According to some surveys, indoor air pollution is much more serious than outdoor air pollution, usually 2 to 5 times, and 100 times in special cases.
'Indoor air pollutants come from a wide range of sources. The biggest source of pollution comes from building materials, decoration materials, quality of furniture, as well as carbon dioxide, pathogenic microorganisms, etc.. Li Hongfan, director of the Green Indoor Committee of the China Interior Decoration Association, said. According to some surveys, indoor air pollution is much more serious than outdoor air pollution, usually 2 to 5 times, and 100 times in special cases.
In 2017, relevant indoor air testing departments showed that more than 90% of the harmful air in China's newly renovated living rooms were seriously exceeded. Among them, Beijing, Shanghai, and Tianjin were sampled in the three major cities. The proportion of formaldehyde exceeded the standard was 79%, 82%, 81%. .
In 2013, the Beijing Children's Hospital doctor spent more than half a year. Through the consultation of the children with leukemia who came to see the doctor, nearly 90% of the children had been renovated within half a year. The World Health Organization has already classified formaldehyde as a class. Carcinogens, and clear warning: Formaldehyde and cancer, especially childhood leukemia have a correlation. Although there are many reasons for leukemia, it is definitely not good to sleep in a room with excessive formaldehyde.
Jin Jiuyin Shi, after the beginning of autumn, is about to usher in the decoration season, how long can formaldehyde exist after renovation?
Studies by the University of Yokohama in Japan have shown that formaldehyde, benzene and other toxic gases can be released for 3 to 15 years. Lu Zhixin, from the Jining City Center for Disease Control and Prevention in Shandong Province, found that the formaldehyde in the air was still 7.55% after 3 years of renovation. , at a higher level.
Li Hongxia and others from the Department of Preventive Medicine of Zunyi Medical College have published a paper "Progress in Toxicity Research on Formaldehyde", saying that formaldehyde is irritating to mucous membranes; it has toxic effects on cardiovascular system, endocrine system, digestive system, reproductive system, and kidney; Carcinogenicity, especially on the nasal cavity, nasopharynx, lung carcinogenesis has been recognized.
Song Guangsheng, director of the National Indoor Interior Environment and Environmental Product Quality Supervision and Inspection Center, said that the most common source of formaldehyde pollution in the home is the sheet, especially the urea-formaldehyde glue contained in the wood-based panel. Most of the furniture on the market now needs to be veneered, painted, sealed. Urea-formaldehyde glue is often used in many processes, and formaldehyde is derived from it. In addition, the preservative used to store wood also contains formaldehyde. Zhang Yiping, director of the Building Environmental Testing Center of Tsinghua University, said that if the space is relatively closed, formaldehyde The evaporation time will be very long.
Decoration should put health first
The decoration is to have a more comfortable living environment, to put health first! Experts have given these suggestions.
The decoration is as simple as possible. Some people pursue luxury when they are decorating, but they don't know that this often brings more formaldehyde. Dr. Liu Jinling, a respiratory doctor of the Children's Hospital of Zhejiang University School of Medicine, chose a simple and environmentally friendly decoration. Doors, tables, chairs, cabinets are all solid wood, only a layer of varnish, the wall is also simple white, only latex paint, no ceiling on the ceiling. No decoration for more than a year, has been ventilated, Please check the indoor air, the formaldehyde content is only one tenth of the national standard.
The board is selected E1 or above. The decoration material solid wood is more environmentally friendly. If you choose the board, choose the environmental protection level. At present, the environmental protection grade of China's board is E0, E1, E2, and it is best to choose E1, E0 grade board. The release of formaldehyde in wood-based decorative materials and their products from May 1st (GB18580-2017) stipulates that the formaldehyde emission from wood-based panels and their products shall not exceed 0.124 mg/cubic. Meter, the limited mark is E1, the standard formaldehyde emission of 'E0' furniture is up to 0.05 mg/m3.
Keep ventilation. Do not enter immediately after new decoration. It is best to ventilate for about 6 months. After you check in, you should open the door and window as much as possible. The volatilization of formaldehyde is related to room temperature, and the volatilization of formaldehyde increases during summer and winter heating. Open the window. Usually in some closed spaces, such as drawers, put the activated carbon bag in the cabinet, and replace it regularly.
Before you check in, it is best to measure formaldehyde. Before you go, especially at home, there are pregnant women, old people, and children's families. It is best to ask professional organizations to test formaldehyde. It is better to meet the national safety standards and stay. It is necessary to remind that there are some formaldehyde sold online. Test paper, tester, ranging from tens of dollars to several hundred dollars, these measurements are not accurate. It is best to have professional CMA/CAL qualified unit testing.
