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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/m3,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/m3,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 and analyze the status of microbial health in central air-conditioning and ventilation systems in public places in Guangzhou, and to provide the basis for health management to prevent and control the spread and prevalence of respiratory diseases caused by air-conditioning bacteria. Methods: According to the requirements of Hygienic Standard for Central Air Conditioning and Ventilation System in Public Places, air samples of centralized air-conditioner air outlet were collected during the operation of central air-conditioning in 5 public places to detect the total number of bacteria in the air, the total number of fungi and β-hemolytic streptococcus. Results: In addition to β-hemolytic streptococcus, the public places in Guangzhou air-conditioning ventilation system air outlet with the total number of bacteria, the total number of fungal contamination of varying degrees. The qualified rate of total bacteria was 71.4%, the total number of bacteria was 27 ~ 930 cfu / m3, the highest exceeded the standard by nearly 1 times; the total number of fungi was 85.7%, the total number of fungi was 7 ~ 6000 cfu / m3, the highest Exceeded 11 times. Conclusion: The centralized air conditioning and ventilation system in public places should strengthen the management of microbial health.