地铁空调卫生学状况对站台可吸入颗粒物浓度影响

Impact of Hygienic Status of Air Conditioner in Subway to Concentration of Inhalable Particies in the air in Platform

目的了解地铁空调系统的卫生学状态以及空调系统卫生学对站内空气质量的影响。方法按照《公共场所卫生标准检验方法》GB18204-2000,《公共场所卫生监测技术规范》GBPT17220-1998和《公共场所集中空调通风系统卫生规范》分别对地铁集中空调通风系统卫生状况及站台可吸入颗粒物浓度进行检测。结果各站点的集中空调通风系统的积尘量、管道壁的细菌总数和真菌总数不都相同,其中站点4污染水平相对较高。空调系统积尘量和室内空气中可吸入颗粒物间存在相关关系。结论减少空调系统通风管道中的积尘量有助于降低室内空气中可吸入颗粒物浓度,应加强对其运行中的卫生监管。

Objective To understand the hygienic status of the subway air condition ventilation system,and the impact of hygiene status of air-condition ventilation system to the air quality of the subway platform.Methods According to the testing methods of national standards,the hygiene status of the sub-way was evaluated and the inhalable particies in the air of platform was tested respectively.Results The amount of dust in air conditioning ventilation sys-tem,the total bacteria and fungi count was different among the four subway stations,and the site 4 is highly polluted.The amount of dust in air-condi-tioning systems was correlated to the concentration of inhalable particies in subway platform.Conclusion Reducing the amount of dust in the air-condi-tioning ventilation system can reduce the concentration of inhalable particies in subway platform.We should strengthen supervision to hygiene status of the air-condition ventilation system.