Talk about daily disinfection

The people of the whole country are working together to fight the epidemic in the past month. At present, all walks of life have begun to return to work one after another. Driving may greatly reduce the chance of virus infection, and the disinfection of private cars is also a topic of concern to everyone. Fortunately, I have a winner, with five-star active and passive security measures from the outside to the inside ~

However, it makes me sad to see such a scene on the Internet. This is because I chose to disinfect my car with diluted 84 disinfectant and spray it directly on the area covered with genuine leather, which led to the fading of the interior. Everyone must pay attention and don't do it again ~

Let's find out what the hell COVID-19 is this time.

Coronavirus is a kind of enveloped lipophilic virus, and it is also the most easily killed microorganism as far as current cognition is concerned. ? But not all disinfectants are useful. Choose the right ingredients and pay attention to the concentration.

What the hell is that disinfectant?

Disinfectants are used to kill pathogenic microorganisms in the medium to make them harmless, remove pathogenic microorganisms from the human body, cut off the transmission route of infectious diseases, and achieve the purpose of controlling infectious diseases.

Various hand sanitizers, disinfectants and effervescent tablets with disinfection function in the market can kill pathogenic microorganisms such as bacteria and viruses and block their spread in the environment. ? | But there are specialties in the industry, and not all disinfectants can destroy COVID-19. ? According to the Diagnosis and Treatment Plan for Pneumonia Infected in novel coronavirus (Trial Fourth Edition), "Coronavirus is sensitive to ultraviolet rays and heat, and fatty solvents such as ether, 75% ethanol, chlorine-containing disinfectant, peracetic acid and chloroform can effectively inactivate the virus, but chlorhexidine cannot effectively inactivate the virus".

Then let's take stock of effective disinfectants ~

Chlorine-containing disinfectant: refers to a disinfectant that dissolves in water to produce hypochlorous acid with microbiocidal activity, and its microbiocidal effective components are often represented by available chlorine. Hypochloric acid has a small molecular weight, which easily spreads to the surface of bacteria, penetrates the cell membrane and enters the interior of bacteria, causing protein oxidation of bacteria and death of bacteria. ? But either the name contains the word "chlorine" or chlorine-containing disinfectant. In daily life, 84? Disinfectants, bleaching powder, chlorine-containing disinfectant powder or chlorine-containing effervescent tablets are all chlorine-containing disinfectants. Chlorine-containing disinfectants are highly irritating and can be used in plastic containers after direct dilution to avoid contact with skin, mouth and nose.

Note: Chlorine-containing disinfectant can not be used with toilet cleaner at the same time, which is easy to produce toxic gas; It is also not recommended to use it with alcohol at the same time, and the disinfection effect may be weakened or even produce toxic gases. This disinfectant is a strong oxidizing disinfectant with irritating chlorine smell, which has a good killing effect on bacteria and viruses, and belongs to an efficient disinfectant.

According to novel coronavirus's diagnosis and treatment plan, 75%? Alcohol can effectively kill viruses. Therefore, under the general disinfection requirements, such as ordinary daily necessities, medical alcohol can be used for disinfection. It is best to buy medical alcohol directly, and it is difficult to master the concentration by blending it yourself. ? What is the specific concentration of medical alcohol? 75%? Alcohol. Alcohol can denature protein, so it can kill microorganisms. However, the killing effect of low-concentration alcohol is poor, while high-concentration alcohol will make the protein on the surface of microorganisms coagulate too fast, and alcohol cannot penetrate into it, so the effect is poor. Practical research has found that alcohol with a concentration of about 75% has a strong killing effect. Many hand sanitizers also contain alcohol, but the content of hand sanitizer is generally above 60% to be effective. Door handle, mobile phone screen, computer keyboard, remote controller, switch, etc. It can be disinfected with 75% alcohol or alcohol cotton pads. ? It is not recommended to spray alcohol on the mask for disinfection. When alcohol volatilizes, it will take away water, and when it is reused, the isolated virus is easily inhaled. It is also not recommended to spray large areas of clothes and rooms with alcohol for disinfection. After spraying or using high-concentration alcohol, you can't cook, make a phone call or smoke immediately, which is easy to cause burning and explosion.

Families with children should be careful not to wipe their hands directly with medical alcohol, which may easily cause alcohol allergy; Alcohol should be kept out of the reach of children to avoid taking it by mistake; For older children, parents can explain the characteristics of alcohol to their children and educate them not to play with alcohol, let alone light it with fire.

