氙光传递舱对4种病原菌的杀灭效果研究

Study on the killing effect of xenon light transfer chamber on four kinds of athogenic bacteria

目的探索氙光传递舱在公共卫生事件隔离场所或传染病隔离病房物品从污染区传递至清洁区时的消毒效果。方法采用载体定量杀菌试验方法,比较氙光传递舱对不同浓度的病原微生物作用不同时间的消毒效果。结果氙光传递舱对大肠埃希菌的玻璃菌片消毒时,对10^(3)cfu/片的菌片作用1~5 min,10^(4)、10^(5)、10^(6)cfu/片的菌片作用3~5 min均能达到杀灭对数值>3,对10^(4)、10^(5)、10^(6)cfu/片的菌片作用1~2 min杀灭对数值均<3;对金黄色葡萄球菌的玻璃菌片消毒时,10^(3)、10^(4)、10^(5)、10^(6)cfu/片的菌片作用1~5 min均能达到杀灭对数值>3;对枯草杆菌黑色变种芽孢和白色念珠菌的玻璃菌片消毒时,10^(3)、10^(4)、10^(5)、10^(6)cfu/片的菌片作用1~5 min的杀灭对数值均<3。结论氙光传递舱可实现非接触式、自动化有效消毒,耗时短,对环境友好,可有效降低物体表面病原微生物负载。在应用时,应根据污染的病原微生物类型及负载浓度确定消毒程序,以保证有效消毒效果。

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 10^(3)cfu/piece disinfected for 1~5 min and bacterial plates with 10^(4),10^(5)and 10^(6)cfu/piece disinfected for 3~5 min could all achieve>3,while the killing log values of bacterial plates with 10^(4),10^(5)and 10^(6)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 10^(3),10^(4),10^(5),and 10^(6)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 10^(3),10^(4),10^(5),and 10^(6)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.