Heavy Metal Contents of Road-Deposited Sediment along the Urban-Rural Gradient around Beijing and its Potential Contribution to Runoff Pollution

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 城市与区域生态国家重点实验室

	Heavy Metal Contents of Road-Deposited Sediment along the Urban-Rural Gradient around Beijing and its Potential Contribution to Runoff Pollution
	Zhao, Hongtao ; Li, Xuyong ; Wang, Xiaomei
刊名	ENVIRONMENTAL SCIENCE & TECHNOLOGY
	2011-09-01
卷号	45 期号:17 页码:7120—7127
中文摘要	Understanding the contribution of road-deposited sediment (RIDS) and its washoff process is essential for controlling urban runoff pollution. Ninety-seven RDS samples were collected along the urban suburban rural gradient from areas of five administrative units in the Beijing metropolitan region, including central urban (UCA), urban village (UVA), central suburban county (CSA), rural town (RTA), and rural village (RVA) areas. RIDS washoff,was evaluated with different particle sizes using a rainfall simulator. Heavy metal elements (i.e., Cr, Cu, Ni, Pb, and Zn) were estimated in both RIDS and runoff samples. The RDS mass per unit area increased in the order UCA (21 +/- 24 g/m(2)) v CSA (20 +/- 16 g/m(2)) < RTA (59 +/- 63 g/m(2)) < RVA (147 +/- 112 g/m(2))approximate to UVA (147 +/- 198 g/m(2)). Compared to RIDS from the other administrative units, RIDS from the UCA and CSA had higher metal concentrations and higher proportions of smaller particles, whereas that from the RVA and UVA had larger quantities of metals per unit area. UCA and CSA had lower potential runoff pollution contributions per unit area. Our findings imply that controlling the first flush in the UCA and CSA, and improving existing street cleaning methods and road surface conditions in the TM, UVA, and RVA will be appropriate strategies for controlling runoff pollution from RDS.
WOS记录号	WOS:000294373400007
公开日期	2012-10-16
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/7010]
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. Heavy Metal Contents of Road-Deposited Sediment along the Urban-Rural Gradient around Beijing and its Potential Contribution to Runoff Pollution[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2011,45(17):7120—7127.
APA	Zhao, Hongtao,Li, Xuyong,&Wang, Xiaomei.(2011).Heavy Metal Contents of Road-Deposited Sediment along the Urban-Rural Gradient around Beijing and its Potential Contribution to Runoff Pollution.ENVIRONMENTAL SCIENCE & TECHNOLOGY,45(17),7120—7127.
MLA	Zhao, Hongtao,et al."Heavy Metal Contents of Road-Deposited Sediment along the Urban-Rural Gradient around Beijing and its Potential Contribution to Runoff Pollution".ENVIRONMENTAL SCIENCE & TECHNOLOGY 45.17(2011):7120—7127.