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Shandong Disineer Disinfection Science and Technology Inc

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Contact:Kevin Liu




Disinfectant Is Used To Kill The Vector On The Pathogenic Microorganisms

  Disinfectant is used to kill the vector on the pathogenic microorganisms, to achieve harmless requirements of the preparation, it is different from antibiotics, it is the main role in disease prevention is the eradication of pathogenic microorganisms outside the human body, cut off infectious diseases The transmission of the way to achieve the purpose of controlling infectious diseases. People often call them "chemical disinfectant", according to the level of its role can be divided into sterilizers, highly effective disinfectant, in the disinfectant, inefficient disinfectant.

  The most commonly used chemical disinfectants according to their chemical properties can be divided into nine categories:

  Chlorine disinfectant is a disinfectant that dissolves in water to produce hypochlorous acid with microbicidal activity, and its microbiological active ingredient is often expressed as available chlorine. Hypochlorite molecular weight is small, easy to spread to the bacterial surface, and penetrate the cell membrane into the bacteria, the bacterial protein oxidation leading to bacterial death. Chlorine disinfectants can kill a variety of micro-organisms, including bacterial propagules, viruses, fungi, Mycobacterium tuberculosis and the strongest bacterial spores. Such disinfectants include: inorganic chlorine compounds such as sodium hypochlorite (10-12%), bleaching powder (25%), bleaching powder (mainly calcium hypochlorite, 80-85%), trisodium phosphate (3- 5%); organochlorine compounds such as sodium dichloroisocyanurate (60-64%), trichloroisocyanuric acid (87-90%), ammonium chloride T (24%) and the like. Inorganic chlorine is unstable, susceptible to light, heat and moisture, loss of its active ingredients, organic chlorine is relatively stable, but soluble in water are not stable. Their microbicidal effect is obviously affected by the use of concentration, the impact of time, in general, the higher the effective chlorine concentration, the longer the longer the better the effect of disinfection. The lower the pH, the better the sterilization effect; the higher the temperature, the stronger the microbicidal effect; but when the organic matter (such as blood, saliva and excrement) is present, the disinfection effect can be significantly reduced. At this point should increase the concentration of disinfectant or prolong the role of time. But the high concentration of chlorine disinfectant on the human respiratory mucosa and skin have a significant stimulating effect on the items have corrosion and bleaching, extensive use can also pollute the environment. Therefore, the use of specific instructions should be read, according to different microbial contamination of the selection of the appropriate concentration of substances and the role of time, in general, kill the virus can be effective chlorine 1000mg / L, the role of 30min. Such disinfectants are commonly used in the environment, the surface of goods, utensils, drinking water, sewage, excreta, garbage and other disinfection.

  Peroxide-based disinfectants: Because of their strong oxidizing ability, a variety of micro-organisms are very sensitive to all microorganisms can kill. Such disinfectants include hydrogen peroxide (30-90% range), peracetic acid (18-20%), chlorine dioxide and ozone. They have the advantage of disinfection after the items do not leave residual toxicity, but because of chemical instability is required to use the existing, the use of inconvenient, and because of its strong oxidizing ability, high concentrations can stimulate, damage the skin and mucous membranes, corrosive items The Which peracetic acid commonly used in virus contaminated items or skin disinfection, the general disinfection of goods can be used when 0.5%, disinfection of the skin can be used 0.2-0.4% of the time for 3min. In the absence of the environment can be used for air disinfection, with 2% peracetic acid spray (calculated by 8ml / m3), or heating peracetic acid (calculated by 1g / m3), the role of 1 hour after the window ventilation. Chlorine dioxide can be used for surface disinfection products, the concentration of 500mg / L, the role of 30min. Ozone is also a strong oxidizing agent, dissolved in water when the bactericidal effect is more obvious, commonly used in water disinfection, drinking water disinfection when the amount of ozone is 0.5-1.5mg / L, the amount of ozone in water 0.1-0.5mg / L to maintain 10min Can meet the requirements of disinfection, poor water quality, should increase the amount of ozone added, 3-6mg / L.

  Aldehyde disinfectants: including formaldehyde and glutaraldehyde. This type of disinfection is an active alkylating agent acting on the amino, carboxyl, hydroxyl and mercapto groups in the microbial protein, thereby destroying the protein molecules and causing the microorganisms to die. Formaldehyde and glutaraldehyde can kill a variety of micro-organisms, because of their skin and mucous membranes of the human body to stimulate and curing, and can make people sensitized, it can not be used for air, utensils and other disinfection. Generally only for medical equipment in the hospital disinfection or sterilization, and disinfection or sterilization of the items had to use sterile water to the remaining disinfectant rinse before use.

  Alcohol disinfectant: the most commonly used is ethanol and isopropyl alcohol, it can coagulate the protein, leading to microbial death, are intermediate levels of disinfectant, can kill bacterial propagules, destruction of most lipophilic viruses, such as herpes simplex virus, B Hepatitis virus, human immunodeficiency virus and so on. Alcohol microbicidal effects can also be affected by organic matter, and because of volatile, should be soaked disinfection, or repeated wipe to ensure its role in time. Alcohols are often used as solvents for certain disinfectants and have synergistic effects. Commonly used concentration of 75%, according to foreign reports: 80% ethanol has a good inactivation of the virus. In recent years, there are many domestic and foreign compound alcohol disinfectant, these products are used for hand skin disinfection.

  Iodine-containing disinfectants, including iodine tincture and iodophor, which are halogenated by microbial proteins to die. Can kill bacterial propagules, fungi and some viruses. Can be used for skin, mucosal disinfection, the hospital is commonly used in surgical hand sanitizer. General iodine tincture concentration of 2%, povidone-iodine concentration of 0.3-0.5%.

  Phenolic disinfectants: including phenol, cresol, halogenated phenol and phenol derivatives, commonly used coal phenols soap, also known as Sul, its main component of methyl phenol. Halogenated phenol can enhance the bactericidal effect of phenol, for example, trichloro-based diphenyl ether can be used as a preservative has been widely used in clinical disinfection, corrosion.

  Ethylene oxide, also known as ethylene oxide, is a highly effective disinfectant, can kill all microorganisms. Because of its strong penetration, often used in leather, plastic, medical equipment, supplies after packaging disinfection or sterilization, and no damage to most items can be used for precision instruments, precious items of disinfection, especially for paper Color does not affect, often used for books, text file material disinfection.

  In addition, there are biguanes and quaternary ammonium salts disinfectants, which are cationic surfactants, with sterilization and decontamination, the hospital is generally used for non-hazardous items of cleaning and disinfection, can also be used for hand disinfection, its Ethanol can enhance its bactericidal effect as a skin disinfectant. Since these compounds can alter the permeability of bacterial cell membranes, they are often compounded with other disinfectants to increase their bactericidal effect and bactericidal rate.