Study on the traffic air pollution inside and outside a road tunnel in Shanghai, China.
Study on the traffic air pollution inside and outside a road tunnel in Shanghai, China.
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上海某公路隧道内外交通空气污染研究
DOI：
10.1371/journal.pone.0112195
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发表时间：
2014
期刊：
影响因子：
3.7
通讯作者：
Zhou B
中科院分区：
文献类型：
--
作者：
Zhou R;Wang S;Shi C;Wang W;Zhao H;Liu R;Chen L;Zhou B
为了解隧道内外机动车引起的空气污染状况，于2013年4月24日13：00 ~ 4月25日13：00对上海市湘阴隧道内外的污染物浓度及其日变化进行了现场测量。隧道内污染物的最高小时平均浓度为CO、NO、NO2和NOX，分别为13.223 mg/m3、1.829 mg/m3、0.291 mg/m3和3.029 mg/m3，最低小时平均浓度为3.086 mg/m3、0.344 mg/m3、0.080 mg/m3和0.619 mg/m3。污染物浓度白天较高，夜间较低，这与隧道内的交通状况有关。隧道内污染物浓度远高于隧道外。那么在慢风的情况下，风的影响远小于污染源的影响。此外，PM2.5浓度在早高峰时段急剧攀升至峰值（468.45微克/立方米）。隧道内PM2.5中有机碳（OC）和元素碳（EC）的浓度分别为37.09-99.06 µg/m3和22.69-137.99 µg/m3。此外，OC/EC比值范围为0.72 - 2.19，平均值为1.34。通过与广州、深圳等地的隧道试验结果对比，可以推断，湘阴隧道HDV的比例相对较低。
To investigate the vehicle induced air pollution situations both inside and outside the tunnel, the field measurement of the pollutants concentrations and its diurnal variations was performed inside and outside the Xiangyin tunnel in Shanghai from 13:00 on April 24th to 13:00 on April 25th, 2013. The highest hourly average concentrations of pollutants were quantified that CO, NO, NO2 and NOX inside the tunnel were 13.223 mg/m3, 1.829 mg/m3, 0.291 mg/m3 and 3.029 mg/m3, respectively, while the lowest ones were 3.086 mg/m3, 0.344 mg/m3, 0.080 mg/m3 and 0.619 mg/m3. Moreover, the concentrations of pollutants were higher during the daytime, and lower at night, which is relevant to the traffic conditions inside the tunnel. Pollutants concentrations inside the tunnel were much higher than those outside the tunnel. Then in a case of slow wind, the effect of wind is much smaller than the impact of pollution sources. Additionally, the PM2.5 concentrations climbed to the peak sharply (468.45 µg/m3) during the morning rush hours. The concentrations of organic carbon (OC) and elemental carbon (EC) in PM2.5 inside the tunnel were 37.09–99.06 µg/m3 and 22.69–137.99 µg/m3, respectively. Besides, the OC/EC ratio ranged from 0.72 to 2.19 with an average value of 1.34. Compared with the results of other tunnel experiments in Guangzhou and Shenzhen, China, it could be inferred that the proportion of HDVs through the Xiangyin tunnel is relatively lower.
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