深圳地铁列车空气卫生质量的调查分析

目的调查分析深圳市地铁1、4号线列车空气卫生质量。方法随机抽取地铁1、4号线4列列车共8个车厢，检测新风量、温度、湿度、风速、照度、CO、CO2、甲醛、可吸入颗粒物、噪声、细菌总数等卫生指标。结果8个车辆按设计最大容纳人数折算，检测的新风量结果均未达到卫生标准要求。温度、湿度、风速、照度、CO、CO2、甲醛、可吸入颗粒物、噪声、细菌总数的合格率分别为100％、97．9％、52．1％、100％、100％、100％、100％、95．8％、100％、100％。结论车辆室内检测的化学与微生物污染物含量较低，但新风量不足难以稀释污染物，可能会导致污染物积累。

Ambient Air Quality of Subway Trains in Shenzhen

Objective To evaluate the ambient air quality of the subway No. 1 and 4 lines in Shenzhen city. Methods 8 carriages of 4 subway trains from No. 1 and 4 lines were selected by random sampling method,the following sanitary indices were tested such as fresh wind capacity, temperature, humidity, wind velocity, lighting, CO, CO2, formaldehyde, inhalable particulate matter, noise, and total bacterial count. Results Considering the maximum capacity of the 8 carriages, the testing results of the fresh wind capacity were not qualified according to the national sanitary standards. The qualification rates of temperature, humidity, wind velocity, lighting, CO, CO2, formaldehyde, inhalable particulate matter, noise, and total bacterial count were 100% ,97. 9% ,52. 1%, 100%, 100%, 100%, 100% ,95. 8%, 100% and 100% respectively. Conclusion The contents of the chemical and microbiological pollutants are low in the subway trains, however, the fresh wind capacity is unable to dilute the gaseous pollutants and may lead to the pollutants accumulation.