郑州市地铁一号线空气质量状况调查分析

目的了解郑州市地铁一号线运营前的空气质量现状,为地铁运营提供卫生管理依据和建议。方法根据国家有关法规、卫生标准,采用国家标准规定的检验检测方法,随机抽取郑州市地铁一号线5个站点的公共场所卫生进行现场与实验检测分析,评价其是否符合国家卫生标准。结果站厅、站台和车厢的部分监测点温度、可吸入颗粒物、空气细菌总数、噪声不合格:(1)站厅、站厅和车厢的少数监测点温度低于标准;(2)可吸入颗粒物超标情况比较严重,超标率车厢大于站厅(93.33%)、站台(93.33%);(3)空气细菌总数超标率站台(26.67%)大于站厅(23.33%)、车厢(8.33%);(4)噪声超标率车厢(50.00%)大于站厅(23.33%)、站台(23.33%);其他检测分析项目均符合国家卫生标准。站台、站台各项指标差异无统计学意义(P>0.05)结论郑州市地铁一号线运营前公共场所存在一些卫生问题,有待改进。部分站点外围施工尚未完成,是导致可吸入颗粒物及微生物超标的重要原因。外围污染主要通过中央空调进入室内,加强地铁站空调系统卫生管理对于确保室内空气质量有积极意义。

Investigation and Analysis on Circumstances of Air Quality in Zhengzhou Metro Line 1Station

Objectives To investagate the air quality in Zhengzhou Metro Line 1 Station and provide the basis and rec- ommendations for the subway operators. Methods According to the relevant state laws and regulations, health stan- dards, adopting standard detection method to detect the air quality of five stations sampled randomly ,and then evaluat- ing the air up to standard whether or not. Results The temperature, inhalable particles, total bacterial count, noise of some observation points in station hall, platform and carriages were blowing standard： （ 1 ） The temperature of a few ob- servation points were short of standard. （2）Inhalable particles were severly excessive, and the exceeding rate in carriage was significant higer than in station ha11（93.33 % ）and platform（93.33 % ）. （3） The air total number of bacteria in sta- tion hall （26.67 % ）was significant higer than platform（ 23.33 % ）and carriage （ 8.33 % ）. （4）The exceeding rate of noise in carriage was significant higher than station hal1（23.33 % ）and platform（23.33 % ）. Conclusions There are some hy- gience problems in public places of Metro Line 1 Station,which is to be improved. The construction in progress around stations is a significant factor which result in exceeding standard of Inhalable particles and microorganism.Therefore, it is significant to enhance the air conditioning system hygience management to improve the air quality of subway station.