Disinfection of Surfaces Contaminated with SARS-CoV-2 Coronavirus by UV Radiation of Low-Pressure Mercury-Vapour Lamp

Disinfection of Surfaces Contaminated with SARS-CoV-2 Coronavirus by UV Radiation of Low-Pressure Mercury-Vapour Lamp

The aim of the work was to determine the effective ultraviolet (UV) doses required for the disinfection of surfaces contaminated with the SARS-CoV-2 coronavirus using a low-pressure mercury lamp. Materials and methods. To carry out prompt disinfection of surfaces, a specially designed source of UV r...

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Bibliographic Details
Main Authors: D. N. Masyakin, A. E. Alferov, S. G. Kikot’, I. A. Androshchuk, V. B. Kirillov, S. L. Kirillova, E. A. Koval’chuk, M. A. Kotov, V. А. Lopota, I. G. Rudoy, N. G. Solov’ev, A. M. Soroka, V. V. Trufanova, N. Ya. Chepurenkov, A. N. Shemyakin, M. Yu. Yakimov, S. V. Borisevich
Format: Article
Language:Russian
Published: Federal Government Health Institution, Russian Research Anti-Plague Institute “Microbe” 2023-07-01
Series:Проблемы особо опасных инфекций
Subjects:
disinfection
sars-cov-2 coronavirus
uv radiation
Online Access:https://journal.microbe.ru/jour/article/view/1831
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Summary:The aim of the work was to determine the effective ultraviolet (UV) doses required for the disinfection of surfaces contaminated with the SARS-CoV-2 coronavirus using a low-pressure mercury lamp. Materials and methods. To carry out prompt disinfection of surfaces, a specially designed source of UV radiation with a power of 7.5 W at a wavelength of 254 nm in the form of a portable flashlight was employed, which has a high efficiency of UV radiation output and the possibility of long-term autonomous operation from a compact battery. In the studies, a suspension culture of the SARS-CoV-2 coronavirus with biological activity of 5.3∙106 PFU/ml was used. The objects of testing were plastic Petri dishes (disposable) and office paper (grade C, density 80 g/m2 ). Results and discussion. Doses of UV radiation that provide disinfection of surfaces contaminated with the COVID-19 pathogen with an efficiency of 99.0 % (paper) to 99.95 % (plastic) have been determined. The results obtained make it possible to recommend a portable UV irradiator for use in the practice of preventive measures to combat the spread of the disease caused by the SARS-CoV-2 coronavirus.
ISSN:0370-1069
2658-719X

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