Ultraviolet lamp uses the ultraviolet light emitted by mercury lamp to achieve the function of sterilization and disinfection. It emits a lot of ultraviolet energy, which can easily cause great harm to human body without protective measures. If exposed skin is irradiated by this ultraviolet lamp, it will be red, swollen, itchy and desquamated. In severe cases, it may even cause cancer, skin tumors and so on. At the same time, it is also the "invisible killer" of eyes, which will cause inflammation of conjunctiva and cornea, and long-term irradiation may lead to cataract.
Ultraviolet sterilization means that the molecular structure of DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) in microbial cells can be destroyed by ultraviolet with appropriate wavelength, resulting in the death of growing cells and/or regenerative cells, thus achieving the effect of sterilization and disinfection.
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Excessive exposure to ultraviolet radiation may lead to sunburn and some forms of skin cancer, but the most deadly forms of malignant melanoma are mostly caused by indirect DNA damage (free radicals and oxidative stress), which can be known from the gene mutation of 92% melanoma with ultraviolet characteristics. For humans, long-term exposure to ultraviolet radiation may have acute and chronic health effects on skin, eyes and immune system. In addition, ultraviolet C can lead to different degrees of mutation or carcinogenic adverse effects.
UVC is the strongest and most dangerous ultraviolet ray. Because UVC was filtered out when it passed through the atmosphere, it received little attention in the past. However, when they are used for disinfection equipment, such as pond disinfection, if the germicidal lamp is connected with other equipment, it will cause exposure risk.
20 1 1 On April 3rd, 2008, the World Health Organization International Organization for Research on Cancer listed all kinds of ultraviolet radiation as 1 carcinogen. This is the highest level of carcinogen, which means that there is not enough evidence to rule out the possibility that it causes cancer to human beings.