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Gamma radiation useful for making Hulks, not so good for sterilizing N95 face masks, MIT, Brigham and Women's researchers say

It's not so much that the gamma radiation doesn't kill coronavirus - it does - but that it degrades the way the masks work after they're zapped, according to a report by MIT News.

The testing involved putting some masks in a container for irradiation from some Cobalt-60 in an MIT lab.

Michael Short, an MIT professor of nuclear science and engineering, then bicycled the masks over to Brigham and Women's Hospital for further testing - He sent three hours being sprayed with a mist of saccharin. He never got a taste of the stuff, so the masks seemed to be OK, but then further testing back at MIT showed that the irradiation had damaged the masks' ability to repel or capture even smaller salt molecules shot at it. And that meant they would be useless as the sort of viral shield medical workers need.

Researchers uploaded their results to an online site on March 28. Since then, a Chicago non-profit has delivered a mask sterilizing system - which uses concentrated hydrogen peroxide vapor - to an abandoned Kmart in Somerville, where it will sterilize up to 80,000 masks a day.

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Comments

Important to know what doesn't work as well as what does.

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What about washing them in soap and hot water, then putting them in the dryer? How could a virus survive that?

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The general problem is that many methods which kill the virus also damage the masks' ability to filter effectively.

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Because I've been slowly walking around the house, head down, whistling the song from the end credits for about a month now

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99.99% of those exposed to gamma radiation overdoses end up dead, not Hulks. So don't try this at home, kids.

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dry heat?

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Now what am I going to do with my Cobalt-60?

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