Nowadays, the living environment of Chinese people is good, but at the same time, they are slowly losing the natural space environment that we depend on for survival. The outdoor and indoor environment is one of the topics that we are paying more and more attention to. Next, let’s talk about family decoration: when does the newly decorated house move in?
Pollutant still exceeds the standard one year later
Formaldehyde: large core board, composite board and density board used in home decoration will use a lot of adhesives in the production and manufacturing process, and new furniture, wall and ground decoration will also use adhesives. Formaldehyde will be released in all links where a large number of adhesives are used. In addition, chemical fiber carpets, plastic floor tiles, paints, etc. also contain a certain amount of formaldehyde. The investigation shows that the average concentration of formaldehyde in the room is 2.4mg/m3 5 days after decoration, 0.87mg/m3 1 month later, 0.25mg/m3 6 months later, and 0.087mg/m3 12 months later. The maximum allowable concentration of formaldehyde is 0.08mg/m3 according to China’s indoor air health standard. It can be seen that the average indoor formaldehyde concentration in 5 days after decoration of modern families is 30 times of the standard value, more than 3 times of the standard value in half a year after decoration, and the indoor formaldehyde concentration in 1 year after decoration still fluctuates above and below the standard value.
Ammonia: according to the data, the average concentration of indoor ammonia is 0.56-1.51mg/m3 one month after the decoration of the building with waterproof layer, 0.25-0.56mg/m3 half a year after the decoration, and 0.10-0.27mg/m3 one year after the decoration. The average concentration of indoor ammonia is 1.58-1.98mg/m3 one month after the decoration of buildings using antifreeze, 0.55-1.06mg/m3 half a year after the decoration, and 0.15-0.25mg/m3 one year after the decoration. The standard value of ammonia gas in China’s indoor air quality standard is 0.20mg/m3. The above data shows that the indoor ammonia concentration generally exceeds the standard within one year after the building is decorated with waterproof layer and antifreeze.
Benzene series: according to national regulations, indoor air standards are benzene ≤ 0.11mg/m3, toluene ≤ 0.20mg/m3, xylene ≤ 0.20mg/m3. The investigation results of modern city decoration buildings show that the average concentration of benzene is 0.17mg/m3 and toluene is 0.35mg/m3 when the doors and windows are closed; the average concentration of benzene is 0.11mg/m3 and toluene is 0.25mg/m3 in the first year of decoration; the average concentration of benzene is 0.035mg/m3 and toluene is 0.11mg/m3 in the third year of decoration; the average concentration of ethylbenzene, xylene and styrene is 0.11mg/m3 The content is also quite high, generally reaching 0.05 ~ 0.20mg/m3. The results show that when the doors and windows are closed, the average concentration of indoor benzene series is 5-10 times of that of outdoor in one year after decoration, and 2-4 times of that of outdoor in three years after decoration.
VOC: in the process of interior decoration, VOC mainly comes from paint, coating and adhesive. The content of VOC in general paint is 0.4-1.0mg/m3. Due to the strong volatility of VOC, in general, it can volatilize 90% within 10 hours after paint application, while VOC in solvent can only release 25% of the total amount in the process of paint air drying. In the decoration, the concentration of indoor VOC often exceeds the standard, especially in the improper decoration. The monitoring of VOC in indoor air shows that the bedroom with more than 1 / 3 of people’s stay time is the most polluted, and the concentration of VOC in wardrobe is the highest.
Try to decorate in summer and Autumn
Half a year after decoration, formaldehyde, benzene and other pollutants in the room will be reduced by 80%; one year after decoration, the concentration of formaldehyde, benzene and other pollutants will basically fall to the standard value. Therefore, it is suggested that the newly decorated houses should be ventilated for a certain period of time, and it is best to move in after more than one year if conditions permit. If it is not possible to air the room for a long time, pay attention to ventilation during check-in, and try to reduce the situation that doors and windows are closed for a long time.
Try to choose environmental protection decoration materials and simplify decoration. Even if all the materials used are environmentally friendly, they can not be moved in immediately, because we should pay attention to the superposition effect of harmful substances. The trace harmful substances in furniture, plus the trace harmful substances in latex paint, plus the trace harmful substances in plates and floors, become a large number of harmful substances.
Try to choose decoration in summer and autumn. Higher temperature and dry air are conducive to the volatilization and diffusion of benzene and its derivatives.
It is also one of the effective ways to purify the air to put green plants in the room. Flowers and plants not only release oxygen, but also absorb or absorb harmful substances. It is reported that rose and rose can absorb sulfur dioxide, osmanthus has the function of dust absorption, Mint has the function of sterilization, ivy and iron tree can absorb benzene, evergreen and Daisy can absorb trichloroethylene, Chlorophytum, aloe and tiger tail orchid can absorb formaldehyde.
According to the final suggestion of the small edition, it is better to have the air environment testing unit with national measurement certification and indoor air quality testing qualification to test the indoor environment before moving in. Only when the test results meet the national indoor environment standards, can you safely move in. In case of over standard phenomenon, it shall be treated in a timely manner, and the indoor environment professionals shall be invited for guidance during treatment, and the treatment products and equipment shall not be selected blindly. If you want to know more about what kind of good knowledge of children’s protective fence, this website has a lot of relevant knowledge for you to find, hope to help you oh!