淮北煤田煤系有机质中多环芳烃(PAHs)来源与组成分析

doi:10.19286/j.cnki.cci.2022.08.036

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Abstract In order to reveal the sources and compositions of polycyclic aromatic hydrocarbons (PAHs) in the coal organic matter of the Huaibei coalfield, samples of coal and mudstone from the Huaibei coalfield were analyzed qualitatively or quantitatively by chromatography-mass (GC-MS) spectrometry. The results showed that the percentages of PAHs in coal and mudstone ranged from 10.05% ~ 57.81% and 20.69% ~ 66.60%, respectively. Among the PAHs fractions, the proportion of phenanthrene is the highest (coal: 32.3% ~ 54.5%; mudstone: 38.9% ~ 55.0%); the second highest is chrysene with the values of 8.4% ~ 22.6% in coal and 10.3% ~ 18.8% in mudstone. The average content of all types of alkyl substituent compounds in the naphthalene, phenanthrene, biphenyl and tri-fluorene series of compounds far exceeded their native aromatics. The values of MP/P、Fla/(Fla + Py) and BaA/(BaA + Chy) indicate that the PAHs in the study area are mixed sources of diagenesis and combustion processes, mainly from diagenesis. The detection of naphthalene, phenanthrene, tri-fluorene and other series of aromatics and alkyl aromatics revealed the potential threat of toxic PAHs to the ecological environment and human health in the study area.

Key words： PAHs composition characteristics sources toxic PAHs ecological environment

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	Lu Zhao
	Li Qingguang

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Lu Zhao,Li Qingguang. Sources and compositions of polycyclic aromatic hydrocarbons(PAHs) in coal-based organic Matter from Huaibei Coalfield[J]. CCI, 2022, 45(8): 128-134.

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http://www.mtyhg.com.cn/EN/10.19286/j.cnki.cci.2022.08.036 OR http://www.mtyhg.com.cn/EN/Y2022/V45/I8/128

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