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	The Characterization and Sources of Polycyclic Aromatic Hydrocarbons in PM10 in Rural, China
	Ye B. X.; Krafft, T.; Yang, L. S.; Li, Y. H.; Li, H. R.; Wang, W. Y.; Pilot, E.
	2015
关键词	PAHs seasonal variations emission sources n-alkane distribution analysis PMF model organic-matter source apportionment seasonal-variation urban pahs aerosols city air uk precipitation
英文摘要	Polycyclic aromatic hydrocarbon (PAR) samples in particles were collected with a PM10 sampler in rural areas of Beijing. PAR samples collected on quartz fiber filters were first extracted using dichloromethane with ultrasonic methods, and then were fractionated on an alumina-silica column. Finally, the aromatic and n-alkane fractions were analyzed by gas chromatography with mass spectrometry and gas chromatography-combustion-isotope ratio mass spectrometry. The level of PAHs showed distinctly seasonal changes throughout the year, with the highest concentrations in January and lowest concentration in July. Sigma 16PAH concentrations ranged from 153.23 to 867.41 ng.nm(-3) in January, from 21.53 to 527.42 ng.m(-3) in April, from 1.84 to 32.02 ng.m(-3) in July, and from 14.86 to 114.81 ng.m(-3) in November. Potential PAR emission sources were identified using normal alkane distribution analysis, positive matrix factorization, and compound-specific stable carbon isotope analysis. The results revealed that vehicular emission was the major contributor, and it explained about 48.41% PAR source contribution. The petroleum source explaining 38.63% of the total PAHs was another major PAR source contributor. Coal combustion also was a major PAR contributor, totalling 30.45% of the contribution of PAHs in winter.
出处	Polish Journal of Environmental Studies
卷	24
期	2
页	909-915
收录类别	SCI
语种	英语
ISSN号	1230-1485
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/38516]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Ye B. X.,Krafft, T.,Yang, L. S.,et al. The Characterization and Sources of Polycyclic Aromatic Hydrocarbons in PM10 in Rural, China. 2015.

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