Study on the killing effect of xenon light transfer chamber on four kinds of athogenic bacteria
Objective To explore the disinfection effect of xenon light transfer chamber in public health event isolation places or infectious disease isolation wards when contaminated items were transferred from contaminated areas to clean areas.Methods The carrier quantitative sterilization test method was used to compare the disinfection effect of xenon light transfer chambers on different concentrations of pathogenic microorganisms for different times.Results When the glass bacterial plates of Escherichia coli were disinfected by the xenon light transfer chamber,the killing log values of bacterial plates with 103 cfu/piece disinfected for 1～5 min and bacterial plates with 104,105 and 106 cfu/piece disinfected for 3～5 min could all achieve>3,while the killing log values of bacterial plates with 104,105 and 106 cfu/piece disinfected for 1～2 min were all<3.When the glass bacterial plates of Staphylococcus aureus were disinfected by the xenon light transfer chamber,the killing log values of bacterial plates with 103,104,105,and 106 cfu/piece disinfected for 1～5 min could all reach>3.When the glass bacterial plates of spores of Bacillus subtilis var niger and Candida albicans were disinfected by the xenon light transfer chamber,the killing log values of bacterial plates with 103,104,105,and 106 cfu/piece disinfected for 1～5 minutes were all<3.Conclusion The xenon light transfer chamber can achieve non-contact,automated and effective disinfection,with short-time consumption and environmental friendliness,and can effectively reduce the load of pathogenic microorganisms on the surface of objects.During application,disinfection procedure should be determined according to the type and load concentration of contaminated pathogenic microorganisms to ensure effective disinfection effects.
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万方数据
维普
