文献类型：期刊文献

英文题名：Characterization of PM and microclimate in a Shanghai subway tunnel, China

作者：Qiao, Ting[1]; Xiu, Guangli[1]; Zheng, Yi[2]; Yang, Jun[3]; Wang, Lina[1]

机构：[1] State Environmental Protection Key Laboratory of Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, 200237, China; [2] Technical Center of Shanghai Shentong Metro Group Co., Ltd., Shanghai, 201103, China; [3] Shanghai An-He Environmental Testing Technique Co., Ltd., Shanghai, 201611, China

年份：2015

卷号：102

起止页码：1226

外文期刊名：Procedia Engineering

收录：EI(收录号：20155101705391)

语种：英文

外文关键词：Subways - Railroad tunnels - Particles (particulate matter)

摘要：A real-time monitoring campaign was conducted from November 11th to November 15th, 2013 in a Shanghai subway tunnel, consisting of temperature (T), relative humidity (RH) and PM1, PM2.5 and PM10. The objective was to characterize PM and microclimate in the subway tunnel. Results indicated that median values of T, RH, PM1, PM2.5 and PM10 were 29.4°C, 29.6%, 42 μg/m3, 46 μg/m3 and 58 μg/m3, respectively. Air quality in the tunnel was comparatively good, with 76% of PM2.5 and 91% of PM10 reaching relative standards. Independent samples t-test verified that PM1, PM2.5 and PM10 presented significant statistical differences between peak hours and off-peak hours (p Thursday > Monday, Tuesday > Wednesday. Ratios of PM1/PM10 and PM2.5/PM10 were 0.49-1.00 and 0.56-1.00, respectively, which were high in outage and low in operation of trains. This phenomenon might result from plenty of coarse particles generated by mechanical grinding in the process of train driving. ? 2015 The Authors.