Masks that actively kill the new crown virus, purification and disinfection cards, blue light disinfection spray guns, hypochlorous acid disinfection tablets... The new crown virus killing artifacts and disinfection artifacts that have emerged on e-commerce platforms recently are black technology or IQ tax?
Beijing Youth Daily reporter conducted an investigation on this.
Antibacterial and antiviral are two concepts. Masks to kill the new crown virus are hype
Because the protective effect is better than medical surgical masks and disposable medical masks, N95 masks are very popular.
It is worth mentioning that masks that claim to actively kill the new crown virus have also begun to appear on e-commerce platforms.
According to the merchant's introduction, the nano-copper anti-virus inactivated mask can be used for 5 days, and the four-layer nano-silver mask can be used continuously for 7 days.
In terms of price, 10 nano-silver masks are 28 yuan, 30 are 81 yuan; nano-copper masks have three packaging specifications, "January pack" has 5 pieces, and the price is 69 yuan; "February pack" is 10 pieces, sold The price is 129 yuan; the "half-year pack" is 30 pieces and the price is 389 yuan.
The merchant said, "Both of these masks can actively kill the new coronavirus, and are suitable for any strain."
Among them, the nano-copper mask product display page claims that the suppression rate of the inactivated new crown is as high as 99.97%, and the current monthly sales volume has exceeded 1,000 copies.
The merchant of this product said that their product is far beyond the medical grade. This mask has three layers. The first layer is a nano-copper ion inactivation virus coating, which can kill the new crown virus; the second layer is a nano-filtration layer; The third layer is SSS grade sterile anti-allergic non-woven fabric.
Regarding the effect of the product, some buyers said that they could not prove it, but they were using it with the mentality of trying it out, and wore it for at most two days.
Is this mask really reliable?
When the N95 mask is temporarily out of stock, can it be used as a substitute?
Regarding the protective mask products on the market that claim to be able to actively kill the new crown virus, Jin Xiangyu, a professor and doctoral supervisor at the Textile College of Donghua University, told the Beijing Youth Daily reporter that no matter whether the outside is sprayed with nano-silver, copper ions, copper oxide, etc., it can at most be effective. to the appropriate antimicrobial effect.
At present, the clinical effectiveness of this type of mask product against the new crown Omicron virus has not been fully verified, and it does not have clinical significance. The effectiveness and safety of this type of product have yet to be verified.
Antibacterial and antiviral are two completely different concepts. Antibacterial generally refers to the process of killing bacteria or hindering the growth and reproduction of bacteria and their activity by chemical or physical methods.
Antiviral drugs refer to the pathways used to resist or destroy viral infection, such as directly inhibiting or killing viruses, interfering with virus adsorption, preventing virus penetration into cells, inhibiting virus biosynthesis, inhibiting virus release, or enhancing host antiviral capabilities, etc.
"The so-called mask that can kill the new crown virus is a commercial hype." Jin Xiangyu explained that this type of mask is mainly added to the surface layer of the mask through particle blending, powder/solution spraying, etc., which causes particles to fall off and enter the respiratory tract. potential for further risks.
In fact, the State Food and Drug Administration has also named "antibacterial and antiviral" non-medical masks.
In April of this year, the official website of the State Food and Drug Administration issued a consumption reminder for non-medical masks that claimed to be "antibacterial and antiviral" that appeared on the market, saying that such masks generally add various antibacterial agents through blending, spraying, etc. The main additives are Including nano-titanium dioxide, nano-silver, quaternary ammonium salt, copper ion/copper oxide, Chinese medicine extract, etc.
The safety and effectiveness of such products should be fully researched and verified.
Under the premise that the clinical effectiveness of such mask products has not been fully verified, adding antibacterial agents will introduce new risks.
At present, in the pre-market evaluation of medical devices, the risk-benefit ratio of continuous and long-term use of such products is insufficient and does not have significant clinical significance.
The effect of antibacterial card and disinfection card is difficult to distinguish. Improper use may cause safety problems
A reporter from the Beiqing Daily found that on the e-commerce platform, there are products called "air purifiers" that you can carry with you, and the price ranges from more than ten yuan to three hundred yuan; Antibacterial card; the protection time is different, some claim that a piece of antivirus and antibacterial card can protect for one month, and some claim that it can protect for 60 days or 90 days; the marked antibacterial rate or sterilization rate is between 99% and 99.9% between.
