水资源与水工程学报2016，Vol.27Issue(2)：36-44,9.DOI:10.11705/j.issn.1672-643X.2016.02.07
上海市地表灰尘与降水关系的分析
Analysis of relation between street dust and precipitation in Shanghai
摘要
Abstract
In order to investigate the influence of precipitation on street dust in Shanghai,the paper took the street dust of six different functional areas at Yangpu district of Shanghai as research object,and used environmental magnetic method to analyze the change of magnetism characteristics of street dust before and after precipitation. It measured the contents of eleven kinds of heavy metal element with ICP-MAS method,and used the enrichment factor method to analyze the enrichment condition of all kinds of heavy metals in the street dust. It analyzed the variation characteristics of street dust 's magnetism parameters and element concentrations at different functional areas with the factor of precipitation. The results showed that the street dust pollution in Yangpu district generally has higher level before the rain than that after the rain. Among all magnetic parameters involved, frequency-dependent susceptibilityχfd% is the most affected factor. The influence of precipitation on heavy metal element Pb is greater. In different functional areas,the industry and traffic area are more affected by precipitation, and the school area is less affected;degree of enrichment of heavy metal is Pb>As>Cd>Zn≈Mn≈Cr>Cu>Ni>Ca>Mg, some of these heavy metal had been enriched in the environment, such as Pb、Cr、Mn、Ni、Cu、Zn、As、Cd et al. The re-sults showed that precipitation has certain influence on magnetic feature and heavy metal content of street dust in city.关键词
环境磁学/地表灰尘/降水/富集因子Key words
environmental magnetism/street dust/rainfall/enrichment factor分类
资源环境引用本文复制引用
王冠,陈姣,张晓东,孙鹤晟,任非凡..上海市地表灰尘与降水关系的分析[J].水资源与水工程学报,2016,27(2):36-44,9.基金项目
国家自然科学基金项目(41001331) （41001331）
上海市自然科学基金项目(15ZR1428700) （15ZR1428700）
