The answer can be said to be yes, ultraviolet rays can kill the new coronavirus. In the “New Coronavirus Pneumonia Diagnosis and Treatment Plan”, we can know the etiological characteristics of the new coronavirus. It is sensitive to ultraviolet rays and heat, and the new coronavirus is at 56°C for 30 minutes, ether, 75% ethanol, and chlorine-containing disinfectant It can be effectively inactivated under the action of lipid solvents such as peracetic acid and chloroform. But chlorine must not be effective in inactivating the virus.
In addition, the sterilization efficiency of ultraviolet rays is very high, and the sterilization efficiency can reach 99% to 99.9%. Moreover, under the action of ultraviolet rays, the sterilization time of several common bacteria and viruses in life is generally within 1 second, and the blink of an eye is not required. Traditional chemical disinfection methods such as chlorine and ozone generally take 20 minutes to 1 hour to achieve the sterilization effect of ultraviolet rays.
Ultraviolet light is a special form of matter movement, which is composed of a stream of unconnected particles. There are 4 kinds of wavelengths of ultraviolet rays in nature, namely UVA band, UVB band, UVC band, and UVD band. UVA wave band, wavelength 320～400nm, also known as long-wave Hertzian effect ultraviolet rays. The UVB band, with a wavelength of 275-320nm, is also called medium-wave erythema effect ultraviolet rays. The UVC band, with a wavelength of 100-275nm, is also called short-wave sterilizing ultraviolet light. UVD band, the wavelength is less than 100nm, also known as vacuum ultraviolet.
The ultraviolet lamp that we often use to sterilize in our daily life, emits UVC short-wave ultraviolet rays. Its penetrating ability is the weakest, unable to penetrate most of the transparent glass and plastic. Don’t think that it has the weakest penetrating ability and think that it is harmless to the human body. Short-wave ultraviolet rays are also harmful to the human body. Short-term exposure can burn the skin, and long-term or high-intensity exposure can also cause skin cancer.
The principle of ultraviolet sterilization is to use the intensity of ultraviolet radiation. When ultraviolet rays are irradiated to microorganisms, energy transfer and accumulation will occur. When bacteria and viruses absorb more than 3600-65000w/cm dose, they can deoxidize bacteria and viruses. Ribonucleic acid (DNA) and nucleic acid (RNA) cause powerful destructive power, which can make bacteria and viruses lose their viability and reproductive power, thereby destroying bacteria and viruses, so as to achieve the purpose of disinfection and sterilization.
In our daily life, ultraviolet light can be used to produce ultraviolet light. The emission spectrum of ultraviolet light mainly has two 254nm and 185nm lines. 254nm ultraviolet rays destroy the structure of DNA and RNA in microorganisms by irradiation, causing the genetic material in viruses, bacteria, and other microorganisms to break, crosslink or form photochemical products; while 185nm ultraviolet rays can act on oxygen in the air to produce strong oxidation The ozone can directly oxidize the cell body of bacteria and destroy its DNA to achieve an inhibitory effect. At the same time, it also has a destructive effect on virus RNA, so as to achieve the purpose of killing viruses and bacteria.
CSIR can effectively inactivate viruses and bacteria within a few minutes; the built-in dual UV module and purification system provide you and your family with an extra layer of protection.
CSiR, An Air Disinfector, Not a Regular Air Purifier. The founder of CSiR hopes to provide people with one personal device that delivers more clean and healthy air to daily life. Therefore, CSiR uses UV technology to find an air disinfection solution that can share with users. CSiR’s goal is to offer clean and fresh air to every person and their family.
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