上海市街道尘埃中碳组分污染特征

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摘要

通过测定上海市街道尘埃碳组分含量，探讨有机碳（OC）和元素碳（EC）的相关性，并使用特征比值法讨论街道尘埃的主要污染来源；同时，对比分析了街道尘埃磁学参数与碳组分含量的关系.结果表明，OC、EC具有较好的相关性，相关系数为0.84，表明颗粒物存在相同的污染源；OC/EC为1.82，表明上海市街道尘埃存在二次污染，结合SEM形貌分析判别上海市颗粒物污染的主要来源；同时碳组分与磁学参数存在一定的相关关系，磁学参数（χ_LF、SIRM、χ_ARM）在一定程度上可以指示上海市街道尘埃的碳组分含量及其二次污染水平.

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	王冠
	马丽娟
	王阳阳
	方爱冬

关键词 ：街道尘埃, 碳组分, 磁学, 来源, 上海市

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

收稿日期: 2018-09-27

PACS:

X513

基金资助:

国家自然科学基金资助项目（41001331，41874077）；上海市自然科学基金资助项目（15ZR1428700）

通讯作者: 王冠,副教授,wangguan@usst.edu.cn E-mail: wangguan@usst.edu.cn

作者简介: 王冠(1981-),女,陕西咸阳人,副教授,博士,主要从事环境磁学及城市污染研究.发表论文20余篇.

引用本文:

王冠, 马丽娟, 王阳阳, 方爱冬. 上海市街道尘埃中碳组分污染特征[J]. 中国环境科学, 2019, 39(4): 1405-1411. WANG Guan, MA Li-juan, WANG Yang-yang, FANG Ai-dong. Pollution characteristics of carbon components in street dust in Shanghai. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(4): 1405-1411.

链接本文:

http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2019/V39/I4/1405

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