Home environmental protection is at the source of the floor partner omnipotent effect is exaggerated

Recently, some readers asked whether a floor-selling floor-selling partner has a practical purification function. According to reports, as long as the floor mate is laid under the floor, it can remove harmful substances such as formaldehyde, benzene, TVOC, ammonia, etc., and can achieve 10 years of effectiveness. Some consumers think that the utility is a bit exaggerated, but there are also consumers who want to try it. Experts said that similar products may be exaggerated, and consumers should establish a correct awareness of home environmental protection, and should not rely too much on purification products.

market outlook

Introducing Xuanhu products "all-round"

The reporter searched for a floor companion on a large shopping website, which is in line with the consumer's description of two brands of products, the price ranged from a dozen yuan to tens of yuan per square meter. Some sellers sell dozens of pieces a month.

After opening the product introduction page, the reporter found that although the two products have different names, the utility and working principle of the two products are roughly the same. First of all, these products can be placed directly on the lower part of the floor, above the moisture-proof floor mat. Because it is very thin, it will not affect the normal paving of the floor. Secondly, the merchants have introduced the effects of removing indoor formaldehyde, benzene and other harmful substances, and simultaneously preventing insects and insects, inhibiting bacteria and eliminating odors. Again, both brands have mentioned the use of healthy titanium technology, which can react with harmful substances to produce water and carbon dioxide, with no toxic side effects, and its work is not affected by light and temperature. From the introduction, this product is very "all-round". The merchant also introduced that this kind of products can be used not only under the floor, cabinets, furniture, even new shoes and wallets can be used to remove pollution and odor.

As for why the product is laid under the floor, the explanations of the two brands are exactly the same: such products can purify pollutants within 1 meter on the ground. Contaminants such as formaldehyde have a larger molecular weight than air and deposit on the floor surface. Therefore, 1 meter on the ground is the most polluted area, which is why this product is chosen.

The sellers of both brands also promised in the introduction that their products are valid for 10 years. Some sellers also showed inspection reports from various agencies, but the pictures were too small to see the specific content.

Experts explain doubts whether it is practical or not

Is this kind of product really as intriguing as it is introduced? According to the seller's introduction, the reporter verified the experts on the main functions of formaldehyde and antibacterial. Some experts said that it is impossible to deny that such products really have the effect of purifying the air, but some of the functions are still exaggerated.

The principle of removing formaldehyde is difficult to say

The seller introduced: "The product uses healthy titanium nano-composite catalyst purification technology, healthy titanium technology, and the utility has been used for more than ten years."

Expert Interpretation: Can titanium remove formaldehyde? Zheng Sujiang, deputy director and technical director of the Antibacterial Materials Testing Center of the Institute of Physics and Chemistry of the Chinese Academy of Sciences, said that titanium dioxide is generally used in the field of photocatalysis, which can decompose harmful substances such as formaldehyde, but requires certain lighting conditions. Nano-titanium does not decompose formaldehyde at all. As for the “healthy titanium nanocomposite catalyst purification technology” mentioned by the seller, Zheng Sujiang said that he had never heard of it. “Maybe I am ignorant.”

Another industry expert told reporters that he also learned about this product and felt that the working principle could not be said. If you use the more mature titanium dioxide now, there is no light under the floor. And if other active substances are used, the duration of action is limited.

As for the validity period of up to ten years, industry experts said that to verify this statement, we must use scientific data to speak. The reporter found that many sellers provided the data of the authoritative testing organization for the function of formaldehyde removal, antibacterial and toxicity of the floor partner in the website, but did not mention the durability of the use. "There is no credit for the argument that there is no data support."

There is no basis for the pollution-hit area

The seller said: "The average molecular weight of air is 29, and the molecular weight of the main pollutants in the indoor environment is generally greater than this value, such as formaldehyde (HCHO) is 30, ammonia (NH3) is 31, and benzene (C6H6) is 78. Therefore, Most of the polluting gases produced by furniture, flooring, paints, coatings and other interior materials will accumulate near the surface of the earth, and the range is probably within 1 meter according to experts' calculations."

