Base Information
Volume
V53 - N3 / 2020 Ordinario
Reference
51044: 1-7
DOI
http://dx.doi.org/10.7149/OPA.53.3.51044
Language
English
Keywords
UVC, Germicidal radiation, Disinfection
Abstract
Disinfection is now one of the major concerns of society. Soap, or hydroalcohol are two known ways of sanitizing different objects. Now we can find in the market more sophisticated systems, which provide more confidence on their sanitizing effects, or that allows disinfection of objects that cannot be sanitized with soap or hydroalcoholic solutions. In this work we analyze a commercially available sanitizing device that claims the use of UVC radiation. We will show that this device is not suitable for complete disinfection of the objects introduced on the cabin. We provide spectral characterization of the sources, as well as irradiance measurements inside the cabin. We conclude that the cabin cannot be used for sanitizing most of the objects that are included in the documentation of the device.
References
A. Cabaj, et. al., Ultraviolet air disinfection, CIE 155:2003 ISBN: 9783901906251 (2003).
Jean-Pierre Cesarini, et. al., UV-C photocarcinogenesis risks from germicidal lamps, CIE 187:2010, ISBN: 9783901906817 (2010).
Chevrefils, G., Caron, É., Wright, H., Sakamoto, G., Payment, P., Barbeau, B., & Cairns, B. "UV dose required to achieve incremental log inactivation of bacteria, protozoa and viruses". IUVA News, 8(1), 38-45 (2006).
Patricia Carol Gil, Asher Gil, Daniel Gil, "System for Sterilizing Objects Utilizing Germicidal UV-C Radiation and Ozone", Patent WO 2016/060855 Al (2016)
Heßling, Martin, et al. "Ultraviolet irradiation doses for coronavirus inactivation–review and analysis of coronavirus photoinactivation studies," GMS hygiene and infection control 15 (2020)
Sabino, C. P., Ball, A. R., Baptista, M. S., Dai, T., Hamblin, M. R., Ribeiro, M. S., ... & Wainwright, M. 'Lightbased technologies for management of COVID-19 pandemic crisis', Journal of Photochemistry and Photobiology B: Biology, 111999 (2020).
Hiroko Inagaki, Akatsuki Saito, Hironobu Sugiyama, Tamaki Okabayashi & Shouichi Fujimoto, "Rapid inactivation of SARS-CoV-2 with deep-UV LED irradiation", Emerging Microbes & Infections, 9:1, 1744-1747 (2020)
Bianco, A., Biasin, M., Pareschi, G., Cavalleri, A., Cavatorta, C., & Fenizia, C. "UV-C irradiation is highly effective in inactivating and inhibiting SARS-CoV-2 replication".
Heilingloh, Christiane Silke, et al. "Susceptibility of SARS-CoV-2 to UV Irradiation", American Journal of Infection Control (2020).
Schuit, Michael, et al. "Airborne SARS-CoV-2 is Rapidly Inactivated by Simulated Sunlight." The Journal of Infectious Diseases, Volume 222, Issue 4, 15, 564–571 (2020).
Rezaie A, Leite GGS, Melmed GY, Mathur R, Villanueva-Millan MJ, Parodi G, et al. 'Ultraviolet A light effectively reduces bacteria and viruses including coronavirus". PLoS ONE 15(7): e0236199 (2020).
Tomb, Rachael M., et al. "Review of the comparative susceptibility of microbial species to photoinactivation using 380–480 nm violet-blue light." Photochemistry and photobiology 94.3 445-458 (2018).
She, Rosemary C., et al. Lightweight UV-C disinfection system., Biomedical Optics Express, 11.8, 4326-4332 (2020).
Baluja, A., Arines, J., Vilanova, R., Cortiñas, J., Bao-Varela, C., & Flores-Arias, M. T. 'UV light dosage distribution over irregular respirator surfaces. Methods and implications for safety". Journal of Occupational and Environmental Hygiene, 1-8 (2020).