Bagaimana lampu LED UVC (254/365nm) membahayakan tubuh manusia dan bagaimana melindunginya?
Untuk memahami bahaya sinar ultraviolet bagi tubuh manusia secara lebih intuitif, izinkan saya memperkenalkan pengetahuan dasar sinar ultraviolet (UV). Ultraviolet (UV) mengandung tiga saudara: UVA/UVB/UVC.
Setiap band memiliki kepribadian yang berbeda. Hanya UVA dan UVC yang dilakukan di sini; 254nm milik pita UVC, sedangkan 365nm milik pita UVA. Sinar ultraviolet memiliki panjang gelombang yang pendek tetapi energinya tinggi. Kerusakan pada tubuh manusia berbeda dari keduanya, jadi saya akan membicarakannya secara terpisah.
The comparison chart of ultraviolet sterilization ability of different wavelength bands First, 254nm: 254nm is the band with the best sterilization effect, which belongs to the deep ultraviolet band, which is what we usually call UVC. This band is mainly used for sterilization. By destroying the genetic material such as DNA of bacteria and viruses, UVC changes the genetic transcription characteristics of cells, so that the organism loses the ability to synthesize and reproduce proteins, and can kill more than 99 percent of bacteria in a very short period of time. You need to be extra careful when you are in contact with this frequency band in daily operations, and the human body is very harmful. In the eye in particular, after UVC is absorbed by the cornea, the DNA of the corneal epithelial cells is damaged, the cells die, and the underlying nerve plexus is exposed. After the nerve is exposed, pain is transmitted directly to the brain until new corneal epithelial cells grow and re-cover the nerve plexus. However, although the UVC force value is very strong, it also has weaknesses. Its biggest disadvantage is its weak penetration ability, which can be blocked by ordinary plastic and glass. If you are accidentally exposed to ultraviolet rays in this band, it is best to go to the hospital and ask your doctor for advice. After talking about 254nm, let's talk about 365nm: 365nm is UVA, which belongs to shallow ultraviolet. UVA can directly pass through the clouds and reach the earth, so the sun we are in daily contact with contains a lot of UVA. This band is mainly used for curing in daily life, and the main application fields are printing, nail art, textile and so on. When we look at the teeth, this light uses UVA.
Dibandingkan dengan UVC, UVA relatif ringan dan tidak menyebabkan kerusakan mata akut. Tapi itu juga berbahaya bagi kulit cokelat, kulit keriput akibat sinar matahari, dan mempercepat perkembangan katarak dan degenerasi makula terkait usia-. Karena itu, untuk lampu UV 365nm, lakukan tabir surya, dan jangan menatap langsung ke mata!
