Killing effect of pulsed electromagnetic plasma on microorganisms
Objective To investigate the killing effect of pulsed electromagnetic plasma on bacteria,fungi,spores,enveloped vi-ruses,and non-enveloped viruses.Methods The Technical Standard for Disinfection(2002 edition)was used to evaluate the killing effect of pulsed electromagnetic plasma on bacteria,fungi,spores,enveloped viruses,and non-enveloped viruses.Results After treatment for 1.5 minutes,pulsed electromagnetic plasma showed a log reduction value of＞3.00 against Staphylococcus aureus,Esche-richia coli,Candida albicans,and Bacillus subtilis var.niger spores and a log reduction value of＞4.00 for poliovirus Ⅰ(PV-Ⅰ)and hu-man coronavirus HCoV-229E.The concentration of ozone generated was below the limits for ozone in the Standards for Indoor Air Qual-ity(GB/T 18883-2022).Conclusion Pulsed electromagnetic plasma has a marked killing effect on bacteria,fungi,spores,enve-loped viruses,and non-enveloped viruses,with the characteristics of rapid action,residue-free outcomes,and low costs.
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