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What is the disinfection principle of UV sterilisation lamps?
Release time:
2021-07-16
The disinfection principle of ultraviolet disinfection lamp is to use the UV light released to inactivate bacteria and viruses.
The disinfection principle of ultraviolet disinfection lamp is to use the UV light released to inactivate bacteria and viruses, so as to achieve the effect of sterilization and disinfection. And, specific to the specific working principle of the UV disinfection lamp, we have to talk about the light source of the UV lamp, there are two main types: gas discharge light source and solid light source.
In general, we can buy the ultraviolet disinfection lamp, basically are gas discharge light source, mainly low-pressure mercury lamp. It is like a fluorescent lamp, except that the lamp is filled with mercury vapour, and the mercury atoms are excited by charging the lamp to produce UV light. Mercury vapour at low pressure typically produces UV light at 254 nm and 185 nm.
These short-wave 254 nm UVCs (UVCs) disrupt the molecular structure of the DNA and RNA of microbial cells, leading to cell death and a disinfecting and sterilising effect.
Although 185nm UVD UVC does not have an effective bactericidal effect, it can break down the oxygen in the air and produce ozone, which is strongly oxidising and oxidises the enzymes needed to break down glucose within bacteria, causing the bacteria to die and achieving a sterilising and disinfecting effect. When you shop for UV disinfection lamps, you will find that almost all UV lamps, there will be ozone lamps and ozone-free lamps version, which is actually based on the working principle of UV disinfection lamps decided.
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