医院环境空气及物表次氯酸雾化消毒效果

Effect of hypochlorous acid atomization disinfection in ambient air and physical surface of the hospital

目的观察雾化次氯酸形成气溶胶对医院空气及物表微生物的消毒净化效果。方法采用现场消毒试验方法,以500 ml/h的雾化量流速释放次氯酸消毒液,分别消毒前和消毒作用1、3、5、10 min后对环境空气和物体表面进行采样和检测,评价雾化次氯酸的消毒效果。结果以次氯酸进行雾化消毒,分别在消毒1、3、5 min后,空气中的大肠埃希菌、金黄色葡萄球菌、枯草杆菌黑色变种芽孢杀灭率均达到了100.00%;用该次氯酸消毒液对物体表面进行雾化消毒,5 min后木质表面上的大肠埃希菌杀灭率达到了100.00%;消毒10 min后,木质表面上的金黄色葡萄球菌、枯草杆菌黑色变种芽孢杀灭率达到了100.00%。结论通过雾化次氯酸消毒液可快速有效地杀灭空气中及物体表面上的微生物。

OBJECTIVE To observe the effect of aerosol formed by atomized hypochlorous acid on disinfection and purification of microorganisms in the air and object surface of hospital. METHODS Using the on-site disinfection test method, the hypochlorous acid disinfectant was released at an atomization flow rate of 500 ml/h, and the ambient air and object surface were sampled and tested before disinfection and 1 min, 3 min, 5 min and 10 min after disinfection, respectively, to evaluate the disinfection effect of atomized hypochlorous acid. RESULTS After disinfecting with hypochlorous acid for 1 min, 3 min and 5 min, respectively, the killing rate of Escherichia coli, Staphylococcus aureus and Bacillus subtilis in the air reached 100.00%;after 5 minutes disinfection of the object surface with hypochlorous acid, the killing rate of E. coli on the wood surface reached 100.00%;after disinfecting for 10 min, the killing rate of S. aureus and B. subtilis spores on the wood surface was 100.00%. CONCLUSION The microorganisms in the air and on the surface of the object can be killed quickly and effectively by atomizing hypochlorous acid disinfectant.