报废汽车拆解基地大气中多环芳烃

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Abstract On the basis of the data analyzed from the samples collected in the study, the concentration distribution characteristics and component characteristics of PAHs in each region of the scrap vehicle dismantling base were analyzed. The main sources of the pollutants in the scrap vehicle dismantling base were investigated using positive definite factor matrix model (PMF). The BaP toxic equivalent method (BaPeq), incremental lifetime carcinogenic risk (ILCR) model and comprehensive scoring method were employed to evaluate the impact of PAHs on human health and to identify priority controlling pollutants of PAHs. The results showed that concentration of PM_2.5, PM₁₀, and gas phase was respectively 0.638μg/m³, 0.634μg/m³ and 1.6131μg/m³; illustrating that the concentration of PAHs in gas phase was much higher than that in particulate matter. The order of the concentration of PAHs in both gas phase and particular matter according to ring number was 2~3rings> 4rings> 5~6rings; the main sources of the pollutants were identified as synthetic fiber emission and petroleum volatileization; The carcinogenic risk may exist in the scrap car storage area, other areas in the factory, mechanical crushing area, car dismantling area, vehicle dismantling area and manual sorting area; The priority controlling pollutants were identified and their controling order shall be Nap> Chr> Flu> Fla> BaA> BbF> BaP> BkF> IcdP> BghiP.

Key words： polycyclic aromatic hydrocarbons (PAHs) distribution characteristics positive definite factor matrix model (PMF) source analysis human health risk assessment priority control of pollutants

Received: 02 November 2022

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X513

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	Articles by authors
	RAN Xue-ling
	LI Lin
	QIN Yu-fei
	LIANG Yun-yan
	XIE Hai-hua
	HE Zi-zhen
	WANG Jian-bo
	LU Yan
	ZHAN Lu
	XU Zhen-ming

Cite this article:

RAN Xue-ling,LI Lin,QIN Yu-fei等. Polycyclic aromatic hydrocarbons about the atmosphere in scrap vehicle dismantling base[J]. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(6): 2777-2787.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2023/V43/I6/2777

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