广州市公共场所集中空调通风系统微生物卫生状况分析

Microbiological hygiene status of centralized air ventilation system of public places in Guangzhou

目的：调查分析广州市公共场所集中空调通风系统微生物卫生状况,为卫生管理提供依据,预防和控制由空调细菌污染所带来的呼吸道传染病的传播和流行。方法：按照《公共场所集中空调通风系统卫生规范》要求,对5家公共场所集中空调运行期间,采集集中空调送风口空气样品,检测空气中的细菌总数、真菌总数、β-溶血性链球菌。结果：除β-溶血性链球菌外,广州市公共场所集中空调通风系统送风口有细菌总数、真菌总数不同程度的污染。其中细菌总数合格率为71.4%,细菌总数检出范围为27-930 cfu/m^3,最高超标近1倍;真菌总数合格率为85.7%,真菌总数检出范围为7-6000 cfu/m^3,最高超标11倍。结论：公共场所集中空调通风系统应加强微生物卫生管理。

Objective：To investigate sanitary condition of the centralized air ventilation system in public place in Guangzhou to provide the basis for sanitary control. Methods： Air sample was collected in air supplied outlet when centralized air ventilation system was working. The total content of the bacterium and fungus in the air was tested. Results： The centralized air ventilation system was working seriously polluted in which the qualified rate the total content of bacterium was 71.4%. The qualified rate of the total content of fungus was 85.7%. Conclusion： Sanitary control should be strengthened to the centralized air ventilation system.