2017—2018年武汉市地铁系统室内空气质量分析

Analysis on Indoor Air Quality of Wuhan Metro System,2017—2018

目的调查武汉市4条地铁沿线站台和站厅的室内空气卫生状况,为地铁开通运营提供卫生依据。方法于2017—2018年对武汉市地铁11号线、7号线、纸坊线、2号线南延线的站台层、站厅层空气中的温度、相对湿度、风速、二氧化碳、一氧化碳、甲醛、照度、噪声、细菌总数及放射性氡浓度依据国家标准的要求进行检测和评价。结果各站台、站厅所检测的指标均符合国家标准要求。各站台层的甲醛(0.030 mg/m^(3))、照度(460.594 Lx)、氡浓度(24.650 Bq/m^(3)),均低于站厅,且差异均有统计学意义(P<0.01);细菌总数、甲醛、温度、风速、一氧化碳、二氧化碳及氡浓度差异均有统计学意义(P<0.01);噪声、照度差异均无统计学意义(P>0.05)。结论不同地铁线路的站台和站厅部分指标存在差异但整体的空气质量状况良好。

Objective To investigate the environmental sanitation condition of the platform and station hall of four subway lines in Wuhan City,and to provide sanitary basis for the operation of subway.Methods According to the requirements of national standards.The temperature,relative humidity,wind speed,carbon dioxide,carbon monoxide,formaldehyde,illuminance,noise,total number of bacteria and concentration of radioactive radon in the air of platform floor and hall floor of Wuhan metro line 11,line 7,Zhifang line and south extension line 2 were detected and evaluated of 2017—2018.Results The indexes detected on platform floor and station hall floor all conform to the requirements of national standards.The formaldehyde in the platform floor of various railway stations was 0.030 mg/m^(3),the illumination was 460.594 Lx,and the radon was 24.650 bq/m^(3),all of there were lower than the station hall floor,and the difference was statistically significant(P<0.01).The total number of bacteria,formaldehyde,temperature,wind speed,carbon monoxide,carbon dioxide and radon of the four routes were statistically significant(P<0.01).There were no statistically significant difference in noise and illumination(P>0.05).Conclusion There were some differences between the platform floor and the hall floor.Some indexes of different subway lines were different.Wuhan metro line 11,line 7,line paper square,line 2 south extension line overall air quality condition were good.