| Title: | "Source apportionments of atmospheric volatile organic compounds in Nanjing, China during high ozone pollution season" |
| Author(s): | Fan MY; Zhang YL; Lin YC; Li L; Xie F; Hu J; Mozaffar A; Cao F; |
| Address: | "Yale-NUIST Center on Atmospheric Environment, International Joint Laboratory on Climate and Environment Change, Nanjing University of Information Science and Technology, Nanjing, 210044, China; Key Laboratory Meteorological Disaster; Ministry of Education & Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disaster, Nanjing University of Information Science and Technology, Nanjing, 210044, China; Jiangsu Provincial Key Laboratory of Agricultural Meteorology, College of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing, 210044, China. Yale-NUIST Center on Atmospheric Environment, International Joint Laboratory on Climate and Environment Change, Nanjing University of Information Science and Technology, Nanjing, 210044, China; Key Laboratory Meteorological Disaster; Ministry of Education & Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disaster, Nanjing University of Information Science and Technology, Nanjing, 210044, China; Jiangsu Provincial Key Laboratory of Agricultural Meteorology, College of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing, 210044, China. Electronic address: zhangyanlin@nuist.edu.cn. Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing University of Information Science & Technology, Nanjing, 210044, China" |
| DOI: | 10.1016/j.chemosphere.2020.128025 |
| ISSN/ISBN: | 1879-1298 (Electronic) 0045-6535 (Linking) |
| Abstract: | "Atmospheric volatile organic compounds (VOCs) are not only harmful to human health, but also lead to ozone (O(3)) formation. From July 3 to August 1 of 2018, online measurements of atmospheric VOCs were conducted in Nanjing City, in order to investigate the source apportionments to VOCs since the Empirical Kinetic Modelling Approach (EKMA) suggested that O(3) formation was VOC-limited at the receptor site. Using positive matrix factorization (PMF) model, we quantified eight sources of VOCs, including vehicle exhausts (23%), industrial source (18%), fuel evaporation (17%), petrochemical industry (12%), solvent usage (12%), biogenic emission (8%) and liquefied petroleum gas (7%) along with gasoline additive (3%). The diurnal distributions showed that the contributions of traffic-related sources maximized during the traffic rush hours. In contrast, biogenic sources had the highest contribution at noontime. Backward trajectory results showed that local traffic emissions were the main sources of VOC in Nanjing. Our results revealed that strict control of VOC emissions from local vehicle exhaust might be an important way to decrease high VOC pollution in Nanjing" |
| Keywords: | *Air Pollutants/analysis China Cities Environmental Monitoring Humans *Ozone/analysis Seasons Vehicle Emissions/analysis *Volatile Organic Compounds/analysis Ekma Emission ratios Source appointment Volatile organic compounds; |
| Notes: | "MedlineFan, Mei-Yi Zhang, Yan-Lin Lin, Yu-Chi Li, Lin Xie, Feng Hu, Jianlin Mozaffar, Ahsan Cao, Fang eng England 2020/12/11 Chemosphere. 2021 Jan; 263:128025. doi: 10.1016/j.chemosphere.2020.128025. Epub 2020 Aug 22" |
