二元固体二氧化氯消毒剂消毒性能的试验观察

目的观察二元固体二氧化氯消毒剂消毒相关性能。方法采用悬液定量杀菌试验和现场试验方法进行了检测。结果该二元固体二氧化氯制剂活化后二氧化氯含量为9206 mg/L。含量为300 mg/L的二氧化氯消毒剂溶液,作用2.5 min,对悬液内大肠杆菌及金黄色葡萄球菌平均杀灭对数值均>5.00;含量1000 mg/L二氧化氯消毒剂溶液,作用10 min,对悬液内枯草杆菌黑色变种芽孢平均杀灭对数值均>5.00。用含量500 mg/L二氧化氯消毒液喷洒桌面至潮湿,作用10 min,对其表面上自然菌的平均杀灭对数值>1.0;用含量1000 mg/L二氧化氯溶液,气溶胶喷雾消毒作用30 min,对室内空气中自然菌平均消亡率为97.13%。结论该二氧化氯消毒剂对细菌繁殖体和细菌芽孢具有较强杀灭作用,对现场物体表面和室内空气中自然菌杀灭效果达到合格要求。

EXPERIMENTAL OBSERVATION ON DISINFECTION PROPERTIES OF BINARY SOLID CHLORINE DIOXIDE DISINFECTANT

Objective To observe the disinfection-related properties of binary solid chlorine dioxide disinfectant.Methods Suspension quantitative germicidal test and on-thespot trial method were used to carry out examination.Results The chlorine dioxide content of the binary solid chlorine dioxide preparation after activation was 9206 mg/L.The average killing logarithm values of Escherichia coli and Staphylococcus aureus in suspension exposed to the disinfectant solution containing chlorine dioxide 300 mg/L for 2.5 min were >5.00.The average killing logarithm value of Bacillus subtilis var.niger spores in suspension exposed to the disinfectant solution containing chlorine dioxide 1000 mg/L for 10 min was >5.0.Spraying the disinfectant solution containing chlorine dioxide 500 mg/L on the table surface to moistening with a contact time of 10 min killed the natural bacteria on the surface by a logarithm value >1.0 in average.Aerosol spraying disinfection with the disinfectant solution containing chlorine dioxide 100 mg/L for 30 min caused 96.13% decay rate in average of the natural bacteria in indoor air.Conclusions The chlorine dioxide disinfectant has relatively strong killing effect on vegetative forms of bacteria and bacterial spores.Its efficacy in killing natural bacteria on on-the-spot surfaces and in indoor air fulfils eligible requirement.