| Title: | [Analysis of Pollution Characteristics and Sources of Atmospheric VOCs in Ezhou City] |
| Author(s): | Fu YM; Yang HG; Lu MY; Zeng Y; Zou JX; |
| Address: | "College of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China" |
| DOI: | 10.13227/j.hjkx.201908112 |
| ISSN/ISBN: | 0250-3301 (Print) 0250-3301 (Linking) |
| Abstract: | "From March 2018 to February 2019, quantitative detection was made of 102 kinds of atmospheric volatile organic compounds (VOCs) using online gas chromatography in Ezhou City. We compared and analyzed the composition, seasonal variation, and diurnal variation of VOCs. Using maximum incremental reactivity (MIR), we estimated the ozone generation potential (OFP) of VOCs. The results show that the annual average volume fraction of atmospheric VOCs in Ezhou is (30.78+/-15.89)x10(-9), and is overall higher in winter than summer, represented by alkane > oxygen > halogenated hydrocarbon > olefin > aromatic hydrocarbon > alkyne. The night volume fraction is higher than in the daytime, and overall the distribution is 'double peak'. The aromatic hydrocarbons, halogenated hydrocarbons, and OVOCs appear as a 'third peak' at 00:00-02:00. Aromatic hydrocarbons and olefins contribute more to the OFP potential of VOCs, with contribution rates of 35.45% and 29.5%, respectively. The highest contribution rate to OFP is ethylene, reaching 24.217%. Analysis of VOC characteristic species found that vehicle exhaust fumes and solvent volatilization are the main sources of VOCs in Ezhou. Of these, motor vehicle emissions are the most important source. Controlling Ezhou's motor vehicle emissions helps to reduce the composition of atmospheric VOCs, thereby reducing ozone production" |
| Keywords: | characteristic pollutants ozone generation potential(OFP) source resolution vehicle emissions volatile organic compounds(VOCs); |
| Notes: | "PubMed-not-MEDLINEFu, Yu-Meng Yang, Hong-Gang Lu, Min-Yu Zeng, Yan Zou, Jia-Xin chi English Abstract China 2020/07/02 Huan Jing Ke Xue. 2020 Mar 8; 41(3):1085-1092. doi: 10.13227/j.hjkx.201908112" |
