Anti-PM2.5 masks are selling at a high price but the "question mark"

With the gradual implementation of new air quality assessment standards across the country, anti-PM2.5 masks have become popular online products. PM2.5, which is particulate matter with a diameter of less than or equal to 2.5 microns in the atmosphere, is also referred to as lung-infiltrating particulate matter. Its small particle size, rich in a large number of toxic and hazardous substances and long residence time in the atmosphere, the transmission distance, and thus greater impact on human health and atmospheric environmental quality.

Anti-PM2.5 mask online high prices

You only need to enter “mask PM2.5” in the search box of some famous shopping websites to find more than 1,000 related products. Many online shops have even advertised advertisements such as “covering health, keeping away from smog!” and “PM2.5 filtration efficiency is greater than 99%”. Some hot models sold up to tens of thousands of monthly sales.

"These days, masks are too good to sell! The best-selling masks have sold more than 20,000 in the past half-month," said a person in charge of an online shop selling masks. According to the data released by Taobao Index, a group of masks bearing the name “anti-PM2.5” has increased sales by 40% in the last 7 days, among which the purchasing volume in Jiangsu Province ranks first in the country. At the same time, these masks are several times more expensive than regular masks. Ordinary masks are priced between 1.5 yuan and 10 yuan, and many masks that claim to be "anti-PM2.5" are between 20 yuan and 40 yuan. In order to prove that masks can block PM2.5, businesses have developed their own high-tech. There is a self-proclaimed microfiltration technology--ultimate denier electret-meltblown polypropylene nonwoven fabric. The surface of this material has a micro-electrostatic field and it has an adsorption and trapping effect on PM2.5 particles in the air. There are also some outdoor protective masks that filter PM2.5 up to 99%. They said that they added activated carbon to their masks. They not only adsorbed PM2.5 particles but also absorbed toxic and harmful gases such as formaldehyde and secondhand smoke.

Really useful? Experts say it doesn’t fly

"To say masks will prevent PM2.5, I think this statement is not very reliable. From the technical point of view, ordinary masks still can not stop PM2.5, but even the highest standards of N95 masks did not achieve this effect. "Lin Cangzhou, a global Chinese materials scientist, said.

This website solemnly declares: This article is the reprint of the online media, only represents the author's point of view, has nothing to do with this site. If news articles and comments infringe your legal rights, please call us and we will handle it in a timely manner.