生态环境学报2011，Vol.20Issue(1)：169-174,6.
贵阳市区地表灰尘重金属污染分析与评价
Pollution analysis and evaluation of heavy metals in urban dust in Guiyang
摘要
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-use types(traffic areas, industrial area, commercial areas, residential area, cultural and educational area, public and square area). The results showed that the average concentration of heavy metals in the dust exceeded the soil background value in Guizhou. Cd, As, Cu were 4 times of the soil background value in Guizhou, the other heavy metals were 1-3 times of the soil background value. Based on the calculation results of heavy metal ecological risk index in street surface dust of Guiyang potential ecological risk of Hg was the highest, Cd was moderate and Cr was the least. Potential ecological risk of 6 land-use reached the strong ecological risk levels,industrial area and public area reached the highest.关键词
地表灰尘/重金属/潜在生态危害评价/贵阳Key words
surfacial dust heavy metal/ potential ecological risk assessment/ Guiyang分类
资源环境引用本文复制引用
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].生态环境学报,2011,20(1):169-174,6.基金项目
贵州省教育厅自然科学研究项目(黔教科[2008013]) （黔教科[2008013]）
贵州师范大学研究生专项创新基金项目[研2011(9)] （9）
