Objective To investigate the killing effect of pulsed electromagnetic plasma on bacteria, fungi, spores, enveloped viruses, 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, Escherichia coli, Candida albicans, and Bacillus subtilis var. niger spores and a log reduction value of >4.00 for poliovirus I (PV-Ⅰ) and human coronavirus HCoV-229E. The concentration of ozone generated was below the limits for ozone in the Standards for Indoor Air Quality (GB/T 18883-2022).
Conclusion Pulsed electromagnetic plasma has a marked killing effect on bacteria, fungi, spores, enveloped viruses, and non-enveloped viruses, with the characteristics of rapid action, residue-free outcomes, and low costs.
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