Formaldehyde is only available in new decorations? In fact, the old house is not "safe" either!

　　Formaldehyde is only available in new decorations? In fact, the old house is not "safe" either

　　Xu Bin, deputy of the School of Environmental Science and Engineering of Ji University, said that the release of formaldehyde has a long time limit. For example, the wooden boards in the home begin to release formaldehyde after production, and the release period is 15 years. "The experiment just now supports this, so don't think that the furniture will be fine after three to five years."

　　In addition, the volatilization of formaldehyde changes with temperature. The season with the largest amount of formaldehyde release is summer.

　　Can air purifier remove formaldehyde? How to choose?

　　There are many kinds of air purifier in the market, which can monitor the indoor formaldehyde concentration while removing formaldehyde. However, the accuracy of the instrument depends on the sensor's ability to accurately recognize it. Some sensors recognize volatile compounds (such as the smell of orange peel) as formaldehyde. "It doesn't mean the concentration of formaldehyde, it can also easily lead to the misunderstanding about formaldehyde.’’ Xu Bin said.

　　Different kinds of air purifiers have different "purification" principles. If you choose the wrong one, it will cause secondary pollution. Xu Bin said that the traditional "high efficiency filter" is very good at removing fine dust, but it has no effect on formaldehyde. Another type of purifier uses charcoal to adsorb formaldehyde. In addition, the photocatalyst-led purifier will cause secondary pollution, and the effect of removing formaldehyde may not be good.

　　Therefore, when selecting an air purifier to remove formaldehyde, the indoor air quality should be continuously and accurately monitored to reflect the value of each pollutant. At the same time, pay attention to the material, performance and life of the filter, and consider whether the filter can be replaced regularly.

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