功能水中含过氧化氢的负离子发生器消毒室内空气效果的观察

OBSERVATION ON EFFICACY OF NEGATIVE ION GENERATOR USING FUNCTIONAL WATER CONTAINING HYDROGEN PEROXIDE IN DISINFECTION OF INDOOR AIR

试验表明，功能水中加有０６％过氧化氢的负离子发生器，在常温常湿下作用９０ｍｉｎ，可将室内空气中金黄色葡萄球菌等细菌繁殖体减少９９９９％以上，明显大于仅以负离子作用者。其效果可受过氧化氢浓度、室温与相对湿度影响。消毒时，对人无刺激性。产生的臭氧和氮氧化合物，低于国家允许标准。

he negative ion generator produces negative ions by impulsion of water In the experiment, hydrogen peroxide was added to the functional water in the generator and the efficacy in disinfection of indoor air was observedThe results indicated that after exposure to negative ions ( at a concentration of 5000～32000/cm3 ) for 90 min at ordinary temperature and humidity, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa and spores of Bacillus subtilis var niger artificially contaminating the indoor air decreased by 91270%, 90890%, 89980% and 87837% respectively When the functional water contained 06% hydrogen peroxide, operation of the generator for 90 min caused decrease in above bacteria by 99994%, 99996%, 99996% and 94232% respectively In a room with normal activity of people, operation of the generator for 90 min as above could cause decrease in natural bacteria in air by 85%～94% In the range of various conditions tested, the disinfection efficacy increased with increasing concentration of hydrogen peroxide in functional water and increasing room temperature The disinfection efficacy was good at relative humidity of 40%～60% After operation of the generator for 60 min, the concentration of oxides of nitrogen in air of a room (73 m3) was 0033 mg/m3and ozone concentration was 0013 mg/m3 Rabbit eye test indicated that 10% hydrogen peroxide solution was non-irritative