Preliminary study on the disinfection performance of a hypobromous acid generator
Objective To observe the germicidal efficacy of the disinfectant produced by a hypobromous acid generator and to explore the feasibility of its application.Methods Physicochemical analysis method and suspension quantitative germicidal test were used to observe the properties and germicidal efficacy of the bromine-containing disinfectant.Results Under the set conditions,the generator could produce disinfectant containing about 1 300 mg/L of available bromine.Staphylococcus aureus and Escherichia coli in suspension were exposed to the disinfectant containing 100 mg/L of available bromine for 5 min,and the killing log values were all>5.00;Pseudomonas aeruginosa and Candida albicans were exposed to the disinfectant containing 200 mg/L of available bromine for 5 min,and the average killing log value of Pseudomonas aeruginosa was>5.00 and the average killing log value of Candida albicans was>4.00;The spores of Bacillus subtilis var niger were treated with the disinfectant containing 500 mg/L of available bromine for 15 min,and the average killing log value was>5.00.The polioviruses were treated with the disinfectant containing 500 mg/L of available bromine for 10 min,and the average killing log value was>4.00.The metal pieces were soaked in the disinfectant containing 500 mg/L of available bromine for 72 h,there was slight corrosion for stainless steel,copper and aluminum,and moderate corrosion for carbon steel.Conclusion The disinfectant has good germicidal efficacy to the bacterial propagules,fungi,bacterial spores and poliovirus.
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