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- W4328110107 abstract "Comprehensive observations of ambient volatile organic compounds (VOCs) were conducted in Beijing (the capital of China) in the summer of 2018 with high temporal resolution, and the compositions, sources, ozone formation potential (OFP), and secondary organic aerosol formation potential (SOAP) were examined. A high mixing ratio of total VOCs (TVOCs) (26.6 ± 9.5 ppbv) was observed in this study, which was similar to that obtained in 2014 and 2016 in Beijing. The dominant components were alkanes (51.1% of TVOCs), alkenes (24.1%), and aromatics (19.5%). According to backward trajectories and potential source contribution function analysis, medium-distance transport from the south of the sampling region contributed more than 50% of the trajectories, and the potential source regions were mainly located in Shandong and Hebei Provinces. The seven sources identified by the positive matrix factorization receptor model included natural/liquified petroleum gas (NG/LPG) usage and gasoline evaporation (21.68%), solvent usage (20.14%), combustion sources (16.07%), industrial emissions (15.24%), diesel exhaust (14.89%), gasoline exhaust (6.05%), and biological emissions (5.92%). Alkenes (50.05%) and aromatics (36.20%) contributed the most to the total OFP, whereas aromatics contributed more than 90.00% to the total SOAP. The source with the greatest contribution to OFP and SOAP was solvent usage, the contribution of which exceeded 50%. The results of this study are favorable for the development of control strategies for VOCs and for reducing the formation of photochemical smog and secondary particulate matter." @default.
- W4328110107 created "2023-03-22" @default.
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- W4328110107 date "2023-05-01" @default.
- W4328110107 modified "2023-10-02" @default.
- W4328110107 title "Characteristics of summertime ambient volatile organic compounds in Beijing: Composition, source apportionment, and chemical reactivity" @default.
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- W4328110107 doi "https://doi.org/10.1016/j.apr.2023.101725" @default.
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