4种车型列车车厢内冬季空气质量评价

[目的]了解冬季旅客列车车厢内的空气质量. [方法]监测4种25型旅客列车的车厢空气中温度、湿度、风速等微小气候指标及CO、CO2、可吸入颗粒物(PM)、空气细菌总数,甲醛等污染指标,并将测得数据进行分析.[结果]25B型车厢与25T型车厢相比CO、CO2、PM浓度差异均有统计学意义(P＜0.05);25B、25G、25K型车厢与25T型车厢相比空气细菌总数差异有统计学意义(P＜0.05);25T型车厢与25K型车厢相比甲醛浓度有显著性差异(P＜0.05);硬座与硬卧、软卧车厢相比CO2、空气细菌总数差异均有统计学意义(P＜0.05);软卧车厢与硬座、硬卧车厢相比甲醛差异有统计学意义(P＜0.05). [结论]CO、CO2和PM是25B型车的主要污染物;空气细菌是25B、25G、25K型列车的主要污染物;甲醛是25T型列车和软卧车厢的主要污染物;CO2、空气细菌是硬座车厢的主要污染物.

Air Quality Assessment of Four Models of Compartments in Winter

[Objective]To study the air quality in air-conditioned carriage in winter.[Methods]10 indicators such as microclimate,CO content,CO_2 content etc.in the air of all the 4 models of carriage were detected every four hours during entire journey,than analyzed with SPSS software.[Results]The air CO content,CO_2 content and inhalable particulate of model 25B were significantly different from the 25T.The total number of bacteria the models 25B,25G,and 25K were significantly different from the same values in model ...