| 贵阳市区地表灰尘重金属污染分析与评价 |
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| 引用本文： | 张一修,王济,张浩. 贵阳市区地表灰尘重金属污染分析与评价[J]. 生态环境, 2011, 20(1): 169-174 |
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| 作者姓名： | 张一修 王济 张浩 |
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| 作者单位： | 贵州师范大学地理与环境科学学院,贵州,贵阳,550001;贵州省山地资源与环境遥感应用重点实验室,贵州,贵阳,550001 |
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| 基金项目： | 贵州省教育厅自然科学研究项目，贵州师范大学研究生专项创新基金 |
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| 摘 要： | 以贵阳市区为研究地点,采集了贵阳城区工业区、交通区、商业区、居民区、文教区、公园广场、对照区7个类别共80个采样点的地表灰尘,分析了地表灰尘重金属在不同区域的分布特征,并分析其可能来源。最后,应用潜在生态危害指数法对6个功能区（工业区、交通区、商业区、居民区、文教区、公共区）样品中重金属的潜在生态危害进行评价。结果表明：贵阳市地表灰尘重金属的平均质量分数均高于贵州省土壤环境背景值,Cd、As、Cu污染质量分数都超过4倍以上背景值水平,其余重金属污染水平大多处于1~3倍背景值水平。就单个重金属潜在生态危害系数平均值来看,地表灰尘的潜在生态危害最大的是Hg,其次是Cd,生态危害最低的是Cr。6个功能区生态危害水平均属于强生态危害水平,其中工业区和公共区生态危害水平最高。
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| 关 键 词： | 地表灰尘 重金属 潜在生态危害评价 贵阳 |
Pollution analysis and evaluation of heavy metals in urban dust in Guiyang |
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| ZHANG Yixiu,WANG Ji,ZHANG Hao. Pollution analysis and evaluation of heavy metals in urban dust in Guiyang[J]. Ecology and Environmnet, 2011, 20(1): 169-174 |
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| Authors: | ZHANG Yixiu WANG Ji ZHANG Hao |
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| Affiliation: | ZHANG Yixiu,WANG Ji,ZHANG Hao 1.School of Geographical and Environment Sciences,Guizhou Normal University,Guiyang 550001,China,2.key Laboratory of Remote sensing applications in Resources and Environments,Guizhou 550001 |
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| Abstract: | This study focused on characterization of heavy metals in the dust of the city of Guiyang.80 surfacial dust samples were collected from 7 land-use types,such as industrial area,traffic area,commercial area,residential area,cultural and educational area,public and square area,as well as contrast area.Distribution characterization and possible sources of heavy metals of Hg,Cd,As,Pb,Cr,Cu,Ni and Zn were analysised.Potential ecological risk index was adopted to estimate the potential ecological risk of 6 land-u... |
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| Keywords: | surfacial dust heavy metal potential ecological risk assessment Guiyang |
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