Beiqing Daily reporters randomly consulted 8 shops, and most of the merchants said that this product is a kind of powder, and the main active ingredient in it is chlorine dioxide. Purify the surrounding air.” Some businesses clearly stated that it can kill the new crown virus, while others were more cautious, saying that they could not guarantee it 100%, but only played an auxiliary role.
Professor Jin Xiangyu is also skeptical about the actual effect of this product.
He introduced that chlorine dioxide is a strong oxidizing agent, which reacts violently with many substances and is highly corrosive.
Chlorine dioxide disinfectant is a commonly used oxidant for the prevention and treatment of new coronaviruses, but it needs to be mixed with water to prepare a liquid with a suitable concentration.
Chlorine dioxide is the main disinfectant sprayed by medical staff and community personnel, but you must pay attention to safety when using chlorine dioxide disinfectant. You should wear gloves and masks to avoid high-concentration disinfectant contact with the skin and inhalation of the respiratory tract.
Luo Haotong, a staff member of the health department of the Ziyang City Center for Disease Control and Prevention in Sichuan, publicly stated that chlorine dioxide has a good disinfection effect and relatively low residues.
However, some "disinfection cards" advertised that "chlorine dioxide is released when exposed to air" is obviously wrong. Chlorine dioxide can only play a role in aqueous solution, and it is not the release of chlorine dioxide that can disinfect.
Yang Renguo, an infection doctor at the Sichuan Provincial People's Hospital, also said that wearing a mask is still an effective protection method, and one should not blindly believe in the efficacy of some "disinfection cards".
These so-called omnipotent "disinfection cards" are not only difficult to distinguish, but may also cause safety problems if used improperly.
Fire Tips: Buy Blue Light Disinfectant Spray Guns With Caution
In terms of household disinfection, mobile sterilizers, lazy sterilizers, etc. have also become popular products on the Internet, and a blue-ray disinfection spray gun is a hot seller on the Internet.
Press the button of the disinfection gun to spray mist alcohol, and the product also claims to have a blue light to assist in safe disinfection.
Qi Xinglong, deputy director of the News and Propaganda Section of the Fire Rescue Detachment of Tongzhou District, Beijing, reminded that such items should be purchased carefully.
He said that, on the one hand, when the alcohol is sprayed out, each atomized alcohol is in full contact with oxygen. In winter, it is dry and dry, and down jackets, chemical fiber materials, and woolen materials are prone to static electricity during friction. , Mars, it is easy to ignite alcohol and catch fire.
On the other hand, the blue light emitted by the two so-called "ultraviolet light alcohol disinfection guns" that it bought for experiments is not ultraviolet light, so the disinfecting ability of blue light is also questionable.
Moreover, ultraviolet germicidal lamps will cause damage to the eyes and skin of the human body, and acute photosensitivity damage may occur in severe cases.
Therefore, it is not recommended to use ultraviolet germicidal lamps for disinfection at home.
Qi Xinglong said that from the perspective of fire safety, compared with spraying alcohol, it is recommended to use alcohol to wipe the surface of the object, or use alcohol gel to control the alcohol in a small area, and the fire hazard will be much smaller.
Alcohol is not suitable for large-scale splashing of anti-virus.
If necessary, 84 disinfectant or other disinfectants can be used.
At present, more common disinfectants such as 84 disinfectant, 75% alcohol, and hypochlorous acid disinfectant should also pay attention to the usage scenarios.
For example, 84 disinfectant can be used to disinfect the surfaces of tables and chairs (wiping), the ground (spraying, mopping), and rags (soaking).
Chlorine-containing disinfectants such as 84 disinfectant cannot be mixed with other cleaning agents, otherwise chlorine gas will be produced, which will endanger human health.
75% alcohol is generally suitable for surface disinfection of hands, skin, and small items such as mobile phones, keys, and tablets, and can be wiped 1-2 times.
Hypochlorous acid disinfectant has relatively high safety, low toxicity and danger to human body and environment, and can be used for hand and article disinfection.
However, due to its relatively low concentration, it cannot completely disinfect dirty environments and items, nor can it be used for immersion disinfection.
What needs to be reminded is that my country has not yet issued national standards and industry standards for hypochlorous acid disinfectants, only group standards, so the quality of hypochlorous acid disinfection products sold on the market is uneven.
When purchasing, you can go to the national online record information service platform for disinfection products to inquire and purchase regular products with record registration.
Text/Reporter Song Xia