防疫科普 | 正確消毒，這些“雷”不要踩！
Coronavirus Prevention Tips | Do not Disinfect Improperly!
Disinfection is one of the effective ways of cutting the spread of the virus. But inappropriate sanitization will not inactivate virus, it may harm our body or the environment. Therefore, here are some misconceptions about home sanitizing that need to arouse public awareness.
No. 1 Excessive use of disinfectants while neglecting daily cleaning
Cleaning is the primary way of epidemic prevention at home, plus some disinfection. Avoid excessive disinfection because of the panic. If there is no coronavirus case in the community, home visiting by people from outside or suspected cases in self-quarantine, everyday disinfection would be unnecessary. It’s recommended to keep air flowing and environment cleaning at home and wash your hands the first time when you arrive at home. If community environment is not polluted by vomits, secretions, or excrement, there is no need to disinfect in principle. The external surfaces of vehicles coming in and out of the community shall not be sanitized either.
No.2 Concentration of disinfectants too higher or too lower
It’s believed by someone that the higher the concentration of disinfectant is, the better the effect of sanitization will be. But truth is not this. Generally, powerful disinfectant in overly high concentration is irritating to the oral cavity, respiratory tract, and lungs, sometimes even having the risks of causing organ and tissue harms. Disinfectants for market sales shall be used after dilution according to the label for instructions. The alcohol with a concentration of 75% shall be best chosen as disinfectant.
No.3 Mixed use of different types of disinfectants
Mixing two or more types of disinfectants may quite possibly endanger one’s life by triggering chemical reactions. The chlorine gas generated by mixing 84 disinfectant and alcohol may irritate and harm the respiratory tract, and if the concentration reaches 3000 mg/m3, it will cause human death. Mixing 84 disinfectant with toilet cleaner will generate poisonous gas that might cause poisoning by irritating human throat, respiratory tract and lungs. Laundry detergent shall also not be mixed with disinfectants.
No.4 Free of necessary self-protection when using disinfectants
Disinfectants are generally strong irritant liquids which may cause damage to respiratory tract and skin. In the processing of using disinfectant, exposure of mouth and nose shall be avoided, and it’s better to cover them with masks and rubber gloves to prevent liquid splash.
No.5 Sanitizing indoor places by spraying alcohol
When using alcohol in indoor places, avoid the spraying way of disinfection. Disinfecting the surfaces of electrical appliance shall begin by turning off the power first, and proceed until the electrical appliance cools down, otherwise deflagration may be induced.
No.6 Washing hands in flowing water replaced with hand-free sanitizer
Hand-free sanitizer comprises disinfectant composition (mainly with ethanol) which present a certain effect of sanitization. But disinfectant composition is irritating to some extent and may cause skin allergy. Therefore if condition permits, it’s better to wash hands with flowing waters and soap or hand sanitizer. Clean finger tips, palms, wrists, and every part thoroughly and carefully.
No.7 Further cleaning cancelled after disinfection of objects
Disinfectants have corrosion effects on objects, especially the strong corrosion effects on metal. Disinfectant is also irritating to human body. Half an hour after using disinfectants, you shall wipe the surface of the object in the environment with clean water.
No. 8 Inappropriate placement of disinfectants
Most chemical disinfectants fall into the category of flammable, explosive, and corrosive objects. Be careful in the process of placing and using them. Disinfectants shall not be purchased with too many each time. The container for storing the disinfectants shall be equipped with a sealing lid. The volume of a single bottle package shall not exceed 500 ml. The container shall be placed in shade to avoid sunshine or heat and it must be ensured that the place is not easily accessible by children. Rags or other items used for disinfection shall be cleaned with large amounts of water after usage and then placed in ventilated area for dry.