溴氯甘脲类消毒剂杀菌效果的试验观察

为了解溴氯甘脲类消毒剂杀菌效果,采用载体定量杀菌试验进行了实验室观察。结果,以有效氯含量为56.7 mg/L的四氯甘脲水溶液,对大肠杆菌和金黄色葡萄球菌作用5 m in,平均杀灭率达到99.9%以上。以有效溴氯含量(mg/L)分别为一溴甘脲74.53、二溴甘脲91.86、三溴甘脲110.08,对大肠杆菌和金黄色葡萄球菌作用1m in,平均杀灭率达到99.95%以上。以有效溴含量为63.94 mg/L的四溴甘脲水溶液对大肠杆菌和金黄色葡萄球菌作用3 m in,平均杀灭率均达到99.96%。结论,氯溴甘脲类消毒剂对细菌繁殖体具有良好的杀灭效果,其杀菌效果随有效溴含量增加而增强。

EXPERIMENTAL OBSERVATION ON GERMICIDAL EFFICACY OF BROMOCHLOROGLYCOLURIL GROUP DISINFECTANTS

In order to know the germicidal efficacy of bromochloroglycoluril group disinfectants,carrier quantitative germicidal test was used to carry out laboratory observation.Results: The average killing rates of Escherichia coli and Staphylococcus aureus exposed to water solution of tetrachloroglycoluril containing available chlorine 56.7 mg/L for 5 min were over 99.9%,those of E.coli and S.aureus exposed to monobromoglycoluril,dibromoglycoluril and tribromoglycoluril containing available bromine and chlorine 74.53,91.86 and 110.08 mg/L respectively for 1 min were over 99.95% and those of E.coli and S.aureus exposed to tetrabromoglycoluril containing available bromine 63.94 mg/L for 3 min were(99.96%.) Conclusion: The chlorobromoglycoluril group disinfectants have good efficacy in killing vegetative forms of bacteria and its germicidal efficacy is enhanced with increasing available bromine content.