spleen and kidney. Eat less irritating foods, eat more pears, wolfberry, oranges, oranges and so on.