新型低温等离子体消毒机空气消毒效果的试验研究  被引量:8

Experimental study of disinfection effect of a new low-temperature plasma disinfector

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作  者:马彩琴 许桂敏 王香妮 崔怡馨 刘娜 石兴民[1] 张冠军[3] MA Caiqin;XU Guimin;WANG Xiangni;CUI Yixin;LIU Na;SHI Xingmin;ZHANG Guanjun(School of Medicine,Xi’an Jiaotong University,Xi’an 710061;School of Electronic and Control Engineering,Chang’an University,Xi’an 710061;School of Electrical Engineering,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区:[1]西安交通大学公共卫生学院,陕西西安710061 [2]长安大学电子与控制工程学院,陕西西安710061 [3]西安交通大学电气工程学院,陕西西安710049

出  处:《西安交通大学学报(医学版)》2021年第5期774-779,共6页Journal of Xi’an Jiaotong University(Medical Sciences)

基  金:国家自然科学基金面上项目(No.52041702);长安大学研究生科研创新实践项目(No.300103714007)。

摘  要:目的观察新型低温等离子体空气消毒机对自然环境和人工染菌环境中微生物的灭活效果,进一步确定最低有效处理参数。方法首先在0.5 m^(3)的超净工作台和1.05 m^(3)的密闭有机玻璃腔体内,用新型低温等离子空气消毒机对空气中自然菌进行不同参数下的灭活处理,其次在1.05 m^(3)的密闭有机玻璃腔体内,人工喷洒金黄色葡萄球菌和大肠杆菌,用低温等离子空气消毒机进行处理,最后采用平板计数法评价该消毒机对空气中自然菌和人工菌的灭活效果。结果低温等离子体空气消毒机在0.5 m^(3)和1.05 m^(3)密闭空间内,灭活自然菌的最低有效处理参数为13 kV、5 min或12 kV、10 min;低温等离子体空气消毒机在13 kV放电电压下处理20 min后,与处理前相比,其对大肠杆菌和金黄色葡萄球菌的杀灭率显著增加(P<0.0001),均可达到消毒规范要求[100%、(99.98±0.01)%≥99.90%]。结论新型低温等离子体空气消毒机对自然菌和人工菌的灭活均达到《消毒技术规范》规定的消毒合格标准。Objective To observe the inactivation effect of a new low-temperature plasma air disinfector on microorganisms in the natural environment and artificial contaminated environment so as to further determine the minimum effective processing parameters.Methods First,in 0.5 m^(3) of super clean workbench and 1.05 m^(3) airtight organic glass cavity in the body,the new low-temperature plasma air disinfector developed was used to inactivate the natural bacteria in the air under different parameters.Then in 1.05 m^(3) airtight organic glass cavity in the body,the new low-temperature plasma air disinfector was used to treat the Staphylococcus aureus and Escherichia coli under the condition of artificial bacteria spraying.Last,the plate counting method was used to evaluate the inactivation effect of the disinfector on natural bacteria and artificial bacteria in the air.Results For the low-temperature plasma air disinfector in 0.5 m^(3) and 1.05 m^(3) confined space,the lowest effective treatment parameters for inactivated natural bacteria were 13 kV,5 min or 12 kV,10 min.For the low-temperature plasma air disinfection machine in 13 kV discharge voltage treatment of different time,compared with before treatment,the killing rate of Escherichia coli and Staphylococcus aureus increased significantly after treatment for 20 min(P<0.0001).Both could meet the requirements of disinfection specifications[100%,(99.98±0.01)%≥99.90%].Conclusion The inactivation of natural bacteria and artificial bacteria by the new low-temperature plasma air disinfector has reached the qualified standard of disinfection stipulated in Technical Specifications for Disinfection.

关 键 词:低温等离子体空气消毒机 消毒效果 自然菌 人工染菌 

分 类 号:R187[医药卫生—流行病学]

 

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