上海市街道尘埃中碳组分污染特征

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Abstract

By detecting the carbon content of street dust in Shanghai, the correlation between organic carbon (OC) and elemental carbon (EC) was discussed. The feature ratio method was used to discuss the main sources of street dust. At the same time, the relationship between the magnetic parameters of street dust and the carbon content was analyzed. The results showed that OC and EC had a good correlation with a correlation coefficient of 0.84, indicating that the particulate matter has the same pollution source to some extent; the ratio of OC/EC was 1.82, which indicates that there was secondary pollution in street dust in Shanghai. Combined with SEM morphology analysis to identify the main sources of particulate pollution in Shanghai; the results showed that there was a certain correlation between carbon composition and magnetic parameters, and the magnetic parameters(χ_LF、SIRM、χ_ARM) can indicate the carbon content and secondary pollution level of street dust in Shanghai to some extent.

Key words： street dust carbon composition magnetism source Shanghai

Received: 27 September 2018

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X513

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	WANG Guan
	MA Li-juan
	WANG Yang-yang
	FANG Ai-dong

Cite this article:

WANG Guan,MA Li-juan,WANG Yang-yang等. Pollution characteristics of carbon components in street dust in Shanghai[J]. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(4): 1405-1411.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2019/V39/I4/1405

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