After Mr. Lin's new house was ventilated and dried for more than half a year, the couple moved into the new house with their 4-year-old daughter. Only one month after moving into the new house, Mr. Lin's daughter suddenly developed symptoms such as persistent high fever and cough, and was diagnosed with acute leukemia by the hospital, and her 4-year-old daughter died due to ineffective treatment.
After his daughter was diagnosed with acute leukemia, Mr. Lin commissioned the municipal environmental monitoring station to monitor the air in the master bedroom of the new house, and according to the monitoring report, the formaldehyde content was 0.39mg per cubic meter, which exceeded the prescribed standard by four times.
How much is the formaldehyde content exceeded? Do you know the normal range?
Formaldehyde concentrations above 0.08 ppm (0.1 mg/m) are harmful to health
Based on the results of the epidemiological investigation, the World Health Organization considers formaldehyde concentrations below 0.08 ppm (0.1 mg/m) to be relatively safe for humans. As formaldehyde concentrations increase, the range of effects on humans and animals increases.
Human and animal studies have shown that formaldehyde may irritate the upper respiratory tract and eyes, skin, and gastrointestinal tract at certain exposure levels.
The U.S. National Registry of Toxics and Diseases has summarized the health effects of formaldehyde at a range of concentrations on humans and experimental animals when inhaled.
Why does formaldehyde at home always exceed the standard repeatedly?
According to research, there are 2 main factors for excessive formaldehyde in the home space:
First, improper materials were used in the decoration,
As we all know, the quality of decoration materials is very different, often some inferior materials of harmful substances will exceed the standard, especially formaldehyde, if with some inferior accessories, the release of formaldehyde will be very large, which is also the most likely to cause formaldehyde to exceed the standard. Therefore, we must choose environmentally friendly materials when decorating to reduce the release of formaldehyde from the source.
The second is excessive decoration,
Many people have put a lot of effort into the decoration of new houses, and they can't wait to "stuff" all the good things in the world into their homes, which will inevitably lead to excessive decoration. Even if environmentally friendly materials are used, but environmentally friendly materials are not equal to "zero formaldehyde", once a large number of them are used, formaldehyde will be superimposed on each other and exceed the standard. Therefore, it must be a good and reasonable planning and decoration, and it can be simple.
We usually refer to the formaldehyde release period as "3-15 years", which refers to the time of formaldehyde release in the board, which may be completed within 3 years at the earliest and 15 years at the latest.
This range value does not have to be fully released within 15 years.
Therefore, the length of the formaldehyde release cycle is mainly determined by the furniture production process, edging technology and new house decoration technology. According to the current popular furniture production cost and process, the continuous release time of formaldehyde at room temperature is 3-15 years.
Many people mistakenly think that formaldehyde is far away from us, as an expert environmental experts pointed out: a few inconspicuous things in the home are the "source" of formaldehyde, which should be avoided, but unfortunately too many uninformed people are still buying at home, and it is recommended to throw away or replace them.
"Formaldehyde Giant" was exposed: Don't be reluctant to throw away these "4 items"!
1. Man-made panels
Man-made board is a board made of scraps generated by wood processing and chemical adhesives. Common man-made panels include plywood, blockboard, particleboard, MDF, etc.
Plywood (plywood) is often used to make furniture that needs to be bent and deformed, the performance of blockboard is sometimes affected by the material of the core, and particleboard is also called particulate board, bagasse board, and solid wood particle board.
Artificial panels such as particleboard and particle board are made by gluing and pressing the sawdust together, so a lot of glue is used, and the raw material of glue is formaldehyde. After all, there is a saying that "no formaldehyde, no glue".
Of course, to a certain extent, there are also some man-made boards made of formaldehyde-free glue such as MDI, but the cost of such boards is generally much higher than that of urea-formaldehyde resin/phenolic resin/melamine resin/. Among them, urea-formaldehyde resin formaldehyde volatilization is the most serious, and it accounts for 80% of the amount of man-made panels.
2. Curtains and other fabrics
Don't think that curtains and other fabric materials are formaldehyde-free, then this idea is very wrong, these items contain formaldehyde mainly because of the need to use dyes, and anti-wrinkle and other finishing agents, so everyone is buying fabric and other things, it is best not to choose the color is more bright, which can also reduce the content of indoor formaldehyde.
3. Wallpapers
Many families will choose a lot of wallpaper when choosing to decorate the bedroom, which contains a certain amount of formaldehyde, and when pasting wallpaper, there is a glue that must be used, and there is a lot of formaldehyde where there is glue.
If you buy a wallpaper that is not of good quality, it will have benzene and toxic gases in addition to formaldehyde.
4, Citrus
Cabinets, including but not limited to wardrobes, shoe cabinets, and cabinets, are also the hardest hit areas of formaldehyde.
After all...... It's all plates.
And the so-called panel furniture is not such a luxury as "a whole log".
They are usually composite panels made of shredded wood/sawdust/wood fibers/planks/strips, and various adhesives.
How to judge the excessive formaldehyde? There are six signs indoors, be sure to move out!
1. After getting up in the morning, I have symptoms such as dizziness, nausea, and stuffiness, and I am weak, a bit like a fever, but if I measure my temperature, I find that the temperature is normal, and it is not caused by a cold, so I need to consider other possible causes.
2. Although no one usually smokes, I always feel uncomfortable in my throat and nose, as if something has stimulated me, my breathing is very uncomfortable, there seems to be foreign bodies in my respiratory tract, and there are even symptoms of poor breathing.
3. When you are at home, you will feel very tired, and your throat will be very dry, and your head will be dizzy. But after going out, these symptoms disappear immediately, which does not mean that you like to go outside, but because the formaldehyde concentration at home is very likely to exceed the standard.
Xiaobian recommends that you use professional formaldehyde removal products, which can quickly and effectively remove formaldehyde, but when we choose formaldehyde removal products, we need to choose carefully to ensure that we choose products with guaranteed quality. The following is to introduce you to a few products, all of which are brands with good reputation and evaluation, and you can refer to them if you need them:
1: Olvway formaldehyde scavenger:
Allova formaldehyde scavenger adopts a new "amino acid + photocatalyst" formaldehyde removal technology, which combines the characteristics of physical removal and chemical decomposition, and provides an innovative solution for the rapid and efficient degradation of formaldehyde molecules. The core is to integrate amino acid technology with photocatalyst technology to better deal with harmful formaldehyde in indoor air. Through adsorption and chelation, amino acid technology effectively adsorbs and fixes harmful gas atoms and molecules such as formaldehyde on the surface of the material, improves the degradation and removal efficiency, avoids its re-release into the indoor air, and ensures the improvement of indoor air quality.
Alvis Formaldehyde Scavenger: The ingredients are safe and reliable, free of oxidants, alcohol and fragrances, very safe for home use, the ingredients in the product will react with the air and convert into carbon dioxide and water. Tested by professional testing institutions, the efficiency of this product to remove formaldehyde is as high as 91%, which is a favorable player for removing formaldehyde. And don't worry about stains or marks.
2: Activated carbon:
Activated carbon itself has a certain effect on the adsorption of harmful substances and volatile harmful gases, so it can be used to effectively adsorb formaldehyde, especially in the newly renovated indoor environment or in the case of excessive formaldehyde, it is an effective choice.
Three: Yiya formaldehyde deep scavenger: The composition of this formaldehyde scavenger is mild, which effectively improves the free state and the formaldehyde inside the plate, and the decomposition products are pollution-free.