Spatial distribution and contamination assessment of heavy metals in urban road dusts from Urumqi, NW China

被引：247

作者：

Wei, Binggan ^{[1
,2
]}

Jiang, Fengqing ^{[1
]}

Li, Xuemei ^{[1
,2
]}

Mu, Shuyong ^{[1
]}

机构：

[1] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, 818 S Beijing Rd, Urumqi 830011, Xinjiang, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

MICROCHEMICAL JOURNAL | 2009年 / 93卷 / 02期

关键词：

Spatial distribution; Contamination assessment; Heavy metal; Road dust; Urumqi; STREET DUST; RISK-ASSESSMENT; SOILS; CITY; VEGETABLES; POLLUTION; ELEMENTS; IMPACT; AREA;

D O I：

10.1016/j.microc.2009.06.001

中图分类号：

O65 [分析化学];

学科分类号：

070302 [分析化学];

摘要：

This study reports the spatial distribution pattern and degree of heavy metal pollution (Cd, Cr, Cu, Ni, Pb, Mn, Be, Co, Zn and U) in 169 urban road dust samples from urban area of Urumqi city. The spatial distribution pattern shows that Cu, Pb, Cr and Zn have similar patterns of spatial distribution. Their hot-spot areas were mainly associated with main roads where high traffic density was identified. Ni and Mn show similar spatial distributions coinciding with the industrial areas, while the spatial distribution patterns of Co and U show hot-spot areas were mainly located in the sides of the urban area where the road dust was significantly influenced by natural soils. The spatial distributions of Be and Cd were very different from other metals. The geo-accumulation index suggests that road dust in Urumqi city was uncontaminated to moderately contaminated with Cd, Cu, Ni, Pb, Mn, Be, Zn and U. The integrated pollution index shows IPIs of all road dust samples were higher than 1, suggesting that the road dust quality of Urumqi city has clearly been polluted by anthropogenic emission of heavy metals. Moreover, the spatial distribution pattern of IPIs also shows several distribution trends in the studied region. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：147 / 152

页数：6

共 35 条

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