RCEES OpenIR  > 城市与区域生态国家重点实验室
Understanding the relationship between heavy metals in road-deposited sediments and washoff particles in urban stormwater using simulated rainfall
Zhao, Hongtao; Li, Xuyong; Li, XY
2013
Source PublicationJOURNAL OF HAZARDOUS MATERIALS
Volume246Pages:267-276
AbstractUnderstanding the relationship between heavy metals in road-deposited sediments (RDS) and washoff particles is essential to controlling urban runoff pollution. RDS and its associated heavy metals were investigated along the urban-suburban-rural gradient around Beijing, China. RDS washoff and its associated metal contaminants in different particle size fractions were evaluated using simulated rainfall. The results showed that the washoff percentage of RDS decreased along the urban-rural gradient. The Cu, Zn, Ni, Cr and Pb contents in washoff particles were 28.1%, 20.0%, 19.7%, 11.6%, and 11.4% higher than those in RDS, respectively. Additionally, different metals showed increases in different chemical fractions. RDS particles <105 mu m accounted for 40% of the total mass in RDS, but 50%, 70% and 75% of the total metal content in RDS, washoff particle mass and washoff particle metal content, respectively. Rainfall intensity and duration affected the amount of metals in washoff, but did not lead to an increase in the percentage of metals with different chemical fractions in washoff particles. The findings presented herein will facilitate development of strategies for control of urban diffuse pollution from RDS. (c) 2012 Elsevier B.V. All rights reserved.
Department城市与区域生态国家重点实验室
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Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/7319
Collection城市与区域生态国家重点实验室
Corresponding AuthorLi, XY
Recommended Citation
GB/T 7714
Zhao, Hongtao,Li, Xuyong,Li, XY. Understanding the relationship between heavy metals in road-deposited sediments and washoff particles in urban stormwater using simulated rainfall[J]. JOURNAL OF HAZARDOUS MATERIALS,2013,246:267-276.
APA Zhao, Hongtao,Li, Xuyong,&Li, XY.(2013).Understanding the relationship between heavy metals in road-deposited sediments and washoff particles in urban stormwater using simulated rainfall.JOURNAL OF HAZARDOUS MATERIALS,246,267-276.
MLA Zhao, Hongtao,et al."Understanding the relationship between heavy metals in road-deposited sediments and washoff particles in urban stormwater using simulated rainfall".JOURNAL OF HAZARDOUS MATERIALS 246(2013):267-276.
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