【摘要】 目的某地铁站多名车务人员患咽喉炎及鼻炎,为了解环境影响因素,对地铁站空气质量进行卫生学调查。方法于2006年2月15日对地铁公共区(站厅、站台)、设备区、隧道口以及地铁的地面出口处和室外新风取风点空气中的总挥发性有机物(TVOC)、PM10、CO、苯、CO2、甲醛、细菌总数进行监测,下午和晚上各采样1次。结果晚上站内各采样点空气污染物的超标率远高于下午,超标项目主要是PM10、苯、CO,晚上站内和室外空气中各种污染物的浓度高于下午,除空气细菌总数外,差异均具有统计学意义(P<0.05);该地铁站室外空气中PM10的浓度和细菌总数高于站内和隧道,差异有统计学意义(P<0.001),其余空气污染物浓度在站内、隧道和室外的分布差异无统计学意义(P>0.05)。结论该地铁站晚上站内空气污染严重,主要以化学性污染物为主且主要来源于室外影响。更多还原

【Abstract】 Objective To investigate the sanitary condition in the inside and outside of a metro station in Guangzhou, and to find the environmental risk factors which can affect the health of staffs of the metro station. Methods To monitor the level of TVOC, inhalable particles, carbon monoxide, benzene, carbon dioxide, formaldehyde and total bacterial count in the air of public places metro hall, metro platform,facilities rooms, tunnel gates, new flow entrances and entrances of subway station respectively in the afternoon and evening, Feb 15, 2006. Results The rate of exceeding standard limit of the pollutants in metro station in the evening was higher than that in the afternoon, and the main items exceeded the limit were inhalable particles, benzene and carbon monoxide, especially in the evening. The level of inhalable particles in the metro hall and facilities rooms both exceeded standard limit. The level of every pollutant in the inside and outside of the station in the evening was higher than that in the afternoon P<0.05 except the level of total bacterial count. Conclusion Air pollution in the metro station in the evening is serious, the main pollutants are chemical substances, and the source of various pollutant is from outside. The health of staffs in the station will be impacted by the smog from the open barbecue around the metro station.更多还原