Study on the disinfection effect and influencing factors of LED ultraviolet disinfection device
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.
LED ultraviolet disinfection deviceUV chipdisinfection effectinfluencing factors
万方数据
维普
