气候变化领域集成服务门户(CCPortal): Source apportionment of atmospheric volatile aromatic compounds (BTEX) by stable carbon isotope analysis: A case study during heating period in Taiyuan, northern China

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DOI	10.1016/j.atmosenv.2020.117369
	Source apportionment of atmospheric volatile aromatic compounds (BTEX) by stable carbon isotope analysis: A case study during heating period in Taiyuan, northern China
	Li Y.; Yan Y.; Hu D.; Li Z.; Hao A.; Li R.; Wang C.; Xu Y.; Cao J.; Liu Z.; Peng L.
发表日期	2020
ISSN	1352-2310
卷号	225
英文摘要	Due to the high negative effects on health and environment, volatile aromatic compounds (benzene, toluene, ethylbenzene and xylene, BTEX) have drawn more and more attention recently. BTEX samples of four emission sources (coal combustion, vehicle exhaust, gasoline volatilization and solvent evaporation) and ambient air from three sampling sites (rural, urban and suburban) were collected during winter in Taiyuan, northern China. Gas chromatography–mass spectrometry and thermal desorption–gas chromatography–isotope ratio mass spectrometry were employed to investigate the composition characteristics and stable carbon isotopic (δ13C) analysis of BTEX, respectively. The results revealed that the δ13C value of BTEX for coal combustion, with the range of −23.8‰ to −25.2‰, was higher than that for vehicle exhaust, gasoline volatilization and solvent evaporation, ranging from −25.5‰ to −27.6‰, −28.0‰ to −30.9‰ and −27.7‰ to −32.1‰, respectively. Atmospheric BTEX concentrations were the highest at the suburban site (41.5 μg/m3) and the lowest at the rural site (27.0 μg/m3). The δ13C values of atmospheric BTEX at rural, urban and suburban sites ranged from −24.8‰ to −26.2‰ (average −25.3‰), −24.8‰ to −26.9‰ (average −26.0‰) and −23.9‰ to −25.4‰ (average −24.8‰), respectively, indicating that the suburban site was enriched in 13C relative to rural and urban sites. The B/T ratio results indicated that coal combustion was the primary source of atmospheric pollution in Taiyuan. The mean contribution of emission sources in all three sampling site were determined by adopting Isosource-based quantitative calculation. For rural, urban and suburban sites, coal combustion, as the major source, made mean contributions of 62.3%, 46.0% and 74.1%, while vehicle exhaust was responsible for 22.0%, 30.6% and 15.3%, respectively. Coal combustion and vehicle exhaust were the top two primary sources of BTEX in Taiyuan, especially coal combustion provided a half contribution to atmospheric BTEX. Therefore, implementing controls on coal combustion is crucial to reduce ambient volatile aromatic compound pollution, especially in areas with high coal consumption. © 2020 Elsevier Ltd
关键词	Atmosphere BTEX Emission sources Source apportionment Stable carbon isotope
语种	英语
scopus关键词	Aromatization; Carbon; Coal; Earth atmosphere; Evaporation; Gas chromatography; Gasoline; Isotopes; Mass spectrometry; Pollution; Rural areas; Toluene; Urban growth; Vehicles; BTEX; Composition characteristics; Emission sources; Isotope ratio mass spectrometry; Quantitative calculation; Source apportionment; Stable carbon isotopes; Volatile aromatic compounds; Coal combustion; aromatic compound; benzene; carbon; carbon 13; ethylbenzene; ortho xylene; toluene; atmospheric pollution; BTEX; carbon isotope; coal combustion; concentration (composition); heating; pollutant source; rural area; source apportionment; stable isotope; suburban area; volatile organic compound; volatilization; air pollution; ambient air; Article; China; combustion; evaporation; heating; isotope analysis; mass fragmentography; priority journal; rural area; suburban area; urban area; volatilization; China; Shanxi; Taiyuan
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/249263
作者单位	Key Laboratory of Resources and Environmental Systems Optimization, Ministry of Education, College of Environmental Science and Engineering, North China Electric Power University, Beijingm, 102206, China; Renewable Energy School, North China Electric Power University, Beijingm, 102206, China; Department of Gas Geology Petrochina RIPED, Langfang, 065007, China
推荐引用方式 GB/T 7714	Li Y.,Yan Y.,Hu D.,et al. Source apportionment of atmospheric volatile aromatic compounds (BTEX) by stable carbon isotope analysis: A case study during heating period in Taiyuan, northern China[J],2020,225.
APA	Li Y..,Yan Y..,Hu D..,Li Z..,Hao A..,...&Peng L..(2020).Source apportionment of atmospheric volatile aromatic compounds (BTEX) by stable carbon isotope analysis: A case study during heating period in Taiyuan, northern China.ATMOSPHERIC ENVIRONMENT,225.
MLA	Li Y.,et al."Source apportionment of atmospheric volatile aromatic compounds (BTEX) by stable carbon isotope analysis: A case study during heating period in Taiyuan, northern China".ATMOSPHERIC ENVIRONMENT 225(2020).