苯扎溴铵消毒液杀菌试验观察

目的]探讨苯扎溴铵消毒液对金黄色葡萄球菌、大肠埃希菌、绿脓杆菌的杀菌效果。方法]采用工作液直接接种法进行试验观察。结果]苯扎溴铵对大肠埃希菌、绿脓杆菌基本无杀菌作用，对金黄色葡萄球菌有良好的杀菌效果，且应选择浓度≥0．10％的苯扎溴铵作用10min以上具有完全杀菌效力。结论]苯扎溴铵浓度≥0．10％时，适用于对金黄色葡萄球菌消毒。

Observation on Germicidal Efficacy of Benzalkonium Bromide Disinfectant Solution

Objective] The research aimed to know the germicidal efficacy of benzalkonium bromide disinfectant solution on Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa. Method] Working fluid direct inoculation method was carried out for experimental observation. Result] Benzalkonium bromide had no germicidal effect on Escherichia coli and Pseudomonas aeruginosa, but it had a efficacious effect on Staphylococcus aureus. For Staphylococcus aureus, the concentrations of benzalkonium bromide should be more than 0. 10% and it was used for more than 10 minutes to complete germicidal efficacy. Conclusion] Benzalkonium bromide concentrations that was more than 0. 10% could be used for the disinfection of Staphylococcus aureus.