| Title: | [Characteristics and Source Apportionment of Volatile Organic Compounds (VOCs) in a Typical Industrial Area in Dongguan During Periods of Ozone and Non-ozone Pollution in Summer] |
| Author(s): | Zhou Z; Xiao LH; Fei LL; Yu W; Lin M; Huang JJ; Zhang ZS; Tao J; |
| Address: | "Dongguan Ecology and Environment Monitoring Station of Guangdong Province, Dongguan 523009, China. Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China. South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China" |
| DOI: | 10.13227/j.hjkx.202111285 |
| ISSN/ISBN: | 0250-3301 (Print) 0250-3301 (Linking) |
| Abstract: | "To investigate the characteristics and sources of atmospheric volatile organic compounds (VOCs) in a typical industrial zone in Dongguan, 56 VOCs species were continuously measured in Houjie Town of Dongguan in summer of 2020. In addition, mass concentrations of O(3), NO(x), and CO and meteorological data were synchronously collected. Then, characteristics of total VOCs and major species, the contributions of major VOCs species to ozone formation potential (OFP), and source apportionment of VOCs under the different ozone concentrations were discussed. The mean mixing ratio of VOCs was 53.1x10(-9) including aromatics (24.7x10(-9)), alkanes (23.7x10(-9)), alkenes (3.9x10(-9)), and alkynes (0.7x10(-9)). The mean mixing ratios of aromatics, alkanes, alkenes, and alkynes increased approximately 10%, 43%, 38%, and 98% during the period of ozone pollution, respectively, compared with those during the period of non-ozone pollution. Aromatics contributed the most to OFP during the periods of both ozone pollution and non-ozone pollution, followed by alkanes, alkenes, and alkynes. Solvent sources, liquefied petroleum gas (LPG) leakage, fossil fuel combustion, and hydrocarbon volatilization were resolved using the PMF model, which accounted for 60%+/-20%, 16%+/-11%, 15%+/-11%, and 9%+/-6% of total VOCs, respectively. During the period of ozone pollution, the contribution of solvent sources to the total VOCs decreased to 44%, whereas that of LPG leakage and hydrocarbon volatilization increased to 21% and 16%, respectively" |
| Keywords: | *Air Pollutants/analysis Alkanes/analysis Alkenes/analysis Alkynes Environmental Monitoring Hydrocarbons *Ozone/analysis Solvents *Volatile Organic Compounds/analysis alkane aromatics online measurement ozone formation potential (OFP) solvent source; |
| Notes: | "MedlineZhou, Zhen Xiao, Lin-Hai Fei, Lei-Lei Yu, Wei Lin, Man Huang, Jun-Jun Zhang, Zhi-Sheng Tao, Jun chi China 2022/09/13 Huan Jing Ke Xue. 2022 Sep 8; 43(9):4497-4505. doi: 10.13227/j.hjkx.202111285" |
