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Thread: Far-UVC light: new tool to control the spread of airborne-mediated microbial disease

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    Veteran Member grulla's Avatar
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    Default Far-UVC light: new tool to control the spread of airborne-mediated microbial disease

    David Welch, Manuela Buonanno, Veljko Grilj, Igor Shuryak, Connor Crickmore, Alan W. Bigelow, Gerhard Randers-Pehrson, Gary W. Johnson & David J. Brenner
    February 9, 2018

    Abstract
    Airborne-mediated microbial diseases such as influenza and tuberculosis represent major public health challenges. A direct approach to prevent airborne transmission is inactivation of airborne pathogens, and the airborne antimicrobial potential of UVC ultraviolet light has long been established; however, its widespread use in public settings is limited because conventional UVC light sources are both carcinogenic and cataractogenic. By contrast, we have previously shown that far-UVC light (207–222 nm) efficiently inactivates bacteria without harm to exposed mammalian skin. This is because, due to its strong absorbance in biological materials, far-UVC light cannot penetrate even the outer (non living) layers of human skin or eye; however, because bacteria and viruses are of micrometer or smaller dimensions, far-UVC can penetrate and inactivate them.

    Read more: https://www.nature.com/articles/s41598-018-21058-w
    Last edited by Islander; 02-13-18 at 11:24 AM.

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    Moderator Julieanne's Avatar
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    Default Re: Far-UVC light: new tool to control the spread of airborne-mediated microbial dise

    Fascinating! I guess the first use of these would be in hospitals and doctor's surgeries? I wonder what the cost will be, and when this technology will be available.

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    Veteran Member Maurya's Avatar
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    Default Re: Far-UVC light: new tool to control the spread of airborne-mediated microbial dise

    This makes sense to me. Currently I am using an UV flow through unit as the third and final stage in my cistern water filtration system. The replacement bulbs are quite pricey (about $70 US), although one usually lasts for more than a year. This system is supposed to reduce the bacteria which remain in the water after the first two sediment filters (20 micron and 5 micron with charcoal) have done their thing with the water as it gets pumped to the spigot.

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    Administrator Islander's Avatar
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    Default Re: Far-UVC light: new tool to control the spread of airborne-mediated microbial dise

    Can anyone tell me what "conventional UVC light sources" are?
    ➤ Happiness is the frosting on the cake of contentment.

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    Veteran Member grulla's Avatar
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    Default Re: Far-UVC light: new tool to control the spread of airborne-mediated microbial dise

    Quote Originally Posted by Islander View Post
    Can anyone tell me what "conventional UVC light sources" are?
    Perhaps this link is helpful: https://www.light-sources.com/soluti...dal-uvc-lamps/

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    Administrator Islander's Avatar
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    Default Re: Far-UVC light: new tool to control the spread of airborne-mediated microbial dise

    Not sure what the tree in the house means, but yes, that's helpful. Thanks!
    ➤ Happiness is the frosting on the cake of contentment.

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