Inactivation of SARS-CoV-2 in the Liquid Phase: Are Aqueous Hydrogen Peroxide and Sodium Percarbonate Efficient Decontamination Agents?
Davide Mileto, Alessandro Mancon, Federica Staurenghi, Alberto Rizzo, Stefano Econdi, Maria Rita Gismondo, Matteo Guidotti
Abstract
A diluted 3% w/w hydrogen peroxide solution acidified to pH 2.5 by adding citric acid inactivated SARS-CoV-2 virus by more than 4 orders of magnitude in 5 min. After a contact time of 15 min, no viral replication was detected. Aqueous solutions of sodium percarbonate inactivated coronavirus by >3 log10 diminution in 15 min. Conversely, H2O2 solutions with no additives displayed a scarce virucidal activity (1.1 log10 diminution in 5 min), confirming that a pH-modifying ingredient is necessary to have a H2O2-based disinfectant active against the novel coronavirus.
Topics & Concepts
DisinfectantHydrogen peroxideChemistryAqueous solutionHuman decontaminationCitric acidCoronavirusSodium citrateSodiumNuclear chemistryCoronavirus disease 2019 (COVID-19)Food scienceOrganic chemistryPhysicsPathologyDiseaseInfectious disease (medical specialty)MedicineNuclear physicsInfection Control and VentilationSARS-CoV-2 detection and testingDental Research and COVID-19