How to prevent PM2.5 in daily life

PM2.5 gradually into the people's vision, because of its greater harm to the human body, therefore, we should do a good job in the daily life of the measures to prevent the harm brought by PM2.5.

We should first do a foggy day to go out wearing masks, prevent duwu by the nose and mouth into the lungs, morning exercise habits, should stop outdoor activities.

SARS period in 2003, a mask of the mask of N95 medical masks to become the darling of the market. Compared with the former two kinds of masks, this kind of protective mask in the dust aspect is much more professional. The N95 is based on the American Standard, which is divided into nine major categories of three types of medical masks. N on behalf of non oily particles, and another R, P type of oil particles on behalf of. Non oil particles including dust, cement dust, mist, welding smoke and microorganism; oil particles include oil mist and smoke, coke oven smoke etc.. Each model is divided into three kinds of filtering efficiency levels were 95%, 99% and 100%.N95 means “ filtration efficiency of non oil particles anti-dust masks &rdquo 95%;. Anti-dust masks standards in China no division so fine, but N95 is still the lowest standards such anti-dust masks.

It is now believed that the greatest threat to human health in the atmosphere is particulate matter (PM10) with a diameter of 10 microns or less, especially for particulate matter (PM2.5) with a diameter of 2.5 microns or less. According to the size of small particles, the filtering effect of N95 is worthy of affirmation. In the production standard of N95, the test sample of particulate matter is sodium chloride aerosol with a diameter of 0.1-0.5 microns, and the filtration rate of qualified N95 mask for this kind of aerosol should be above 95%. So, if anti-dust masks properly worn N95 or higher level, even if the air quality index (AQI) report of severe pollution, we can go out a little more peace of mind.