Potentially toxic metal contamination of urban soils and roadside dust in Shanghai, China
Potentially toxic metal contamination of urban soils and roadside dust in Shanghai, China
复制标题
中国上海城市土壤和路边灰尘的潜在有毒金属污染
DOI：
10.1016/j.envpol.2008.02.027
复制
发表时间：
2008-11-01
影响因子：
8.9
通讯作者：
Teng, Jiyan
中科院分区：
文献类型：
--
作者：
Shi, Guitao;Chen, Zhenlou;Teng, Jiyan
为了解上海市部分有毒金属污染特征，对上海市部分地区进行了详细调查。对市区273个土壤/灰尘样品中Pb、Zn、Cu、Cr、Cd和Ni的含量进行了测定。结果表明，除Ni外，其它金属在土壤中的含量都很高，路边尘中的金属污染更为严重。通过地统计学分析，绘制了一系列重金属空间分布图，发现污染热点区域主要集中在城市核心区、主要道路交叉口和靠近工业区的区域。通过地统计学和多元统计分析方法对重金属的来源进行了分析，得出如下结论：Pb、Zn、Cu主要来源于交通污染物，土壤Ni主要来源于自然富集，Cd主要来源于点源工业污染，粉尘中Cr、Ni主要来源于大气沉降。(C)2008年由Elsevier Ltd.出版
A detailed investigation was conducted to understand the contamination characteristics of a selected set of potentially toxic metals in Shanghai. The amount of Pb, Zn, Cu, Cr, Cd and Ni were determined from 273 soil/dust samples collected within urban area. The results indicated that concentration of all metals except Ni in soils was significant, and metal pollution was even severer in roadside dust. A series of metal spatial distribution maps were created through geostatistical analysis, and the pollution hotspots tended to associate with city core area, major road junctions, and the regions close to industrial zones. Ill attempt of identifying the source of metals through geostatistical and multivariate statistical analyses, it was concluded as follows: Pb, Zn and Cu mainly originated from traffic contaminants: soil Ni was associated with natural concentration; Cd largely came from point-sourced industrial pollution; and Cr, Ni in dust were mainly related to atmospheric deposition. (C) 2008 Published by Elsevier Ltd.