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The role of using ultraviolet (UV) disinfection lamps and precautions for use.
May 21,2018
Ultraviolet (UV) light has a disinfecting effect, which is why it is now installed in some restaurants, hotels, hospitals, and even in some homes. It can be said that it has been widely applied in daily life. However, recently there have been incidents of injuries caused by improper use of UV light, so we need to pay attention to how to use UV light safely.
UV lamps are commonly used sterilization tools in professional fields such as medicine, drinking water, and food. During the "SARS" period, they began to enter various public places and even households. Some of them look very similar to household fluorescent lamps. Currently, many ordinary families purchase them. However, due to the unclear warning signs on the products, and businesses often neglecting to mention their harmfulness in promotions, consumers often do not realize the harm UV lamps can cause to the human body. Therefore, in recent years, injuries caused by the misuse of UV lamps have occurred from time to time.
UV lamps use ultraviolet light emitted by mercury lamps to achieve sterilization and disinfection functions. The energy of the ultraviolet light they emit is quite high, and without protective measures, it can easily cause significant harm to the human body. If exposed skin is irradiated by such UV lamps, mild cases may result in redness, swelling, itching, and peeling; severe cases may even lead to cancer and skin tumors. At the same time, it is also an "invisible killer" for the eyes, causing conjunctivitis and corneal inflammation, and long-term exposure may lead to cataracts.
For small UV lamps used in some restaurants and homes to eliminate mosquitoes, their light-emitting principles are different, and consumers need not worry. If there are patients with severe conditions such as leukemia at home, a relatively sterile environment is necessary, and it is essential to purchase UV lamps. However, UV lamps should not be used for ordinary household lighting.
When it is necessary to use UV lamps for disinfection, one should also try to avoid skin and eye exposure to UV light. If exposed to UV lamp light for more than 3 minutes, it may exceed the human safety limit. Direct exposure for 15 minutes can cause corneal damage leading to photokeratitis, and long-term exposure may also induce cataracts and skin cancer. Therefore, when using UV disinfection lamps, there should be no one in the room, and the disinfection time should be between 30 minutes to 1 hour.
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