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目的研究一种西地碘粉杀菌效果及其影响因素,为消毒应用提供科学依据。方法采用悬液定量杀菌试验方法,对一种西地碘粉的杀菌效果及其影响因素进行实验室观察。结果以含有效碘12.5 mg/L的西地碘粉溶液作用5 min,对悬液内金黄色葡萄球菌杀灭率达到100%。西地碘粉消毒液杀菌最佳适宜温度在20℃~40℃之间,p H值宜小于5.5,有效碘浓度不低于12.5 mg/L,作用时间不小于10 min。菌悬液中小牛血清浓度达到50%以上即明显使西地碘粉杀菌效果下降。结论西地碘粉对常见致病菌体具有良好的杀菌效果,但其杀菌作用受诸多因素的影响,使用中应予以注意。
Aim To study the bactericidal effect and influencing factors of iodine powder in west China and provide a scientific basis for the disinfection application. Methods The method of suspension quantitative sterilization was used to observe the bactericidal effect and influencing factors of a western iodine powder. Results The iodine powder containing iodine 12.5 mg / L for 5 min, the killing rate of Staphylococcus aureus in suspension reached 100%. The optimum temperature for disinfection of iodine powder disinfectant in the west is between 20 ℃ ~ 40 ℃, the p H value should be less than 5.5, the effective iodine concentration should be no less than 12.5 mg / L and the action time should not be less than 10 min. Fungus suspension of calf serum concentration of 50% or more significantly reduced the iodine powder bactericidal effect. Conclusion Western iodine powder has a good bactericidal effect on common pathogens, but its bactericidal effect is affected by many factors and should be paid attention to.