二溴海因消杀片消毒相关性能的实验观察

EXPERIMENTAL OBSERVATION OF DISINFECTION-RELATED PERFORMANCE OF DIBROMOHYDANTOIN DISINFECTION TABLET

目的观察二溴海因消杀片理化性能和杀菌效果。方法以悬液定量杀菌试验和理化分析方法,对该二溴海因消杀片杀菌效果以及理化性能进行实验室观察。结果该二溴海因片剂有效溴含量为质量分数26%;54℃储存14 d,有效溴下降率为0.23%。用含有效溴1000 mg/L的该消杀片溶液浸泡作用72 h,对不锈钢基本无腐蚀,对其他金属中度腐蚀。以含有效溴300 mg/L的该消杀片溶液作用10 min,对悬液内大肠杆菌和金黄色葡萄球菌的杀灭对数值分别为5.74和5.46。用含有效溴3500 mg/L的该消杀片溶液作用120 min,对枯草杆菌黑色变种芽孢的杀灭对数值为5.21。结论二溴海因消杀片性能稳定,腐蚀性低,杀菌效果良好。

Objective To observe physical and chemical properties and germicidal efficacy of dibromohydantoin （DBH） disinfection table. Methods Suspension quantitative bactericidal test and physical and chemical analysis methods were used to carry out laboratory observation. Results The DBH tablet contained 26% （m/m） available bromine. The availa- ble bromine decreased by 0.23% after storing at 54~C for 14 d. Immersion in the DBH disinfection tablet solution contai- ning available bromine 1000 mg/L for 72 h caused essentially no corrosion of stainless steel, moderate corrosion of copper, aluminum and carbon steel. The killing logarithm values of Escherichia coli and Staphylococcus aureus in suspension exposed to the disinfection tablet solution containing available bromine 300 mg/L for 10 min were 5.74 and 5.46 respectively. The killing logarithm value of spores of Bacillus subtilis var. niger exposed to the disinfection tablet solution containing available bromine 3500 mg/L for 120 rain was 5.21. Conclusion Dibromohydantoin disinfection tablet has good germici- dal efficacy and stability, it has low corrosiveness to metals.