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目的 探讨DF Ⅰ型消毒洗涤剂的杀菌作用。方法 用含 5 0、75、10 0mg/L有效消毒剂对金黄色葡萄球菌与大肠杆菌分别作用 5、3、10min ,观察小牛血清对杀菌作用影响 ;取使用浓度消毒液室温 ( 18～ 3 2℃ )放置 ,用碘量法测定有效碘含量 ,计算有效碘降解率。结果 重复实验证明 ,对金黄色葡萄球菌及大肠杆菌平均杀灭率均达 99 90 % ,有效碘含量为 10 0mg/L的水溶液 ,作用 10min ,对大肠杆菌平均杀灭率达 10 0 %。原液室温放置 6个月 ,有效碘含量下降 9 41%。结论 DF Ⅰ型消毒洗涤剂对金黄色葡萄球菌与大肠杆菌有较强杀灭作用 ,杀菌作用随有效碘含量与作用时间增加而加强 ,随有机物增多而减弱 ,室温放置 6个月 ,有效碘含量下降≤ 9 41%。
Objective To investigate the bactericidal effect of DF Ⅰ disinfectant. Methods Staphylococcus aureus and Escherichia coli were treated with 50, 75 and 10 mg / L of effective disinfectant for 5, 3 and 10 min, respectively. The effects of calf serum on bactericidal activity were observed. 2 ℃) was placed, with the determination of iodine content of effective iodine, calculate the effective iodine degradation rate. Results Repeated experiments showed that the average killing rate of Staphylococcus aureus and Escherichia coli reached 99 90% and the effective iodine content was 10 0 mg / L. The average killing rate of E. coli reached 10% after 10 min. The stock solution was placed at room temperature for 6 months, and the effective iodine content decreased by 9 41%. Conclusion DF Ⅰ disinfectant has a strong killing effect on Staphylococcus aureus and Escherichia coli. The bactericidal effect of DF Ⅰ disinfectant is strengthened with the increase of effective iodine content and action time, and decreases with the increase of organics. After 6 months of storage, the effective iodine content Decline ≤ 9 41%.