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Cold atmospheric plasma inactivation of aerosolized microdroplets containing bacteria and purified SARS‐CoV‐2 RNA to contrast airborne indoor transmission
Plasma Processes and Polymers ( IF 3.5 ) Pub Date : 2020-08-31 , DOI: 10.1002/ppap.202000154
Alina Bisag 1 , Pasquale Isabelli 1, 2 , Romolo Laurita 1, 2, 3 , Cristiana Bucci 1, 3, 4, 5 , Filippo Capelli 1, 2 , Giorgio Dirani 6 , Matteo Gherardi 1, 2, 3 , Giulia Laghi 1 , Alessandro Paglianti 7 , Vittorio Sambri 6, 8 , Vittorio Colombo 1, 2, 3, 9
Affiliation  

One of the major concerns in the COVID-19 pandemic is related to the possible transmission in poorly ventilated spaces of SARS-CoV-2 through aerosol microdroplets, which can remain in the air for long periods of time and be transmitted to others over distances >1 m. Cold atmospheric pressure plasmas can represent a promising solution, thanks to their ability in producing a blend of many reactive species, which can inactivate the airborne aerosolized microorganisms. In this study, a dielectric barrier discharge plasma source is used to directly inactivate suitably produced bioaerosols containing Staphylococcus epidermidis or purified SARS-CoV-2 RNA flowing through it. Results show that for low residence times (<0.2 s) in the plasma region a 3.7 log R on bacterial bioaerosol and degradation of viral RNA can be achieved.

中文翻译:

含细菌和纯化 SARS-CoV-2 RNA 的雾化微滴的冷大气等离子体灭活以对比空气室内传播

COVID-19 大流行的主要问题之一与 SARS-CoV-2 在通风不良的空间中可能通过气溶胶微滴传播有关,这些微滴可以长时间留在空气中并远距离传播给他人 > 1 米。冷大气压等离子体可以代表一种有前景的解决方案,因为它们能够产生多种反应性物质的混合物,可以灭活空气中的雾化微生物。在这项研究中,介质阻挡放电等离子体源用于直接灭活适当生产的含有表皮葡萄球菌或纯化的 SARS-CoV-2 RNA 流过的生物气溶胶。结果表明,对于血浆区域的低停留时间(<0.2 s),可以实现对细菌生物气溶胶和病毒 RNA 降解的 3.7 log R。
更新日期:2020-08-31
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