We report on the design, characterization and validation of a spherical irradiation system for inactivating SARS-CoV-2, based on UV-C 275 nm LEDs. The system is designed to maximize irradiation intensity and uniformity and can be used for irradiating a volume of 18 L. To this aim: (i) several commercially available LEDs have been acquired and analyzed; (ii) a complete optical study has been carried out in order to optimize the efficacy of the system; (iii) the resulting prototype has been characterized optically and tested for the inactivation of SARS-CoV-2 for different exposure times, doses and surface types; (iv) the result achieved and the efficacy of the prototype have been compared with similar devices based on different technologies. Results indicate that a 99.9% inactivation can be reached after 1 min of treatment with a dose of 83.1 J/m 2 .
【저자키워드】 COVID-19, SARS-CoV-2, inactivation, Disinfection, UVC, LED, virucide, 【초록키워드】 Treatment, Efficacy, optical, dose, Volume, intensity, Complete, Result, resulting, tested, carried, characterized, can be used, reached, 【제목키워드】 validation, characterization, irradiation,