某市地下轨道交通室内空气质量检测分析

Detection and analysis of indoor air quality of underground rail transit in a city

目的:了解某市地下轨道使用集中空调通风系统下室内空气的卫生状况,为地下轨道交通设施卫生管理提供依据。方法:按照原国家卫生部《公共场所集中空调通风系统卫生规范》(2012)的要求,2014-2017年对某市地下轨道交通5条线路的候车站台进行卫生监测。结果:细菌总数指标合格率为59.7%,真菌总数指标合格率为93.2%;可吸入颗粒物指标合格率为100%;新风量合格率为74.2%;风管内表面的积尘量、细菌总数和真菌总数全部合格。结论:某市地下轨道交通卫生管理仍需进一步加强。

Objective:To understand the hygienic condition of indoor air in a city's underground track using centralized air conditioning and ventilation system,and to provide basis for hygienic management of underground rail transit facilities.Methods:In accordance with the requirements of the Health Code for Centralized Air Conditioning and Ventilation Systems in Public Places(2012)issued by the Ministry of Health of China.From 2014 to 2017,hygienic monitoring was carried out on the waiting stations of 5 lines of underground rail transit in a city.Results:The qualified rate of total bacterial count index,total fungi count index,inhalable particulate matter index,fresh air volume index and total fungi number were 59.7%,93.2%,100%,74.2%and 74.2%respectively.Conclusion:The hygienic management of underground rail transit in a city still needs to be further strengthened.