LED UV lamp disinfection should be well protected
Time:2022-05-07
Views:301
Ultraviolet rays are generally divided into long, medium and short wavelengths according to their wavelengths: long-wave ultraviolet rays with a wavelength of 380-320 nm are referred to as UVA, medium-wave ultraviolet rays with a wavelength of 320-280 nm are referred to as UVB, and short-wave ultraviolet rays with a wavelength shorter than 280 nm are referred to as UVC. Most of the ultraviolet disinfection lamps sold in the market now use the short-wave ultraviolet (UVC) of 254nm announced by the mercury lamp to complete the disinfection. This UVC ultraviolet light has a shorter wavelength and carries a larger amount of energy. But because of this, this short-wave ultraviolet lamp, without protective measures, will cause direct harm to the human body: 1. If people‘s eyes and skin are exposed to ultraviolet light for more than 3 minutes, it may exceed the international level. The human safety gap formulated by the World Health Organization (WHO) and the International Committee for the Protection of Non-Ionizing Radiation (ICNIRP); 2. Assuming that after 15 minutes of direct exposure, it will damage the cornea and cause electro-optic ophthalmia, sudden severe pain in the eyes, and foreign bodies Sensitivity, photophobia, lacrimation or blepharospasm, etc.; 3. Long-term exposure will harm the eyes and skin, resulting in severe burns to eye wounds and skin, and may lead to skin cancer. In response to the above-mentioned problems in the ultraviolet lamp market and the misunderstandings of customers, the my country Consumers Association solemnly declares a consumer warning:
1. Establish safety awareness and use UV lamps carefully. In view of the fact that short-wave ultraviolet radiation may affect health, unless professional protection ability and operating level are provided, general consumers should not use ultraviolet lamps for household purposes to disinfect the living environment, let alone for lighting purposes.
2. Customers can choose a variety of safe disinfection and sterilization methods, and do not be superstitious about the universal disinfection effect of short-wave ultraviolet lamps. The sterilization performance of UV lamps can be affected by a number of factors, including exposure time, distance, dust or particles, and light intensity. Short-wave ultraviolet rays cannot penetrate objects, and most of them are absorbed by plastics and general glass.
3. When it is necessary to use ultraviolet lamps for disinfection, operators must wear protective equipment. For example, using multi-purpose protective glasses to protect the eyes, they must not be directly irradiated; at the same time, the skin should also be prevented from contacting ultraviolet radiation. When performing UV disinfection in public places, irrelevant personnel should avoid it, especially to prevent the elderly and children from entering the UV lamp work area by mistake.
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