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Environ Sci Technol


Title:Spatial Distribution of Secondary Organic Aerosol Formation Potential in China Derived from Speciated Anthropogenic Volatile Organic Compound Emissions
Author(s):Wu R; Xie S;
Address:"College of Environmental Sciences and Engineering, State Key Joint Laboratory of Environmental Simulation and Pollution Control , Peking University , Beijing , 100871 , China"
Journal Title:Environ Sci Technol
Year:2018
Volume:20180713
Issue:15
Page Number:8146 - 8156
DOI: 10.1021/acs.est.8b01269
ISSN/ISBN:1520-5851 (Electronic) 0013-936X (Linking)
Abstract:"Fine particulate matter (PM(2.5)), largely composed of secondary organic aerosol (SOA), is currently one of the most intractable environmental problems in China. As crucial precursors for SOA, understanding the formation propensity of various volatile organic compound (VOC) species and sources is useful for pollution control. In this work, we estimated the SOA formation potential (SOAP) of anthropogenic VOC emissions based on an improved speciated VOC emission inventory and investigated its distribution in China. According to our estimates, toluene had the largest SOAP, followed by n-dodecane, m-/p-xylene, styrene, n-decane, and n-undecane, while passenger cars, chemical fiber manufacturing, asphalt paving, and building coating were the top five SOAP-contributing sources nationwide. The spatial distribution of SOAP in China shows a distinct pattern of high values in the southeast and low values in the northwest. Beijing-Tianjin-Hebei and surroundings, the Yangtze River Delta, Pearl River Delta, and Sichuan-Chongqing District were found to have the highest SOAP, particularly in urban areas. The major SOAP-contributing species and sources differed among these regions, which was attributed to local industrial and energy structures. Our results suggest that to mitigate PM(2.5) pollution in China, more efficient SOAP-based control measures should be implemented instead of current emissions-based policies, and VOC control strategies should be adapted to local conditions"
Keywords:Aerosols *Air Pollutants Beijing China Environmental Monitoring *Volatile Organic Compounds;
Notes:"MedlineWu, Rongrong Xie, Shaodong eng Research Support, Non-U.S. Gov't 2018/06/29 Environ Sci Technol. 2018 Aug 7; 52(15):8146-8156. doi: 10.1021/acs.est.8b01269. Epub 2018 Jul 13"

 
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