一种LED紫外线照射装置对不同材质表面的消毒效果观察  

Observation on the disinfection effect of a LED ultraviolet irradiation device on surfaces of different materials

作　　者：刘通 周金华 欧阳晨义 李晓宁[1] 陈宗遒 袁俊[1] LIU Tong;ZHOU Jin-hua;OU-YANG Chen-yi;LI Xiao-ning;CHEN Zong-qiu;YUAN Jun(Guangzhou Center for Disease Control and Prevention,Guangzhou Health Supervision Institute,Guangzhou 510440,China;Shenzhen Uvled Optoelectronic Technology Co.,Ltd.;Guangzhou Municipal Health Commission)

机构地区：[1]广州市疾病预防控制中心、广州市卫生监督所,广东广州510440 [2]深圳市钰创合成光电技术有限公司 [3]广州市卫生健康委员会

出　　处：《中国消毒学杂志》2025年第3期172-174,共3页Chinese Journal of Disinfection

基　　金：广州市卫生健康科技项目(20241A011059);2023年度广州市校(院)企联合资助专题(2023A03J0453)。

摘　　要：目的 观察一种LED紫外线(主波长为270 nm)照射装置对不同材质物体表面上微生物的杀灭效果,为精准消毒提供参考。方法 采用载体定量杀菌试验方法,该LED紫外线照射装置以250μW/cm^(2)辐照度照射不同材质表面污染的金黄色葡萄球菌、大肠埃希菌或人冠状病毒(HCoV-229E),观察杀灭效果。结果 该装置照射32和80 s后,即总照射剂量为8和20 mJ/cm^(2)条件下,实现对布片、玻片、不锈钢片、塑料片和木片上污染的细菌与人冠状病毒的杀灭率>99.0%。LED紫外线灯对不同材料表面的微生物杀灭效果存在差异,不锈钢和塑料表面上的微生物较其他材质表面更易于杀灭。结论 本研究使用LED紫外线照射装置可快速有效杀灭物体表面的微生物。Objective To observe the microbial inactivation effects of a LED ultraviolet(UV)irradiation device on different types of object surfaces,which device primarily emitting at a wavelength of 270 nm,so as to provide a reference for accurate disinfection.Methods Using a carrier quantitative bactericidal test method,the LED UV device irradiated at an intensity of 250μΩ/cm on surfaces contaminated with Staphylococcus aureus,Escherichia coli,and human coronavirus(HCoV-229E).The bactericidal effects on various carriers were observed.Results After 32 s and 80 s of irradiation,corresponding to total doses of 8 mJ/cm^(2) and 20 mJ/cm^(2) respectively,the inactivation rates of bacteria and human coronavirus on contaminated surfaces,including fabric,glass slides,stainless steel sheets,plastic sheets,and wood chips exceeded 99.0%.Notably,the microbial inactivation efficacy of the LED UV device varied across different materials,with microorganisms on stainless steel and plastic surfaces showing significantly higher susceptibility to inactivation than those on other materials.Conclusion The LED UV irradiation device utilized in this study is capable of rapidly and effectively inactivating microorganisms on various object surfaces.

关 键 词：LED紫外线 物体表面 消毒效果 

分 类 号：R187.4[医药卫生—流行病学]