Distributions, sources and pollution status of 17 trace metal/metalloids in the street dust of a heavily industrialized city of central China
Distributions, sources and pollution status of 17 trace metal/metalloids in the street dust of a heavily industrialized city of central China
复制标题
中部某重工业城市街道灰尘中17种微量金属/类金属的分布、来源及污染现状
DOI：
10.1016/j.envpol.2013.07.041
复制
发表时间：
2013-11-01
影响因子：
8.9
通讯作者：
Sun, Guangyi
中科院分区：
文献类型：
--
作者：
Li, Zhonggen;Feng, Xinbin;Sun, Guangyi
以株洲市为研究对象，收集了具有代表性的17种微量金属/类金属元素的空间分布和污染状况。铅、锌、Cu、Cd、Hg、As、Sb、In、Bi、Ti、Ag、Ga等12种元素的浓度受西北边缘大型铅锌冶炼厂大气沉降的影响明显增大，并向中心方向呈下降趋势。三种金属（W， Mo和Co）在非常靠近硬质合金制造厂的样品中富集，而Ni和Cr似乎主要来自自然来源。其他行业和交通对观测元素积累的影响可以忽略不计。Cd、In、Zn、Ag和Pb是污染程度最高的5种金属/类金属，城市西北部受重金属污染尤为严重。(C) 2013 Elsevier Ltd.版权所有。
A series of representative street dust samples were collected from a heavily industrialized city, Zhuzhou, in central China, with the aim to investigate the spatial distribution and pollution status of 17 trace metal/metalloid elements. Concentrations of twelve elements (Pb, Zn, Cu, Cd, Hg, As, Sb, In, Bi, Ti, Ag and Ga) were distinctly amplified by atmospheric deposition resulting from a large scale Pb/Zn smelter located in the northwest fringe of the city, and followed a declining trend towards the city center. Three metals (W, Mo and Co) were enriched in samples very close to a hard alloy manufacturing plant, while Ni and Cr appeared to derive predominantly from natural sources. Other industries and traffic had neglectable effects on the accumulation of observed elements. Cd, In, Zn, Ag and Pb were the five metal/metalloids with highest pollution levels and the northwestern part of city is especially affected by heavy metal pollution. (C) 2013 Elsevier Ltd. All rights reserved.