Peroxide disinfectants are widely used, among which chlorine dioxide, hydrogen peroxide and peracetic acid are representative substances. Note: Be sure to use it after dilution. Their advantage is that there is no residual toxicity on the articles after disinfection. ? Peroxide disinfectant is very oxidizing, and all kinds of microorganisms are very sensitive to it, which can kill all microorganisms. ? Hydrogen peroxide with sufficient concentration can effectively kill novel coronavirus and other germs, and it is also a safe and environmentally friendly disinfectant. ? It should be noted that hydrogen peroxide is unstable and needs to be stored away from light. It needs to be used as soon as possible after opening. If used for a long time, it will cause certain harm and irritation to eyes and respiratory mucosa!

There are many hand sanitizers and disinfectants in the market, and the main effective components are p-chlorophenol, benzalkonium chloride, cetrimonium bromide/chlorhexidine, etc. ? Although this disinfectant also contains chlorine, this chlorine is not chlorine. ? For example, the most common drip and Veracruz, their active ingredient is p-chlorophenol. Although it is widely used, such as household cleaning and disinfection, clothing disinfection and mite removal, and even contact with skin, the sterilization rate is 99.999% after dilution, and it is always available at home, but it is ineffective in COVID-19.

There are also some hand sanitizers containing benzalkonium chloride and cetrimonium bromide/chlorhexidine. But scientists have confirmed that these disinfectants can't kill COVID-19 effectively, but they are effective for common bacteria.

The "Diagnosis and Treatment Plan for Pneumonia in novel coronavirus (Trial Fifth Edition)" announced that coronavirus is sensitive to heat and ultraviolet rays. Let's talk about whether these two physical disinfection methods are applicable at home. ? High-temperature cooking: High-temperature disinfection can not only effectively kill viruses, but also be highly operational in the home environment. Academician Li Lanjuan, a member of the senior expert group of the National Health Planning Commission, said that the virus itself is not very resistant to the outside world, with a ratio of 56? Centigrade? 30? A few minutes later, the coronavirus died. Then for heat-resistant items, such as tableware, towels, glasses and other items, can you cook them? 30? Minutes or steam? 5? Minutes to achieve the purpose of disinfection. ? Suitable for towels, some children's toys, tableware and other cotton cloth. Boiling can coagulate and denature the protein of bacteria. Generally, 15 ~ 20 minutes, the boiling water surface must overflow the cooked items. ? Some heat-resistant baby products can be wiped with 75% alcohol cotton pad.

Ultraviolet lamp and air sterilization: Although the virus is sensitive to ultraviolet rays, we do not recommend families with children to use ultraviolet rays for disinfection. Because there are many risks in the operation of ultraviolet light, for example, when turning on the ultraviolet light, people and pets need to avoid it, otherwise it will hurt eyes and skin, and it will also produce toxic and harmful substances such as ozone, so it needs to be ventilated in time afterwards. After all, the child is out of control. What if it's not handled properly? Others will ask, as a natural ultraviolet ray, can sunlight kill the virus? On the one hand, the irradiation temperature can't reach? 56? Centigrade? On the other hand, the ultraviolet intensity of sunlight can't reach the intensity of professional ultraviolet lamps, so sunbathing can't kill the virus. But drying bask in the quilt and clothes is still recommended, because ultraviolet rays will make the virus live shorter and more fragile.

For children's products, different materials and types need different disinfection methods: Bottles, nipples, gutta percha, plastic toys and other high-temperature resistant items can be disinfected by boiling at high temperature after washing. ? Plastic toys, metal toys and other items that are not resistant to high temperature can be soaked in medical alcohol or wiped and disinfected after cleaning. 5~ 10? Minutes. ? Children's clothes or plush toys can be cleaned with a certain proportion of disinfectant to achieve disinfection effect. ? Children's books, picture books and other items that are not resistant to moisture can be exposed to the sun? 6? Disinfect for more than hours, but be careful not to overlap when drying. ? When using disinfection products, be sure to avoid contact with children's eyes and mouth. After disinfection, it is best to wipe it thoroughly with clean water, or try to let it stand for a period of time, so as to avoid the disinfectant remaining within the reach of the child, thus contacting the child's skin, especially the hands, and the disinfectant may be eaten by mistake.

Having said that, the virus spread of this epidemic is not only droplet spread, but also contact spread. For us, it is of course unrealistic to completely clean the interior of the whole car, so we should know which key parts of the car need disinfection.

May everyone be safe!