Objective To obtain the status of the Shanghai-Kowloon Through Train interior air quality,analyse the influence of different seasons and running time on in-car air environment,provide reference for better train hygiene supervision.
Methods Nine items,including microclimate (temperature,humidity,wind speed),air qualitycarbon dioxide (CO2),carbon monoxide (CO),inhalable particulate matter (PM10),formaldehyde,total bacteria countand noise of the Shanghai-Kowloon ThroughTrain were detected from April 2013 to April 2014.
Results The yields of qualified items were low,including winter CO and summer CO,inhalable particulate matter and formaldehyde (running and before stops).Specifically,the yields of qualified temperature were found to be the lowest.Statistical differences in selected items occurred among seasons and running time.
Conclusion The air quality of the Shanghai-Kowloon Through Train remains to be improved.Longer travel time and seasonal variations could influence the microclimate and air quality of the traingroup
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