Attenuation rules and germicidal efficacy of ozoneted water
10.11817/j.issn.1672-7347.2018.02.006
- VernacularTitle:臭氧水浓度衰减及其杀菌作用
- Author:
Jianyun LU
1
;
Miaomiao LI
;
Lihua GAO
;
Yizhi PAN
;
Yaping XIANG
;
Jinhua HUANG
;
Xianzhen JIANG
Author Information
1. 中南大学湘雅三医院皮肤科
- Keywords:
ozonated water;
concentration attenuation;
sterilization
- From:
Journal of Central South University(Medical Sciences)
2018;43(2):143-146
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To determine initial concentrations of ozonated water under different temperatures,attenuation rules ofozonated water under the room temperature (25 ℃),and to inspect the effects ofozonated water under different concentrations on common microorganisms.Methods:The online test method and the plate cultivation method were employed to check the concentrations and killing rates on common microorganisms of ozonated water produced by HZ-2601 B Ozone Water Generating Instrument.Results:The initial concentrations of ozonated water at 20,25,30,35,and 40 ℃ were 4.38,4.26,3.12,2.76,and 1.31 mg/L,respectively.The ozonated water was rapidly attenuated at first 10 min.The concentration ofozonated water still remained at 1.06 mg/L and 0.37 mg/L at 25 and 30 ℃ after 30 min.The average killing rates for Pseudornonas aeruginosa,Escherichia coli,Staphylococcus aureus,methicillin-resistant Staphylococcus aureus,and Candida albicans in 1.0 mg/L ozonated water for 1 min were 99％,100％,100％,100％,and 100％,respectively.The average killing rates of Escherichia coli,Staphylococcus aureus,methicillin-resistant Staphylococcus aureus,Pseudomonas aeruginosa,and Candida albicans in 0.3 mg/L ozonated water for 1 min were 100％,100％,100％,95％,and 92％,respectively.Conclusion:The initial concentrations of ozonated water produced by HZ-2601 B Ozone Water Generating Instrument decrease with the increase of temperature.Ozonated water under 20-30 ℃ has good sterilization effect on common microorganisms.
