Do all disinfectants work? What disinfection methods are considered over sterilization?

Our body is exposed to the air and is in constant contact with microorganisms in the air, and the body has certain defense mechanisms and defense capabilities, but many times we are still inevitably contaminated with bacteria and viruses. There are many different types of disinfectants on the market, but are the disinfectants with chlorine in their names chlorine-containing disinfectants, and how can you tell them apart? Generally speaking, most of the chlorine-containing disinfectants in their names are chlorine-containing disinfectants, but we need to analyze their ingredient list and distinguish whether the working principle of the disinfectant is the effect of chlorine according to the active substances in the ingredient list.

Our use of chlorine-containing disinfectants to sterilize is actually the use of some strong oxidants oxidation or chlorination, such as hypochlorous acid, hypochlorous acid has strong oxidation, can destroy the structure of bacteria, play a bactericidal role, but chlorine has many different valencies in the compound, only when the valency of chlorine is relatively high, it has oxidation. For example, there are some chlorine-containing substances, such as salt, with the molecular formula NaCl, which does not have a disinfecting effect, because the chlorine element does not act as an oxidizing agent at this time. Therefore, we need to analyze the specific composition of different types of disinfectants when distinguishing them.

We should be clear that it is not that the higher the chlorine in a disinfectant, the better the disinfectant effect, we need to analyze what active ingredients this disinfectant produces when used, and the more active ingredients, the best effect. We often see some precautions on the disinfectant bottle, some disinfectants should not be mixed, because it is possible that the ingredients of these two disinfectants will chemically change with each other, so that the active ingredients in them will act as other substances, so that the disinfectant will completely lose its effect.

Some disinfectants are acidic when used, such as some chlorine-containing disinfectants, and some are alkaline, and the two must be used separately, because acid-base neutralization will make the disinfectant ineffective. We should also pay attention to the use of disinfectants when using them, so as to avoid other chemical reactions that produce toxic substances and endanger health. In fact, although disinfectant is a daily product, but it is not used every day, if you have to smell the smell of disinfectant every day, it is not good for people's body, so it is okay to use disinfectant once a week, or once every half a month, and some families will even use it once a month, plus the concentration needs to be diluted, so it is generally said that buying a bottle of disinfectant can be used for a long time.

If the shelf life is too short, it is likely that it will expire after not being used for a long time, so the length of the shelf life is also a point of concern when choosing a disinfectant for daily use.

Not all disinfectants have the effect of disinfection, but the more active ingredients in the disinfectant, the better their disinfection effect will be.

We use disinfectants in our daily life, and then 84 disinfectant, iodine wine, and alcohol disinfectant, but they are not easy to use, and it is best not to use too high disinfectant if you use it at home, because the higher the purity of the disinfectant, the sterilization effect is not so good, and the taste is still very pungent, and there will be discomfort.

Not all disinfectants are useful, some viruses are also disinfectants that cannot be killed, or there are still residues, I think such as excessive use of disinfectant or frequent use of ultraviolet lamps, these disinfection methods are over-disinfected, because in daily life, the virus is not so strong stationery, as long as simple disinfectant water or high temperature disinfection can be.

The incorrect use of chemical disinfectants is that peracetic acid can be used to soak and sterilize metal instruments. Because peracetic acid has an oxidizing effect, it should not be used for the immersion of metal devices.

Chemical disinfectants generally refer to disinfectants. Disinfectants are used to kill pathogenic microorganisms on the transmission vector, make them harmless, eliminate pathogenic microorganisms outside the human body, cut off the transmission route of infectious diseases, and achieve the purpose of controlling infectious diseases.

Disinfectants can be divided into sterilizers, high-efficiency disinfectants, medium-potent disinfectants, and low-efficiency disinfectants according to their level of action. Sterilants can kill all microorganisms to meet sterilization requirements, including formaldehyde, glutaraldehyde, ethylene oxide, peracetic acid, hydrogen peroxide, chlorine dioxide, chlorine, copper sulfate, quicklime, ethanol, etc.

High-efficiency disinfectants can kill all bacterial propagules (including mycobacteria), viruses, fungi and their spores, etc., and also have a certain killing effect on bacterial spores, meeting the requirements of high-level disinfection, including chlorine-containing disinfectants, ozone, methylhydantoin ureas, double-stranded quaternary ammonium salts, etc.

Medium-effect disinfectants can only kill microorganisms such as mycobacteria, fungi, viruses and bacterial propagules to meet disinfection requirements, including ozone-containing disinfectants, iodine-based disinfectants, alcohol-based disinfectants, phenolic disinfectants, etc. Inefficient disinfectants can only kill bacterial propagules and esterophilic viruses to meet the requirements of disinfectants, including quaternary ammonium salt disinfectants such as benzalkonium bromide, and biguanide disinfectants such as chlorhexidine (chlorhexidine).

Answer]: c Commonly used disinfectants: oxidants such as hydrogen peroxide, peracetic acid, potassium permanganate, carbolic acid, lyso, hexachlorophenol and other phenols, ethylene oxide, beta-propionolactinate, propylene oxide, methyl bromide and other alkylating agents, surfactants such as Xinjie Erfen, Xiaoxingdong Poison Jing, Dufen, alcohols, aldehydes, haloquifers and their compounds, heavy metal salts, dyes and acids and alkalis.

The factors affecting chemical disinfectants are: the degree of microbial contamination on the disinfected items, the temperature, concentration and use of the disinfectant, and the presence or absence of chemical antagonistic substances, all of which will affect the effect of disinfectant disinfection, and should be paid attention to when disinfection.