北京_上海_广州三地地铁系统PM2_5测试分析_程刚.pdfVIP

网络出版时间：2014-11-05 10:17   网络出版地址：/kcms/doi/10.3969/j.issn.2095-4468.2014.05.002.html doi：10.3969/j.issn.2095-4468.2014.05.002 北京、上海、广州三地地铁系统 PM2.5 测试分析  ** 程刚 ，臧建彬 （同济大学机械与能源工程学院，上海 200020 ） [摘 要] 本文测试了北京上海广州地铁系统 PM2.5 浓度，测试区域分为站外、大厅、站台和车内。测试 仪器采用手持式粉尘测量仪，仪器原理为 β射线吸收法。测试结果表明：总体趋势来看地铁系统 PM2.5 浓 度分布呈现出来的规律如下：PM2.5(站外) ＞PM2.5(大厅) ＞PM2.5(站台) ＞PM2.5(车内) ，但当站外 PM2.5 浓度极低时，地铁系统 PM2.5 浓度呈现的规律正好相反。测试结果显示地铁车内与站外 PM2.5 浓度存在回 归直线关系；降雨及台风气候会降低车内 PM2.5 浓度；地铁载客量对车内 PM2.5 浓度无影响。 [关键词] 地铁系统；PM2.5 ；回归直线关系；载客量 Test and Analysis of PM2.5 Concentration of Metro System in Beijing, Shanghai and Guangzhou * ** CHENG Gang , ZANG Jian-bin (School of Mechanical Engineering, Tongji University, Shanghai 200020, China) [Abstract] A test of PM2.5 concentration in Beijing, Shanghai and Guangzhou metro system is performed, and the test area is divided into inbound, hall, platform, and carriage. The handheld dust measuring instrument is employed, of which principle is beta ray absorption theory. The test results show that seen from the overall trend the distribution principle of PM2.5 concentration of metro system is as follows: PM2.5 concentration in inbound PM2.5 concentration in hall PM2.5 concentration in the platform PM2.5 concentration in the carriage, but when PM2.5 concentrations in inbound is very low, the distribution principle of PM2.5 concentrations of metro system is just the opposite. The test results show that PM2.5 concentration in metro