Yangzhou Jingwanjia Household Contamination Testing Co., Ltd. jointly launched the 3.15 free formaldehyde measurement campaign. Since accepting the registration, the citizens have participated enthusiastically. On that day (February 22nd), 50 free testing places have been filled. Yesterday, formaldehyde free testing activities were officially launched. The reporter followed Cao Shengming, the general manager of Jingwan Company, to enter the home of two households. The formaldehyde was detected on the spot and formaldehyde levels were found to be excessive.
Upon entering Mr. Zhu's home, Cao Shengming took out a test instrument. Formaldehyde detection is divided into four steps, one is to configure the detection solution, the second is to collect air samples, the third is colorimetry, and the fourth is to read data. This tester has a built-in computer that can read data directly.
The reporter saw that after the doors and windows of the bedroom were closed, Cao Shengming first took out a test tube. After the test solution was dispensed, a powder was added to it, which was then poured into a bottle and a rubber tube was attached. Cao Shengming said that this process is to collect air samples and it takes about a quarter of an hour.
After a quarter of an hour, Cao Shengming entered the bedroom again. He first poured the collected air into the cuvette, added a reagent and placed it in the colorimetric cell in the instrument after a few minutes. Cao Shengming said that according to the depth of the color, it can be judged whether the formaldehyde in the house exceeds the standard.
After a while, the result came out: Mr. Zhu's home has a formaldehyde content of 0.26 mg/m3. Then at the Miss Chen home, the formaldehyde test result was 0.11 mg/m3. Cao Shengming explained that according to national standards, formaldehyde content per cubic meter of air is safe within 0.1 mg; 0.1 mg/m3–0.2 mg/m3 is a slight excess; 0.2–0.35 mg/m3 is a moderate excess. Over 0.35 mg/m3 is severely exceeded. According to this standard, Mr. Zhu’s family has been moderately overweight, and Ms. Chen’s family is slightly overweight.
Cao Shengming said that with the increasing complexity of modern decoration, more and more formaldehyde content has been exceeded in newly renovated homes. According to their statistics, of the 100 households that were inspected, only 30 or more households newly decorated their homes did not exceed their formaldehyde levels, and the formaldehyde content of more than 60 households exceeded their standards.
The harm of formaldehyde is self-evident, how can we do a newly renovated house formaldehyde is not exceeded? Cao Shengming introduced that if formaldehyde is not exceeded, two principles should be taken into consideration: the selection of materials is good, and the decoration is as simple as possible.
"To shut down the good material selection is to select building materials that meet the national standards, and not to buy or use building materials that do not meet the standards." Cao Shengming said that this principle we all understand, the question is how to choose. "This requires everyone to look at it and compare it more." He said that they can check the Internet before the renovation to see if the building materials meet the relevant national standards.
"The second principle is neglected by many people. Decoration should not be over-complicated and the easier it is to decorate," he said. The more complex the decoration, the higher the formaldehyde content. Because, any material containing glue contains formaldehyde, such as artificial board, wood board, floor, glue, white latex, wallpaper, paint and so on. The more complex the decoration, the more these materials are used, the higher the formaldehyde content.
“A lot of people have mistakenly thought that as long as good building materials are selected, formaldehyde in the house will not exceed the standards.†Cao Shengming said that this is actually a big misunderstanding.
Why do you say that? "Single items of building materials do not exceed the standard, does not mean that the overall does not exceed the standard." He said that some people's bedroom furniture stacked too much, wooden floors, cabinets, beds, which contain formaldehyde, even if these building materials are in line with national standards, but in a closed In the space, a number of formaldehyde-containing furniture are stacked together, which can also cause the formaldehyde concentration in the bedroom to exceed the standard. “A lot of people think that after the new house is properly ventilated and ventilated for three or four months, it will be possible to stay in.†Cao Shengming believes that this kind of understanding has a certain degree of partiality and is not entirely correct. “There are three kinds of damage to human health caused by decoration pollution: formaldehyde, benzene, and xylene.†He said that the volatility of these three chemical components is not the same, and the most volatile is xylene, which can be volatilized in three months. Completed; followed by benzene, 6-12 months can be volatilized; the most volatile is formaldehyde, volatile period up to 3-15 years.
“If the formaldehyde does not exceed the standard, it can be accommodated after 3-5 months of renovation.†He said that if formaldehyde is not excessive, benzene and xylene will not exceed the standard, and they can stay in 3-5 months. . If formaldehyde is severe, it needs to be remedied.
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