辽宁省典型城市道路尘PM<sub>2.5</sub>成分谱研究

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Abstract

To establish the road dust source profiles of PM_2.5 at typical cities of Liaoning, road dust samples were collected and analyzed for chemical compositions in Anshan and Panjin city. The main sources of road dust were identified by enrichment factor (EF) and ratio method. The similarity of the road dust profiles of Anshan and Panjin city was evaluated by coefficient of divergence (CD). The results showed that the main chemical compositions were organic carbon (OC) and crustal elements (Al, Ca, Mg, Fe and K). Except for Cu and V, the EF values for other elements in Anshan city were higher than those in Panjin city. The OC/EC values were (13.20±6.26) and (3.94±0.63) in Panjin and Anshan city, respectively, indicating the contribution from secondary organic carbon in Panjin and Anshan city; the NO₃^-/SO₄^2-ratios were (0.52±0.55) and (0.46±0.13), implying that the effects of stationary source (coal combustion) on PM_2.5 were more significant. The CD value is 0.354between Panjin and Anshan city, indicating that the two source profiles might be similar to some extent.

Key words： Liaoning Province road dust PM_2.5 source profiles enrichment factor ratio method coefficient of divergence

Received: 15 June 2017

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	Articles by authors
	ZHANG Wei
	JI Ya-qin
	ZHANG Jun
	ZHANG Lei
	WANG Wei
	WANG Shi-bao

Cite this article:

ZHANG Wei,JI Ya-qin,ZHANG Jun等. Study on the road dust source profile of PM_2.5 in Liaoning Province typical cities[J]. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(2): 412-417.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2018/V38/I2/412

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