一种二氧化氯消毒剂杀菌效果与腐蚀性的检测

为了解一种二氧化氯消毒剂的杀菌效果与腐蚀性，进行了悬液定量杀菌试验与金属腐蚀试验。结果，以含二氧化氯１５０ ｍｇ／Ｌ溶液对悬液中枯草杆菌黑色变种芽胞作用１５ｍｉｎ，对悬液中大肠杆菌与金黄色葡萄球菌分别以含二氧化氯１５ ｍｇ／Ｌ与２０ｍｇ／Ｌ溶液作用８ｍｉｎ，杀灭率均为１００％。未加酸活化的该剂于５４℃放置１４ ｄ，二氧化氯含量下降率为６３％。该剂含二氧化氯１５０ ｍｇ／Ｌ溶液对铜、铝、碳钢、不锈钢的腐蚀速率分别为０．０２２７、０．０１５３、０．０２９７、０．０１２３ｍｍ／ａ。该剂为杀菌效果、稳定性较好，对金属有轻度腐蚀作用的消毒剂。

EXAMINATION OF GERMICIDAL EFFICACY AND CORROSIVENESS OF A CHLORINE DIOXIDE DISINFECTANT

In order to know the germicidal efficacy and corrosiveness of a chlorine dioxide disin- fectant, suspension quantitative germicidal test and metal corrosion test were carried out. The results showed that the killing rates of Bacillus subtilis var. niger spores in suspension exposed to a solution containing chlorine dioxide 150 mg/ L for 15 min, Escherichia coli in suspension exposed to a solution containing chlorine dioxide 15 mg/ L for 8 min and Staphylococcus aureus in suspension exposed to a solution containing chlorine dioxide 20 mg / L for 8 min were 100%. After storing at 54℃ for 14 days, the chlorine dioxide content of this binary disin- fectant decreased by 6.3%. The corrosion rates of copper, aluminum, carbon steel and stain- less steel immersed in the disinfectant solution containing chlorine dioxide 150 mg/ L were 0.0227, 0.0153, 0.0297 and 0.0123 mm/a respectively. This disinfectant is a disinfectant with good germicidal efficacy and stability and slight corrosive effect on metals.