武汉市地铁环境中PM_(2.5)浓度水平分析  

Analysis of PM_(2.5)concentration levels in the Wuhan metro environment

作　　者：潘新赟 毛翔[1] 石斌[1] 刘华牛 王佩 刘俊玲[1] PAN Xinyun;MAO Xiang;SHI Bin;LIU Huaniu;WANG Pei;LIU Junling(stitute of Environmental Health,Wuhan Center for Disease Control and Prevention,Wuhan,Hubei 430024,China)

机构地区：[1]武汉市疾病预防控制中心环境健康与食品安全所,湖北武汉430024

出　　处：《医学动物防制》2023年第10期957-959,964,共4页Journal of Medical Pest Control

基　　金：湖北省卫生健康科研基金资助(WJ2019H407);湖北省卫生健康科研基金资助—预科院专项(WJ2019H303);武汉市卫生健康科研基金资助(WG19Q10)。

摘　　要：目的了解武汉市轨道交通地铁站细颗粒物(particulate matter 2.5,PM_(2.5))的浓度特征,为相关标准制定和环境改善提供科学依据。方法以武汉市地铁2号线26个地铁站为研究地点,于2019年5月对每个车站的车厢、车控室、屏蔽门内(隧道)、屏蔽门外、列车进站时及离开1min后站台、站厅、出口和新风井口的PM_(2.5)进行监测。结果隧道内(中位数67.4μg/m^(3))PM_(2.5)浓度是新风井口浓度(中位数45.3μg/m^(3))的1.5倍(U=550,P<0.01)。站台和站厅PM_(2.5)浓度差异无统计学意义(t=-1.558,P>0.05)。列车进站时站台PM_(2.5)浓度高于出站后浓度(t=2.187,P<0.05)。屏蔽门内(均值67.4μg/m^(3))PM_(2.5)浓度是屏蔽门外浓度(均值48.0μg/m^(3))的1.4倍(t=5.030,P<0.01)。站厅、站台和车控室PM_(2.5)浓度与新风井口PM_(2.5)浓度呈正相关(r=0.826、0.740、0.608,P<0.01);站厅PM_(2.5)浓度与站台PM_(2.5)浓度呈正相关(r=0.905,P<0.05)。结论隧道内PM_(2.5)污染最严重,可能会影响站台环境。建议地铁站点内安装屏蔽门,并加强对地铁站内空调通风系统的定期清洁和卫生管理。Objective To understand the concentration characteristics of fine particulate matter(PM_(2.5))in metro stations in Wuhan rail transit,and to provide a scientific basis for the establishment of standards and the improvement of environmental quality.MethodsTwenty-six metro stations of metroline 2 in Wuhan were chosen as the study site.The concentrations of PM_(2.5)in each station were monitored in the carriage,control room,inside the screen door(tunnel),outside the screen door,the platform(when the train entered the station and 1 min after it left),station hall,exit,ventilation shaft in May 2019.Results The concentration of PM_(2.5)in the tunnel(median 67.4μg/m^(3))was 1.5 times that of the ventilation shaft(median 45.3μg/m^(3))(U=550,P<0.01).There was no significant difference in the concentration of PM_(2.5)between the platform and station hall(t=-1.558,P>0.05).The PM_(2.5)concentration on the platform when the train entered the station was higher than the concentration after the train left the station(t=2.187,P<0.05).The concentration of PM_(2.5)inside the screen door(mean 67.4μg/m^(3))was 1.4 times higher than that outside the screen door(mean 48.0μg/m^(3))(t=5.030,P<0.05).The concentration of PM_(2.5)in the station hall,platform and control room was positively correlated with the concentration of PM_(2.5)in the ventilation shaft(r=0.826,0.740,0.608,P<0.01).The concentration of PM_(2.5)in the station hall was positively correlated with that in the platform(r=0.905,P<0.05).Conclusion The pollution of PM_(2.5)in the tunnel is the most serious,which might affect the platform environment.It is suggested that screen doors should be instlled in metro stations,and that the regular cleaning and sanitary management of air conditioning and ventilation systems in metro stations should be strengthened.

关 键 词：地铁 PM_(2.5) 空气质量 细颗粒物 隧道 分析 

分 类 号：R128[医药卫生—环境卫生学]