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题名: Distribution and risks of polycyclic aromatic hydrocarbons in suburban and rural soils of Beijing with various land uses
作者: Peng, Chi; Wang, Meie; Zhao, Yun; Chen, Weiping
刊名: ENVIRONMENTAL MONITORING AND ASSESSMENT
出版日期: 2016-03
卷号: 188, 期号:3, 页码:-
关键词: Health risk assessment ; Land use change ; Suburban ; Urbanization ; PAHs ; ILCRs
DOI: 10.1007/s10661-016-5156-z
部门归属: 城市与区域生态国家重点实验室
英文摘要: We investigated the sources, distribution, and health risks of polycyclic aromatic hydrocarbons (PAHs) in soils of peri-urban Beijing. The mean concentrations of total 16 PAHs in suburban and rural soils of Beijing were 321.8 +/- 408.2 and 219.2 +/- 233.5 ng/g, respectively. The PAH concentrations decreased along the urban-suburban-rural gradient and varied with land use categories. The industrial areas had the highest soil PAH concentrations followed by the living areas, roadsides, green areas, and agricultural areas. The major sources of PAHs in these soils were coal and biomass combustion. Traffic emission was not the dominant source of PAHs in peri-urban Beijing. At a few sites, high soil PAH contents were caused by point sources such as iron and steel plants and a wood preservative factory. The incremental lifetime cancer risks (ILCRs) of adults and children exposed to PAHs in the soils were acceptable. However, cautions should be paid to the abandoned industrial sites, which might be converted to residential area during the urbanization process.
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/35555
Appears in Collections:城市与区域生态国家重点实验室_期刊论文

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