[Comprehensive] Anti-fog masks absorb large amounts of pollutants and must be replaced in time

Masks are a must-have weapon for many citizens to prevent smog. But is the anti-haze mask that is on sale in the market really useful? What is the principle of anti-mite? What is the stress of wearing a mask? You may wish to listen to the professional advice of Yang Xiyao, director of the Sensation Office of the Anji sophomore hospital.

Director Yang introduced that hazy weather has low air pressure, suspended air, and contains a large amount of harmful substances such as dust and germs. These substances can be directly sucked into the human body and adhered to the aspiration path and alveoli, causing acute illnesses and chronic diseases to increase. Therefore, people should wear masks to protect themselves when they go out. However, it is not a matter of masks that can provide anti-fog and haze effects. In fact, the principle of anti-fogging masks is not "blocking" but electrostatic adsorption. When particles pass through the mask filter layer, they are absorbed by the mask filter layer under the effects of Brown diffusion, filter layer interception, inertial collision, and gravity sedimentation.

According to related studies, masks made of simple cotton can only capture 28% of the particles. Ordinary medical masks have been scientifically tested to block 40% to 80% of particles, and N95 masks can capture more than 95% of particles. According to Yang Xiyao, at present, ordinary masks and disposable non-woven masks sold on the market have a certain blocking effect on dust and large particles, but for smog, PM2.5 or microbial particles such as bacteria and viruses, the protective effect is insufficient. of. For smog weather, it is recommended to purchase masks with N95 (above 95%) N99 (above 99%).

"Wearing masks for a long time, the external absorption of particles and other large amounts of pollutants will increase the resistance to sucking; on the other hand, the masks will also absorb bacteria, viruses, etc. in the outgassing. Therefore, experts recommend that wearers should replace them in due course. Masks.” Yang Xiyao said that smog is a “health killer” for patients with cardiovascular disease. Patients suffering from bronchial asthma, chronic bronchitis, and other sucking tract diseases should avoid outdoor exercise as much as possible so as not to induce episodes of chronic disease or worsening. Harmful substances in smog can cause irritation and damage to the sipping path, and can easily cause infections such as infections in the upper canthal airway. When the air is fogged, the oxygen content in the air is low, and it is easy to cause cardiovascular and cerebrovascular diseases. It is best to wear anti-fog and haze. Masks. In addition, the hazy weather as little as possible to open windows, appropriate vitamin D, diet light, drink plenty of water, go back and change clothes, wash your nose and mouth. (Xu Chaozhong)