PM2.5 mask standard will introduce activated carbon mask to prevent PM2.5

Near autumn and winter, the concentration of pollutants in the atmosphere has increased, and many people with sensitive physique have put on a "PM2.5" mask. However, some people have doubts about the quality and efficacy of some PM2.5 masks. According to reports, the PM2.5 mask standard will be introduced soon.

The reporter recently visited several large-scale shopping malls and wholesale markets, and also logged in multiple shopping websites. He found that masks marked with “PM2.5” are widely seen and are classified into anti-particulate, anti-formaldehyde, anti-odor, and activated carbon types. And other models. A closer look shows that the protective principle of each mask is different.

From a closer look, it is not difficult to find that many masks do not have the name of the factory name and raw material components. The packaging is only a simple plastic bag, and there is a strange smell. In a wholesale market, the reporter also found that some booth owners recommended PM2.5 masks printed with a variety of colorful cartoon patterns on the front. Some activated carbon masks are also labeled with "anti-PM2.5" and are known to adsorb tiny particles in the air. In fact, the production process is only applied a layer of activated carbon powder on the filter material, the principle of action is a simple and easy physical activity adsorption.

Experts told reporters that activated carbon masks can effectively adsorb harmful gases such as benzene and formaldehyde in the air, but they do not provide an effective barrier to fine particles, let alone PM2.5 particles. In addition, activated carbon itself is also a source of particulate matter that is very likely to be inhaled by the wearer and can be harmful to persons suffering from chronic respiratory diseases or frailty. Usually, activated carbon masks are mainly used for indoor decoration, odor deodorization, and the like, and have no protection against PM2.5.

The person in charge of the Green Shield PM2.5 mask manufacturer approved by the Nilsson Laboratories and the National Labor Protection Products Quality Supervision and Inspection Center told the reporter that the company’s patented PM2.5 mask uses a dedicated microfiltration filter, which can reach 99 With a filtration rate of %, the pressure difference of the filter is reduced by about 20 times compared with the conventional filter, the flow resistance is significantly reduced, the air permeability is greatly improved, and the technical limitations of the conventional mask breathing difficulty are solved.

It is reported that the damage of air pollution to human health is mainly manifested as "two fine". One is a fine particle represented by PM2.5, and the other is a bacterial virus represented by H1N1, H5N1, MRSA, and the like. Fine particles, bacteria, etc., are inhaled through the respiratory route and cause respiratory and visceral diseases. At present, the "anti-bacterial daily masks" and "anti-bacterial daily non-woven masks," the two standards have been approved by the quality supervision department, will be expected to upgrade to industry standards or national standards.

China Labor Insurance Network