| Title: | [Evolution and Characteristics of Full-process Vehicular VOCs Emissions in Tianjin from 2000 to 2020] |
| Author(s): | Sun LN; Zhong CZ; Sun SD; Liu Y; Tong H; Wu YJ; Song PF; Zhang LN; Huang X; Wu L; Mao HJ; |
| Address: | "Tianjin Key Laboratory of Urban Transport Emission Research, State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China. China Automotive Technology and Research Center Co., Ltd., Tianjin 300300, China. Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing 100084, China. Tianjin Air Pollution Control Laboratory, Tianjin Academy of Eco-Environmental Sciences, Tianjin 300191, China. School of Geography, Nanjing Normal University, Nanjing 210023, China" |
| DOI: | 10.13227/j.hjkx.202205135 |
| ISSN/ISBN: | 0250-3301 (Print) 0250-3301 (Linking) |
| Abstract: | "Vehicle emissions are an important source of anthropogenic volatile organic compound (VOCs) emissions in urban areas and are commonly quantified using vehicle emission inventories. However, most previous studies on vehicle emission inventories have incomplete emission factors and emission processes or insufficient consideration of meteorological parameters. Based on the localized full-process emission factors attained from tested data and previous studies, a method to develop a monthly vehicular VOC emission inventory of full process for the long-term was established, which covered exhaust and evaporative emissions (including running loss, diurnal breathing loss, hot soak loss, and refueling emission). Then, the method was used to develop a full-process vehicular VOC emission inventory in Tianjin from 2000 to 2020. The results showed that the total vehicular VOC emissions in Tianjin rose slowly and then gradually decreased. In 2020, the total emissions were 21400 tons. The light-duty passenger vehicles were the dominant contributors and covered 75.00% of the total emissions. Unlike the continuous decline in exhaust emissions, evaporative emissions showed an inverted U-shaped trend with an increasing contribution to total emissions yearly, accounting for 31.69% in 2020. Monthly emissions were affected by both vehicle activity and emission factors. VOC emissions were high in autumn and winter and low in spring and summer. During the COVID-19 epidemic in 2020, vehicle activity was limited by closure and control, making VOC emissions significantly lower than those during the same period in previous years. The method and data in this study can provide technical reference and a decision-making basis for air pollution prevention and control" |
| Keywords: | emission factors emission inventory evaporative emission running loss vehicle volatile organic compounds (VOCs); |
| Notes: | "PubMed-not-MEDLINESun, Lu-Na Zhong, Chong-Zhi Sun, Shi-da Liu, Yan Tong, Hui Wu, Ya-Jun Song, Peng-Fei Zhang, Li-Na Huang, Xu Wu, Lin Mao, Hong-Jun chi English Abstract China 2023/03/16 Huan Jing Ke Xue. 2023 Mar 8; 44(3):1346-1356. doi: 10.13227/j.hjkx.202205135" |
