| Title: | "[Characteristics and Source of VOCs During O(3) Pollution Between August to September, Langfang Development Zones]" |
| Author(s): | Zhang JQ; Wang HL; Fang XY; Liu RZ; Ding WW; Ling DY; Wang SL; |
| Address: | "State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China. Ao Lai Guo Xin(Beijing) Testing & Detection Technology Co., Ltd., Beijing 101399, China. Langfang Development Zones Environmental Protection Agency, Langfang 065001, China" |
| DOI: | 10.13227/j.hjkx.202103142 |
| ISSN/ISBN: | 0250-3301 (Print) 0250-3301 (Linking) |
| Abstract: | "A total of 99 volatile organic compound(VOC) species were detected the Langfang development zones based on continuous monitoring using a ZF-PKU-1007 between August 25 and September 30, 2018. The concentrations, reactivity, and sources of VOCs were studied under different O(3) concentrations using compositional analysis. The results showed that the average VOCs concentration during the research period was(75.17+/-38.67)x10(-9), and was(112.33+/-30.96)x10(-9), (66.25+/-34.84)x10(-9) on pollution days and cleaning days, respectively(VOCs concentrations were 69.6% higher on pollution days). The contribution of VOCs species to the ozone formation potential(OFP) were ranked in the order aldehydes > aromatics > alkenes > alkanes. In the case of L(.OH), the main contributions were from aromatics(30.0%) and alkenes(25.8%) on pollution days, while the contribution from aromatic alkenes(29.8%) was a slightly higher than aromatics(28.0%) on cleaning days. By applying the positive matrix factorization(PMF) model, five major VOCs sources were extracted, namely vehicle emissions(34.4%), solvent usage and evaporation(31.7%), the petrochemical industry(15.7%), combustion(11.1%), and plant emissions(7.9%). The contributions of solvent usage and evaporation and plant emission sources on pollution days were 13.1% and 1.2% higher than on cleaning days, respectively, which was likely due to relatively higher temperatures on these days. Therefore, vehicle emissions and solvent usage and evaporation should be priorities in VOCs control strategies for the Langfang development zones between August to September" |
| Keywords: | *Air Pollutants/analysis China Environmental Monitoring *Ozone/analysis Vehicle Emissions/analysis *Volatile Organic Compounds/analysis characteristics ozone(O3) pollution source apportionment volatile organic compounds(VOCs); |
| Notes: | "MedlineZhang, Jing-Qiao Wang, Hong-Liang Fang, Xiao-Yun Liu, Rui-Ze Ding, Wen-Wen Ling, De-Yin Wang, Shu-Lan chi China 2021/09/29 Huan Jing Ke Xue. 2021 Oct 8; 42(10):4632-4640. doi: 10.13227/j.hjkx.202103142" |
