Will the indoor formaldehyde concentration increase when the temperature is high in summer?

After summer, people will obviously feel that there are some peculiar smells in the room for no reason. Even at home, there will be physical reactions such as hot eyes or sore throat, which are actually caused by formaldehyde. Summer happens to be the most rampant season for indoor formaldehyde volatilization, so everyone should guard against indoor air pollution in summer, especially the harmful gas formaldehyde. The formaldehyde emission varies greatly in different seasons throughout the year. The probability of indoor formaldehyde exceeding the standard is only about 10% in winter and about 30% in spring and autumn, but the probability of indoor formaldehyde exceeding the standard will be as high as 80% in high temperature period in summer. It can be seen that temperature is the main reason that affects indoor formaldehyde concentration. Let's talk about the topic of high-temperature formaldehyde release!

First of all, the indoor temperature is generally high in summer, which will lead to the accelerated volatilization of formaldehyde in decoration materials and furniture, that is, the formaldehyde inside these pollution sources will be transferred to the indoor air, which will be slower in normal seasons, faster in hot days and higher in indoor humidity in summer. Because formaldehyde is very soluble in water, there will be a lot of formaldehyde in water molecules in the air at this time, which can also directly lead to indoor formaldehyde.

Secondly, the volatilization point of formaldehyde is 19 degrees Celsius, and the indoor temperature can generally reach above 25 degrees Celsius in summer. Every time the indoor temperature rises by one degree Celsius, the rate of formaldehyde volatilization from these pollution sources will increase by about 0.4 times. When the indoor temperature rises to 30 degrees Celsius and the indoor humidity reaches 50%, even if the original indoor formaldehyde does not exceed the standard, the indoor formaldehyde concentration will reach about 0.22 mg per cubic meter. If the indoor temperature is as high as 35 degrees Celsius, the indoor formaldehyde concentration will double, because the release rate of formaldehyde will also double. Of course, in addition to temperature and humidity, the release speed of formaldehyde will also be affected by factors such as air pressure.

Finally, the materials used for decoration in each household are different in environmental protection, so the indoor formaldehyde concentration is also different. The more luxurious the decoration, the more materials are used, and the indoor formaldehyde concentration is bound to be higher, mainly due to the effect of formaldehyde superposition and release, so environmental protection materials cannot represent environmental protection decoration!