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Environ Pollut

Title:		"Concentration, ozone formation potential and source analysis of volatile organic compounds (VOCs) in a thermal power station centralized area: A study in Shuozhou, China"
Author(s):		Yan Y; Peng L; Li R; Li Y; Li L; Bai H;
Address:		"School of Environment and Chemical Engineering, North China Electric Power University, Beijing 102206, China; College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi Province, China. School of Environment and Chemical Engineering, North China Electric Power University, Beijing 102206, China; College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi Province, China. Electronic address: penglin6611@163.com. College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi Province, China. School of Environment and Chemical Engineering, North China Electric Power University, Beijing 102206, China"
Journal Title:		Environ Pollut
Year:		2017
Volume:		20170125
Issue:
Page Number:		295 - 304
DOI:		10.1016/j.envpol.2017.01.026
ISSN/ISBN:		1873-6424 (Electronic) 0269-7491 (Linking)
Abstract:		"Volatile organic compounds (VOCs) from two sampling sites (HB and XB) in a power station centralized area, in Shuozhou city, China, were sampled by stainless steel canisters and measured by gas chromatography-mass selective detection/flame ionization detection (GC-MSD/FID) in the spring and autumn of 2014. The concentration of VOCs was higher in the autumn (HB, 96.87 mug/m(3); XB, 58.94 mug/m(3)) than in the spring (HB, 41.49 mug/m(3); XB, 43.46 mug/m(3)), as lower wind speed in the autumn could lead to pollutant accumulation, especially at HB, which is a new urban area surrounded by residential areas and a transportation hub. Alkanes were the dominant group at both HB and XB in both sampling periods, but the contribution of aromatic pollutants at HB in the autumn was much higher than that of the other alkanes (11.16-19.55%). Compared to other cities, BTEX pollution in Shuozhou was among the lowest levels in the world. Because of the high levels of aromatic pollutants, the ozone formation potential increased significantly at HB in the autumn. Using the ratio analyses to identify the age of the air masses and analyze the sources, the results showed that the atmospheric VOCs at XB were strongly influenced by the remote sources of coal combustion, while at HB in the spring and autumn were affected by the remote sources of coal combustion and local sources of vehicle emission, respectively. Source analysis conducted using the Positive Matrix Factorization (PMF) model at Shuozhou showed that coal combustion and vehicle emissions made the two largest contributions (29.98% and 21.25%, respectively) to atmospheric VOCs. With further economic restructuring, the influence of vehicle emissions on the air quality should become more significant, indicating that controlling vehicle emissions is key to reducing the air pollution"
Keywords:		Air Pollutants/*analysis Air Pollution/analysis Alkanes/analysis China Cities Coal Environmental Monitoring *Hot Temperature Ozone/*chemical synthesis/chemistry *Power Plants Seasons Vehicle Emissions/analysis Volatile Organic Compounds/*analysis Wind Bte;
Notes:		"MedlineYan, Yulong Peng, Lin Li, Rumei Li, Yinghui Li, Lijuan Bai, Huiling eng England 2017/01/31 Environ Pollut. 2017 Apr; 223:295-304. doi: 10.1016/j.envpol.2017.01.026. Epub 2017 Jan 25"