气候变化领域集成服务门户(CCPortal): Source apportionment of fine organic carbon at an urban site of Beijing using a chemical mass balance model

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DOI	10.5194/acp-21-7321-2021
	Source apportionment of fine organic carbon at an urban site of Beijing using a chemical mass balance model
	Xu J.; Liu D.; Wu X.; Vu T.V.; Zhang Y.; Fu P.; Sun Y.; Xu W.; Zheng B.; Harrison R.M.; Shi Z.
发表日期	2021
ISSN	1680-7316
起始页码	7321
结束页码	7341
卷号	21 期号:9
英文摘要	Fine particles were sampled from 9 November to 11 December 2016 and 22 May to 24 June 2017 as part of the Atmospheric Pollution and Human Health in a Chinese Megacity (APHH-China) field campaigns in urban Beijing, China. Inorganic ions, trace elements, organic carbon (OC), elemental carbon (EC), and organic compounds, including biomarkers, hopanes, polycyclic aromatic hydrocarbons (PAHs), n-alkanes, and fatty acids, were determined for source apportionment in this study. Carbonaceous components contributed on average 47.2 % and 35.2 % of total reconstructed PM2.5 during the winter and summer campaigns, respectively. Secondary inorganic ions (sulfate, nitrate, ammonium; SNA) accounted for 35.0 % and 45.2 % of total PM2.5 in winter and summer. Other components including inorganic ions (K+, Na+, Cl-), geological minerals, and trace metals only contributed 13.2 % and 12.4 % of PM2.5 during the winter and summer campaigns. Fine OC was explained by seven primary sources (industrial and residential coal burning, biomass burning, gasoline and diesel vehicles, cooking, and vegetative detritus) based on a chemical mass balance (CMB) receptor model. It explained an average of 75.7 % and 56.1 % of fine OC in winter and summer, respectively. Other (unexplained) OC was compared with the secondary OC (SOC) estimated by the EC-tracer method, with correlation coefficients (R2) of 0.58 and 0.73 and slopes of 1.16 and 0.80 in winter and summer, respectively. This suggests that the unexplained OC by the CMB model was mostly associated with SOC. PM2.5 apportioned by the CMB model showed that the SNA and secondary organic matter were the two highest contributors to PM2.5. After these, coal combustion and biomass burning were also significant sources of PM2.5 in winter. The CMB results were also compared with results from the positive matrix factorization (PMF) analysis of co-located aerosol mass spectrometer (AMS) data. The CMB model was found to resolve more primary organic aerosol (OA) sources than AMS-PMF, but the latter could apportion secondary OA sources. The AMS-PMF results for major components, such as coal combustion OC and oxidized OC, correlated well with the results from the CMB model. However, discrepancies and poor agreements were found for other OC sources, such as biomass burning and cooking, some of which were not identified in AMS-PMF factors. © Author(s) 2021. This work is distributed under the Creative Commons Attribution 4.0 License.
语种	英语
scopus关键词	atmospheric pollution; concentration (composition); megacity; organic carbon; PAH; particulate matter; seasonal variation; source apportionment; urban area; Beijing [Beijing (ADS)]; Beijing [China]; China
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/246894
作者单位	School of Geography Earth and Environmental Science, University of Birmingham, Birmingham, B15 2TT, United Kingdom; National Engineering Research Center of Urban Environmental Pollution Control, Beijing Municipal Research Institute of Environmental Protection, Beijing, 100037, China; Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; Institute of Surface-Earth System Science, Tianjin University, Tianjin, 300072, China; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, China; Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; Faculty of Medicine, School of Public Health, Imperial College London, London, United Kingdom; Laboratoire des Sciences du Climat et de l'Environnement,...
推荐引用方式 GB/T 7714	Xu J.,Liu D.,Wu X.,et al. Source apportionment of fine organic carbon at an urban site of Beijing using a chemical mass balance model[J],2021,21(9).
APA	Xu J..,Liu D..,Wu X..,Vu T.V..,Zhang Y..,...&Shi Z..(2021).Source apportionment of fine organic carbon at an urban site of Beijing using a chemical mass balance model.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(9).
MLA	Xu J.,et al."Source apportionment of fine organic carbon at an urban site of Beijing using a chemical mass balance model".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.9(2021).