Beijing releases air quality measuring instruments to nearly 300 households

In the continuous haze days, it is relatively better to hide doors and windows behind closed doors at home. But whether indoor air quality can be reassuring? Yesterday, we learned from the National Indoor Environment and Environmental Products Quality Supervision and Inspection Center that large-scale surveys of indoor pollution will be conducted in 100 cities by tens of thousands of families starting this week. As the first station, air quality measuring instruments have been distributed to nearly 300 households. Relevant person in charge said that the focus of this survey was on indoor PM2.5 concentration and formaldehyde pollution. It is expected that by May of this year, the first white paper on indoor air quality in China will be issued based on the survey data.

According to Dai Zizhu, the drafter of the National Indoor Air Quality Standard, the main victims of indoor air pollution are the elderly, children, pregnant women, and people with respiratory diseases. However, the penetration rate of household air purifiers in China is only 0.1%. The penetration rate in Japan and the United States It reached 17% and 27% respectively. However, many consumers do not know how to choose and use air purifiers.

In addition, there is no universal type air purifier, consumers need to buy according to actual needs. If it is a newly-decorated living room, it is necessary to take into account the removal efficiency of formaldehyde and other pollutants and PM2.5. If it is a house that has lived for many years, it will focus on the removal effect of PM2.5. The type of purifier technology should also pay attention to, careful selection of a single high-pressure dust collector technology purifier, easily lead to excessive indoor ozone content. In addition, negative oxygen ion purification may increase comfort, but it has no effect on the improvement of pollution.

Source: Beijing Daily

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