Sut mae golau UVC LED (254/365nm) yn niweidio'r corff dynol a sut i'w amddiffyn?
Er mwyn deall niwed pelydrau uwchfioled i'r corff dynol yn fwy greddfol, gadewch imi yn gyntaf gyflwyno'r wybodaeth sylfaenol am belydrau uwchfioled (UV). Mae uwchfioled (UV) yn cynnwys tri brawd: UVA/UVB/UVC.
Mae gan bob band bersonoliaeth wahanol. Dim ond UVA ac UVC sy'n cael eu cynnal yma; Mae 254nm yn perthyn i'r band UVC, tra bod 365nm yn perthyn i'r band UVA. Mae gan olau uwchfioled donfedd fer ond egni uchel. Mae'r difrod i'r corff dynol yn wahanol i'r ddau, felly byddaf yn siarad amdanynt ar wahân.
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.
O'i gymharu â UVC, mae UVA yn gymharol ysgafn ac nid yw'n achosi niwed llygad acíwt. Ond mae hefyd yn niweidiol i liw haul, croen crychlyd yr haul, ac mae'n cyflymu dilyniant cataractau a dirywiad macwlaidd sy'n gysylltiedig ag oedran. Felly, ar gyfer y lamp UV 365nm, gwnewch eli haul, a pheidiwch ag edrych yn uniongyrchol i'ch llygaid!
