摘要
目的研究LED紫外消毒装置消毒效果及其影响因素。方法采用载体定量杀菌试验方法,对某LED紫外消毒装置的杀菌效果及其影响因素进行观察。结果该LED紫外消毒装置内装54个波长270~280 nm紫外线芯片,启动照射1 min对玻片上大肠埃希菌和金黄色葡萄球菌均达到全部杀灭;照射30 s对玻片上白念珠菌杀灭率可达到99.99%;照射120 s对玻片上枯草杆菌黑色变种芽孢杀灭率可达到99.99%;照射90 s对玻片上脊髓灰质炎病毒灭活感染滴度对数值为5.10。载体材质、照射距离、辐射剂量、有机物和水分等因素均对LED紫外消毒装置消毒效果产生影响。结论该LED紫外消毒装置能够有效杀灭细菌繁殖体、病毒和细菌芽孢,其消毒效果受较多因素的影响。
Objective To investigate the disinfection effect and influencing factors of LED ultraviolet disinfection device.Methods Using the carrier quantitative bactericidal test method,the bactericidal effect and influencing factors of LED ultraviolet disinfection device were observed.Results The LED ultraviolet disinfection device was equipped with 54 UV chips with wavelengths ranging from 270 to 280 nm.After 60 s of irradiation,Escherichia coli and Staphylococcus aureus on glass slide were completely killed;the killing rate of Candida albicans on glass slide could reach 99.99%after 30 s of irradiation;the killing rate of spores of Bacillus subtilis var niger on glass slide could reach 99.99%after 120 s of irradiation;the log value of inactivated infection titer of poliovirus on glass slide was 5.10 after 90 s of irradiation.Factors such as the carrier material,irradiation distance,radiation dose,organic matter,and moisture had impacts on the disinfection effect of LED ultraviolet disinfection device.Conclusion The LED ultraviolet disinfection device can effectively kill bacterial propagules,viruses,and bacterial spores,but its disinfection effect is influenced by many factors.
作者
邵子轩
魏秋华
任哲
沙斯烁
费春楠
韩杰
SHAO Zi-xuan;WEI Qiu-hua;REN Zhe;SHA Si-shuo;FEI Chun-nan;HAN Jie(Tianjin Medical University,Tianjin 300070,China;Chinese PLA Center for Disease Control and Prevention;Tianjin Center for Disease Control and Prevention)
出处
《中国消毒学杂志》
CAS
2024年第7期481-484,共4页
Chinese Journal of Disinfection
关键词
LED紫外消毒装置
紫外线芯片
消毒效果
影响因素
LED ultraviolet disinfection device
UV chip
disinfection effect
influencing factors
