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目的:调查分析北京市公共场所不同方式集中空调通风系统细菌总数及真菌总数污染状况,为集中空调的卫生管理提供技术支持和理论依据。方法:在2009年3月～5月间随机抽取北京市4星级以上宾馆的11套不同方式集中空调通风系统,进行细菌总数和真菌总数微生物污染检测与分析。结果:全空气空调系统中细菌总数合格率为88.5%,真菌总数合格率为90.4%;空气-水式空调系统中细菌总数合格率为85.9%,真菌总数合格率为72.9%。在全空气式空调系统和空气-水式空调系统之间,细菌总数有明显差异;真菌总数无明显差异。结论:北京市公共场所不同方式集中空调通风系统微生物污染状况不同,有其各自的污染特点;应采取针对性预防控制措施,科学有效的进行集中空调卫生管理。
OBJECTIVE: To investigate and analyze the total number of bacteria and the total number of fungi in different places in public places in Beijing, and to provide technical support and theoretical basis for the hygiene management of centralized air conditioners. Methods: From March to May in 2009, eleven different sets of central air conditioning and ventilation systems were randomly selected from 4-star hotels in Beijing to detect and analyze the total number of bacteria and the total number of fungi. Results: The total number of bacteria in the whole air conditioning system was 88.5% and the total number of fungi was 90.4%. The total number of bacteria in air-water system was 85.9% and the total number of fungi was 72.9%. There was a significant difference in the total number of bacteria between the full air-conditioning system and the air-water air conditioning system; there was no significant difference in the total number of fungi. Conclusion: There are different pollution status of air conditioning and ventilation system in different ways in public places in Beijing, and have their own pollution characteristics; targeted prevention and control measures should be taken to scientifically and effectively manage air conditioners in a centralized manner.