微酸性电解水对物体表面擦拭消毒的效果评价

摘要：目的 评价一种新型绿色消毒剂----微酸性电解水在医院物体表面擦拭消毒的效果。方法 分别应用微酸性电解水和500 mg/L有效氯溶液对2组床旁桌台面进行擦拭消毒，进行消毒前、消毒后5分钟、 4小时和8小时的微生物采样，比较2种消毒液的细菌杀灭率和消毒持久性。结果 微酸性电解水对物体表面擦拭消毒后5分钟的杀菌率为99.32%，优于500mg/L有效氯溶液的97.74%，差异有统计学意义（P＜0.01）。2组台面擦拭消毒后不同时段细菌培养的合格率均有下降，消毒后8小时微酸性电解水组和有效氯溶液组的合格率分别仅为62.9%和54.3%，差异无统计学意义（P＞0.05），结论 微酸性电解水的即时杀菌效果优于含氯消毒剂，基于其更安全环保，推荐临床推广应用；但物表消毒后易再次污染，应加强消毒频率。

Disinfection Efficacy of Surface Wiping with Slightly Acidic Electrolyzed Water

Objective To evaluate the disinfection efficacy of a novel disinfectant, slightly water （SLAEW） in surface wiping. Methods In January 2012 the countertops of bedside acidic electrolyzed tables in a hospital were disinfected with SLAEW and 500 mg/L chlorine solution respectively. Microbial samples were collected before disinfection,and 5 min,4 h and 8 h after disinfection. The bacterial killing rate and the disinfection persistence were compared between the two groups. Results The average bacterial killing rate at 5 min after SLAEW disinfection was 99.32% , better than 97.74% of 500 mg/L chlorine solution （ P 〈 0.01 ）. The average total bacterial counts at different time points after disinfection in the two groups increased. After 8 h the total bacterial counts in both two groups increased, higher than the national standard of 10 cfu/cm2, but the difference between the two groups was not statistically significant （P 〉 0.05）. Condusion The immediate bactericidal effect of SLAEW is superior to chlorine disinfectant in addition to more safety and environmental protection. It is recommended for use in clinic. Because the surface chould be easily recontaminated after disinfection, the disinfection frequency should be increased.