We will not stay at the time of renovation, because the formaldehyde content in the newly renovated house is very high, it will hurt our body, so let us know how much formaldehyde can not live , and What are the ways to remove formaldehyde?
First, the formaldehyde content standard
1. The National Standard of the People's Republic of China "Hygienic Standard for Formaldehyde in the Air of the Room" stipulates: The maximum allowable concentration of formaldehyde in the living room air is 0.08 mg/m3 (0.08 mg/m3). Test method: chemical analysis method of spectrophotometer, on site Air samples are taken and analyzed in the laboratory. It is characterized by accurate numerical values ​​and strong anti-interference. It is the only standard test method for indoor indoor formaldehyde.
2. The National Standard of the People's Republic of China "Solid Flooring" stipulates: The formaldehyde emission of Class A solid wood composite floor is less than or equal to 9 mg/100 g (9mg/100g), and the formaldehyde emission of Class B solid wood composite floor is more than 9mg-40mg. /100g (9mg-40mg/100g) Test method: Perforation extraction method, take 100 grams of test piece by chemical extraction method to determine its formaldehyde content.
3. "Technical requirements for national environmental labeling products - artificial wood panels": The amount of formaldehyde released from artificial boards should be less than 0.20 mg/m3 (0.20 mg/m3); the amount of formaldehyde released from wooden floors should be less than 0.12 mg/cubic Rice (0.12mg/m3). Detection method: the climate chamber method, the plate samples are placed in the climate chamber according to the requirements, the air samples are taken out from the climate chamber, and the formaldehyde content is determined by chemical analysis.
4. Indoor air quality testing measures whether the house meets the health requirements of human settlements. The standard is GB/T18883-2002 indoor air quality standard.
5. Indoor environmental pollutants detection Civil construction and indoor decoration engineering environmental protection inspection and testing, the standard is GB50325-2001 civil construction engineering environmental pollutants control specifications.
Second, how to calculate formaldehyde over standard?
1, according to GBT/18883-20025 indoor air quality occupancy standard has been formaldehyde, for example, can not exceed 0.10 mg per square, if the family has a baby or a weaker patient, formaldehyde 0.08 is better. Formaldehyde exceeds the standard odor and discomfort; 0.1-..40
2, according to GBT/18883-20025 indoor air quality occupancy standard, formaldehyde has not exceeded 0.10 mg per square, if there is a baby or a weak patient in the family.
Formaldehyde 0.08 is better.
3, formaldehyde exceeds the standard odor and discomfort; 0.1-..40 below will not have a clear feeling, when the formaldehyde reaches 0.4-0.6, it can stimulate the eyes to cause tears, can also cause throat discomfort and pain. At higher concentrations, it can cause nausea and vomiting, cough and chest tightness, wheezing and even pulmonary edema; when it reaches 30mg/m3, it will immediately cause death.
Third, formaldehyde over standard treatment method
1. Ventilation of the window, the decoration is just over, the smell of the new house is serious, and the pollution must be several times or even several times exceeding the standard. Therefore, the first one or two weeks, the best way is to open the window for a long time, through air convection, Pollutants in the indoor air are discharged to the outside. In addition, it is also possible to use an electric fan to assist in accelerating the flow of indoor and outdoor air. This method can quickly reduce the amount of harmful substances in the indoor air.
2, the use of activated carbon, after effective ventilation, indoor air pollution has been greatly reduced, so the current focus of governance should be turned to address the source of slow release of indoor pollution, to ensure long-term stability of the home health environment. Due to indoor decoration pollution, the formaldehyde in the newly renovated house will exceed the standard. The first year after the home decoration, especially the first half of the year, is a strong release period of harmful gases such as formaldehyde and benzene. The general release period is 3-15 years. This is slow. The release process determines that the means or product to control pollution must meet two conditions: A, long-term effective; B, can directly act on the source of pollution.
The above is the knowledge about formaldehyde introduced by Xiaobian. We should have a new understanding of formaldehyde through the above articles. I hope that the friends of the decoration will be useful. If you want to know more about the decoration, please Continue to pay attention to the decoration home network.
More related wonderful reading:
How to get formaldehyde after the renovation of the new house? Precautions when removing formaldehyde
What is the fastest addition to formaldehyde? What are the damages of formaldehyde to us?
What about formaldehyde in the room? What are the treatment methods?
What harm does formaldehyde have on the human body? The most effective way to remove formaldehyde?
How to get formaldehyde in a newly renovated house? How to judge the degree of formaldehyde pollution
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