UVC LED ultraviolet germicidal lamp, are you using it right? In the fight against the new crown pneumonia epidemic, in addition to standing masks, alcohol, and goggles, it is also an effective anti-epidemic material. The 'New Coronavirus Infection Pneumonia Diagnosis and Treatment Plan (Trial Version 5)' pointed out that the new coronavirus is sensitive to ultraviolet light. The deep ultraviolet band has the strongest disinfection and sterilization effect. The main ultraviolet light source in nature is the sun. When sunlight passes through the atmosphere, ultraviolet rays with a wavelength shorter than 290nm are absorbed by the ozone in the atmosphere. Artificial ultraviolet light sources have arcs of various gases (such as low-pressure mercury arcs and high-pressure mercury arcs). Ultraviolet rays have chemical effects that can make photographic films sensitive and have strong fluorescence. Fluorescent lamps, various fluorescent lamps and black light lamps used to trap and kill insects in agriculture All use ultraviolet rays to excite fluorescent materials to emit light. Ultraviolet rays can also prevent counterfeiting, and ultraviolet rays also have physiological effects, which can sterilize, disinfect, and treat skin diseases and rickets. Ultraviolet rays have strong particle properties and can cause various metals to produce photoelectric effects. is an ancient and effective method. Drying the quilt in the sun is the most primitive use of ultraviolet rays to remove mites, disinfect and sterilize. Li Jinmin, director of the State Key Laboratory of Semiconductor Lighting Joint Innovation, said that the principle of ultraviolet disinfection lamps
is to use high-energy ultraviolet light to break the double helix of DNA to inactivate bacteria and viruses. Ultraviolet rays need to meet certain requirements to achieve effective sterilization and disinfection. Pay attention to the wavelength, irradiation dose and time of the ultraviolet light source, that is, it must be deep ultraviolet light in the UVC band with a wavelength below 280nm, and meet a certain irradiation dose and time for different bacteria and viruses. , Otherwise it cannot be inactivated.
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