Distribution of Heavy Metals in Urban Dust on Regional Scale

CHEN Li; LI Feng-quan; YE Wei; ZHU Li-dong; WANG Tian-yang

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Distribution of Heavy Metals in Urban Dust on Regional Scale

- Distribution of Heavy Metals in Urban Dust on Regional Scale
- Bulletin of Soiland Water Conservation Vol. 30, Issue 6, Pages: 194-198(2011)
- 作者机构：
  
  浙江师范大学地理过程实验室,浙江,金华,321004
- 作者简介：
- 基金信息：
- DOI：
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- Published：2011
- 稿件说明：
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CHEN Li, LI Feng-quan, YE Wei, et al. Distribution of Heavy Metals in Urban Dust on Regional Scale[J]. Bulletin of Soiland Water Conservation, 2011, 30(6): 194-198.
DOI：

CHEN Li, LI Feng-quan, YE Wei, et al. Distribution of Heavy Metals in Urban Dust on Regional Scale[J]. Bulletin of Soiland Water Conservation, 2011, 30(6): 194-198. DOI：

摘要

根据47个城市的灰尘重金属Cd

Ni的监测资料

分析了重金属在区域尺度的分布规律。结果表明

灰尘重金属浓度分为5个等级

并在1～4倍的标准差内变化

在空间上呈西高东低

南高北低

自西南向东北减少的特征。各地区灰尘重金属含量依次呈:西南>西北>华南>华东>华北>华中>东北

且某些元素的空间分布还与我国阶梯地势相吻合。自然背景和人类活动都是重要的影响因素

前者对华北、华中和东北地区影响较大

后者对西北、西南和华南地区作用程度较高。另外

各重金属元素受人类活动的作用强度也不同

受影响强度依次呈:Cd>Hg>Zn>Pb>Cu>Ni>Cr。

Abstract

Distribution and characteristic of Cd

Ni of urban dust were analyzed on regional scale coming from forty-seven cities.The results showed that heavy metal concentrations were divided into five grades

and change from one to four times standard deviation.In space scale

they were high in western and southern

and low in eastern and northern

and reduced from southwest to northeast.The order of heavy metal content in each region was Southwest ChinaNorthwest ChinaSouth ChinaEast ChinaNorth ChinaCentral ChinaNortheast China.In addition

some elements

spatial distribution was consistent with the stepped topography of China.Soil background and human activity were important factors

the former mainly influenced North China

Central China and Northeast China

the latter played an important role in Northwest

Southwest and South China.The order of disturbance on heavy metal was CdHgZnPbCuNiCr.

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