高强度紫外线空气净化装置对空气中细菌杀灭效能的试验研究  

Efficacy of high intensity ultraviolet light air purifier on inactivation of bacterial aerosol

作　　者：贾海泉 潘欣[2] 张宗兴 张金明 徐火炬 祁建城 

机构地区：[1]国家生物防护装备工程技术研究中心,天津300061 [2]第二军医大学,上海200433 [3]上海德威净化设备工程有限公司,上海200433

出　　处：《中华医院感染学杂志》2011年第10期2051-2053,共3页Chinese Journal of Nosocomiology

基　　金：国家"十一五"科技支撑计划课题(2008BAI62B01)

摘　　要：目的检测高强度紫外线空气净化装置UV Bio-Wall QUATTRO的紫外光线强度、臭氧产生量及其对一次性通过气流中白色葡萄球菌的杀灭效率。方法通过UVC 254紫外线辐照仪检测距离UV Bio-Wall QUAT-TRO单只灯管1 m处254 nm紫外光强度;通过GD 80臭氧检测仪检测UV Bio-Wall QUATTRO工作时臭氧的产生量;将UV Bio-Wall QUATTRO安装于检测管道中,在检测管道上游发生白色葡萄球菌气溶胶,通过位于UV Bio-Wall QUATTRO的上游、下游采样探头分别进行采样,进而评价UV Bio-Wall QUATTRO对一次性通过气流中白色葡萄球菌的杀灭效率。结果距UV Bio-Wall QUATTRO单支灯管1 m处254 nm波长紫外光强度为95μw/cm2;GD 80臭氧检测仪在UV Bio-Wall QUATTRO运行时未检测到臭氧的产生;通风量为1500m3/h,UV Bio-Wall QUATTRO对一次性通过气流中白色葡萄球菌的杀灭效率>99.38%,通风量为2000 m3/h,杀菌效率>98.00%,通风量为3000 m3/h,杀菌效率>91.50%。结论 UV Bio-Wall QUATTRO属于高强度无臭氧紫外线空气净化装置,具有杀灭瞬间通过的细菌气溶胶的作用;将其安装于空调或换气装置气流管道中可实现室内空气瞬时消毒。OBJECTIVE To test the UV radiation intensity and the ozone generation of UV Bio-Wall QUATTRO ultraviolet light air purifier and the Inactivation Efficiency of the device on bacterial aerosol in the flowing air stream which passes through the device just one time.METHODS The 254nm irradiance at the point 1 meter away from a single lamp of UV Bio-Wall QUATTRO was measured with UVC 254 dose measurer;when UV Bio-Wall QUATTRO ran the ozone generation of the device was detected with GD 80 ozone meter;UV Bio-Wall QUATTRO was installed in the test duct and bacterial aerosol was generated at the upstream of the test duct.Then bacterial aerosol was sampled through the upstream and downstream sampling probes respectively,based on which the inactivation efficiency of UV Bio-Wall QUATTRO on bacterial aerosol in the flowing air stream which passed through the device just one time was assessed.RESULTS The 254nm UV radiation intensity at the point 1 meter away from a single lamp of UV Bio-Wall QUATTRO was 95μw/cm2;ozone was not detected with GD 80 ozone meter when UV Bio-Wall QUATTRO ran;The inactivation Efficiency of UV Bio-Wall QUATTRO on bacterial aerosol in the flowing air stream which passes through the device was 99.38%,98.00% and 91.50% on the condition that the air flow rate through the duct was 1500m3/h,2000m3/h and 2500m3/h respectively.CONCLUSION UV Bio-Wall QUATTRO is a kind of high intensity ultraviolet light air purifier which can inactivate bacteria that fly through the device and dose not generate ozone.It can be used for indoor air instantaneous decontamination when the device is mounted in the duct of air conditioner or ventilator.

关 键 词：紫外线 细菌气溶胶 空气消毒 

分 类 号：R187.4[医药卫生—流行病学]