Grain size distribution of road-deposited sediment and its contribution to heavy metal pollution in urban runoff in Beijing, China
文献类型：期刊论文
| 作者 | Zhao, Hongtao ; Li, Xuyong ; Wang, Xiaomei ; Tian, Di |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2010-11-15 |
| 卷号 | 183期号:3页码:203-210 |
| 关键词 | Road-deposited sediment Grain size distribution Heavy metal loads Urban runoff Urban land use |
| 中文摘要 | Pollutant washoff from road-deposited sediment (RDS) is an increasing problem associated with the rapid urbanization of China that results in urban non-point source pollution. Here, we analyzed the RDS grain size distribution and its potential impact on heavy metal pollution in urban runoff from impervious surfaces of urban villages, colleges and residences, and main traffic roads in the Haidian District, Beijing, China. RDS with smaller grain size had a higher metal concentration. Specifically, particles with the smallest grain size (<44 mu m) had the highest metal concentration in most areas (unit: mg/kg): Cd 0.28-1.31, Cr 57.9-154, Cu 68.1-142, Ni 25.8-78.0, Pb 73.1-222 and Zn 264-664. Particles with smaller grain size (<250 mu m) contributed more than 80% of the total metal loads in RDS washoff, while suspended solids with a grain size <44 mu m in runoff water accounted for greater than 70% of the metal mass in the total suspended solids (TSS). The heavy metal content in the TSS was 2.21-6.52% of that in the RDS. These findings will facilitate our understanding of the importance of RDS grain size distribution in heavy metal pollution caused by urban storm runoff. (C) 2010 Elsevier B.V. All rights reserved. |
| WOS记录号 | WOS:000282607600025 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/20984]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhao, Hongtao,Li, Xuyong,Wang, Xiaomei,et al. Grain size distribution of road-deposited sediment and its contribution to heavy metal pollution in urban runoff in Beijing, China[J]. JOURNAL OF HAZARDOUS MATERIALS,2010,183(3):203-210. |
| APA | Zhao, Hongtao,Li, Xuyong,Wang, Xiaomei,&Tian, Di.(2010).Grain size distribution of road-deposited sediment and its contribution to heavy metal pollution in urban runoff in Beijing, China.JOURNAL OF HAZARDOUS MATERIALS,183(3),203-210. |
| MLA | Zhao, Hongtao,et al."Grain size distribution of road-deposited sediment and its contribution to heavy metal pollution in urban runoff in Beijing, China".JOURNAL OF HAZARDOUS MATERIALS 183.3(2010):203-210. |
入库方式： OAI收割
来源：生态环境研究中心
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