222 紫外線。 日本研究證實 波長222奈米紫外線有效滅病毒 | 蘋果新聞網 | 蘋果日報

For the vast majority of consumers, professionals, businesses, and institutions, regular UVC bulbs and fixtures still make the most sense in terms of effectiveness and cost. We carry a fairly extensive line of far UVC products from selection of the manufacturers currently designing and producing 222nm equipment and components. Far-UVC light: A new tool to control the spread of airborne-mediated microbial diseases. DNA damage kills bacterial spores and cells exposed to 222-Nanometer UV radiation. Long-term Effects of 222-nm ultraviolet radiation C sterilizing lamps on mice susceptible to ultraviolet radiation. PLoS One 8 10 , e76968 2013. Precautions must be taken when using 254nm UVC equipment, but the cost is a fraction of far UVC, replacement bulbs and ballasts are widely available, and multipe options exist for air, surface, or water sanitization. Far-UVC light efficiently and safely inactivates airborne human coronaviruses. While the cost may decrease with mass production, simple far UVC equipment could cost several thousand dollars, and more advanced equipment could cost several tens of thousands of dollars. This category of products exists for informational and educational purposes, or for those interested in purchasing products at the leading edge of lighting technology. Also, the line of fixtures and lamps should expand over time. Buyers should verify the full spectral distribution graph of any far UVC lights they purchase. Exploratory clinical trial on the safety and bactericidal effect of 222-nm ultraviolet C irradiation in healthy humans. Few products in this category are currently affordable for the general public, but these items and others similar to it may be available to commercial buyers, government institutions, hospitals, and universities, or for manufacturers developing new equipment. Currently, many far UVC fixtures and components lamps and ballasts are now available for sale to the general public. Far UVC is on the cutting edge of medical lighting right now, not readily available, and still cost prohibitive compared to equipment utilizing. One study even showed skin damage to humans after exposure to Far UVC. That's Too Expensive, Are There Alternatives? Manufacturing quality could play a large part in making this technology safe in the future, but small differences in wavelength can make a big difference in the effect on human health. The bottom line for safety is that, until more research is done on healthy and unhealthy human skin and eyes, and unless the proper wavelength of light can be guaranteed throughout the effective life of the far UVC light source, long term far UVC is not safe to expose to skin or eyes. However, if there is a solution that you do not see, custom products can be manufactured. As excimer lamp technology is relatively new and specialized, the equipment using these lamps will be very expensive, especially in comparison to traditional 254nm UVC fixtures and systems, and even more expensive than UV. Buonanno Brian Ponnaiya David Brenner etal. The big danger is that, if the far UVC light source does not block longer-wavelength light from passing through the bulb envelope, it can still be dangerous. PLoS One 15 8 , e0235948 2020. Please note that at least one study showed damage to human skin after exposure to equipment utilizing far UVC excimer lamp technology. Some people believe this study to have been sufficiently disproved, however. Far UVC of the 222nm wavelength and below is currently being researched as a potential alternative to conventional germicidal lights of the 253. When Will Far UVC Equipment Be Available? Evaluation of acute corneal damage induced by 222-nm and 254-nm ultraviolet light in Sprague-Dawley rats. Germicidal efficacy and mammalian skin safety of 222 nm light. Several studies have shown that far UVC has not damaged the skin or eyes of some mammals, while other studies have been inconsistent. According to that evaluation of a far UVC device, "At low doses below the threshold bacteriostatic effect, the source was capable of inducing both erythema and CPD formation in human skin. According to the Illumination Engineering Society, far UVC light bulbs can still pose a threat to human skin and eyes. While 222nm UVC technology holds promise, has long been used by hospitals, industry, and governments for air, surface, and water purification.。 。 。 。 。 。
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