Disinfection effect of two types of air dynamic disinfection methods in windowless outpatient consulting rooms in hospitals
Objective To investigate the effect of plasma air disinfection machine and circulating air ultraviolet air disinfection machine on the air dynamic disinfection of windowless clinics in hospital outpatient clinics.Methods Two kinds of air disinfection machines were placed in two windowless clinics with the same area and similar layout in a hospital,and the two clinics were disinfected under the same temperature and humidity conditions,and the air samples were carried out before disinfection and 1,2 and 3 h after disinfection by sedimentation method to calculate the killing rate.Results The number of colonies in the air in the two clinics before disinfection were 6.07 and 4.12 cfu/(5 min·dish),respectively,and the killing rates of the plasma air disinfection machine were 85.76%,94.70%,and 59.40%after 1,2,and 3 h of disinfection,respectively.The killing rates of the circulating air ultraviolet air disinfection machine were 64.52%,75.03%,and 39.08%,respectively,and the killing rate of the plasma air disinfection machine at different time points was higher than that of the circulating air ultraviolet air disinfection machine(P<0.05).The highest killing rate of the two air disinfection machines was at 2 h after disinfection.Conclusion The two kinds of air disinfection machines can reduce the number of bacterial colonies in the air,and the plasma air disinfection machine has a better effect.
air dynamic disinfectionwindowless outpatientdisinfection effect
万方数据
维普
