公共场所空气消毒研究

Study on air disinfection in public places

目的 探索公共场所空气有效的消毒方法和理想的空气消毒剂。方法 用二氯异氰尿酸钠 (优氯净 )、过氧乙酸和甲醛进行实验室抑菌试验和 8家公共场所的现场空气消毒试验。结果 2 %甲醛对金黄色葡萄球菌和伤寒杆菌的抑菌浓度最低 (0 0 313% ) ;现场空气消毒试验表明 :优氯净 (含有效氯 10 % ,10 0ml/m3 呼吸带高度喷雾 )、过氧乙酸 (5 % ,0 5ml/m3 地面喷洒 )和甲醛 (0 2 % ,0 5ml/m3 ,1 0ml/m3 地面喷洒 )杀菌率分别为 6 3 18%、47 98%、34 0 1%和 6 9 85 %。结论 在公共场所进行空气消毒 ,用 10 0ml/m3 优氯净 (含有效氯 10 % )实施呼吸带高度喷雾消毒 ,能达到良好的消毒效果 。

Objective To explore the effective and economic method and ideal disinfectant for air disinfection in public places. Methods The bacteriostatic effects and air disinfection effects of sodium dichloroisocyanurate, peroxyacetic acid and formaldehyde were tested in the laboratory and in eight public places. Results The lowest bacteriostatic concentrations of formaldehyde for both the S.aureus and the B.typhi were 0.0313%. The on-site air disinfection experiments showed a bactericidal efficiency of 63.18% by spraying of sodium dichloroisocyanurate with concentration of 10% available chloride at a dose of 100ml/m 3 at the height of breathing zone. 47.98% for ground-neutralizing disinfection was achieved by applying peroxyacetic acid with concentrations of 5% at dose of 0.5ml/m 3. 34.01% and 69.85% for ground-neutralizing disinfection were also obtained by using formaldehyde with concentrations of 0.2% at doses of 0.5ml/m 3 and 1.0ml/m 3 respectively. Conclusion The spraying disinfection by sodium dichloroisocyanurate was regarded as the most economic and effective method for air disinfection in public places with concentration of 10% available chloride at dose of 100ml/m 3 at the height of breathing zone.