Method to establish the emission inventory for urban tunnel source
HUANG Qing1,2, SONG Tao1,2, WANG Bo-guang3, XU Yan-ling4, LI Yue5, ZHANG Zhan-yi3
1. School of Environment, Jinan University, Guangzhou 510632, China;
2. Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou 510632, China;
3. Institute for Environment and Climate Research, Jinan University, Guangzhou 510632, China;
4. Chinese Academy for Environmental Planning, Beijing 100012, China;
5. Transport Planning and Research Institute, Ministry of Transport, Beijing 100028, China
In the present study, we brought forward the concept of urban tunnel source. The urban tunnel source is similar to an underground horizontal chimney. It features with a low emission height and a high emission concentration. We developed two methods to establish the emission inventory for urban tunnel source, including the emission factor method and the on-line monitoring method. The study on the Guangzhou Zhujiang Tunnel showed that the annual total emission and the annual incremental emission of NOx were 18.8t and 16.6t, respectively; the annual total emission and the annual incremental emission of CO were 22.7t and 16.8t, respectively; the annual total emission and the annual incremental emission of SO2 were 0.39t and 0.22t, respectively. Therefore, the influence of urban tunnel source on the local and small-scale atmospheric environment should not be ignored.
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