In Table 1 of an article, Persistence of coronaviruses on inanimate surfaces and their inactivation with biocidal agents, by G. Kampf, D. Todt, S. Pfaender, E. Steinmann that appeared online February 6, 2020 on the website for Journal of Hospital Infection are set out persistence of coronaviruses on different types of surfaces.
Does the concept of half-life apply to an aggregation of corona viruses? Are there any such studies?
It would seem unlikely that all the virus particles become inactive at the same time. Do they?
The airborne lifetime of small speech droplets and their potential importance in SARS-CoV-2 transmission
by Valentyn Stadnytskyi, Christina E. Bax, Adriaan Bax, and Philip Anfinrud PNAS first published May 13, 2020 https://doi.org/10.1073/pnas.2006874117
From the article: "The weighted average decay rate (0.085 min-1) of the bright and dim fractions of particles (Fig. 1A) translates into a half-life in the enclosure of ca. 8 min."
Hi
Please check the following link. I believe it will help you.
https://coronavirusexplained.ukri.org/en/article/pub0008/
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The article links shared by Mayank, md Sazal and Robert have the details of the answers to this very vital question.
van Doremalen N, Bushmaker T, Morris DH. et al.
Aerosol and Surface Stability of SARS-CoV-2 as Compared with SARS-CoV-1.
The New England Journal of Medicine.
https://www.nejm.org/doi/full/10.1056/NEJMc2004973