Expert interpretation: Industry experts said that there is currently no data and research to support this view. It is unscientific to simply derive from the molecular weight. If someone insists on this idea, then experimental data is needed to prove that the concentration of the contaminant is related to the change in height.

Working principle is self-contradictory

The author said: "The product is driven by oxygen energy, forming hydroxyl radicals, superoxide anion radicals, negative oxygen ions and other groups with strong oxidative activity, comprehensive long-term adsorption, filtration, decomposition, purification of formaldehyde and other toxic chemicals Substance and can adsorb and degrade many harmful gases and odors."

Experts interpret: Although the first two hydroxyl radicals and superoxide anion radicals can interact with pollutants, they are very active, which means they can't "work" for a long time. So, how is the ten-year work done?

Negative oxygen ions can be antibacterial, and have been refuted by experts. This time, the business also called negative oxygen ions can remove harmful substances such as formaldehyde, Zheng Sujiang said that negative oxygen ions can only give people a comfortable feeling, and did not decompose formaldehyde. "Only strong oxidants can decompose formaldehyde. It is also a reducing agent like formaldehyde." In addition, experts say that negative oxygen ions should be obtained in an unnatural environment, and ionization reactions are required. Ordinary products, this substance cannot exist and is always released. "After the general rain, especially after the thunderstorm, there will be more negative oxygen ions, which is caused by ionization." "The concept is hype."

Antibacterial efficacy is not dry enough

The seller said: "Under the floor, it often becomes a dead angle of bacteria that breeds bacteria and produces mildew. Although it threatens the indoor environment, it is difficult to take care of. The brand's floor partner has a killing rate of 99%, and the mildew of the comprehensive mold is zero. level."

Expert interpretation: Zheng Sujiang pointed out that the inhibition rate reached 99%, indicating a strong antibacterial effect. However, for the dry use environment of Beijing, it does not mean much. “Under the floor is a sanitary corner. For areas with long-term humidity and wet periods of more than 8 months, it is of great significance to use such products. However, the air in Beijing is dry for a long time. If it is a geothermal room, the floor is still a heating pipe. So, the floor is even more dry." Therefore, the antibacterial function of this product is more "chicken" for consumers in dry areas such as Beijing.

As for the product, the "long mildew grade for the comprehensive mold is zero grade", Zheng Sujiang explained, this means that the product itself will not grow mold. Put it on the floor, will the floor not grow mold? Zheng Jiang said that this is only a corollary. The test is only for the product itself. "After use, the floor will not be moldy, it is hard to say." In addition, it also introduces that the wood mold is generally easy to mold. Because most of the laminate flooring is made of urethane aldehyde, the chance of mold is small, "because formaldehyde itself can inhibit bacteria."

Expert advice

Home environmental protection is at the source

Many consumers have the idea that "indoor decoration pollution can be completely solved by relying on purification products." Yan Zhijiang, director of the Environmental Functional Materials Research Office of the China Building Materials Science Research Institute, said that consumers should establish a correct concept - although the use of decorative materials with certain air purification functions is beneficial to the adjustment of the indoor environment, but not only used, The pollution will disappear. “It is hoped that by applying a purifying product to a wall, it will absorb the pollution in the whole room. That is a better wish. The current technical level cannot be achieved.” For example, the amount of formaldehyde released indoors is higher than that of diatom mud. Indoor pollution is simply impossible to clean up. Many products have conditions of use and service life. “For example, the filter element of an air purifier should be replaced frequently, and the adsorption capacity of diatom mud will also be attenuated.”

Therefore, Zhai Zhijiang suggested that if you want to control indoor air pollution problems, it is best to choose building materials with good environmental performance during renovation. In addition, pay attention to the superposition effect of pollutants, and do not over-renovate. The best way to reduce indoor air pollution is to open the window. In addition, some experts said that many manufacturers will use the lack of professional knowledge of consumers to exaggerate product features. Therefore, when purchasing a purification product, it is necessary to examine its inspection report in detail. “Every theory spoken by the business should be supported by theory and data.”

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