生态环境学报2009，Vol.18Issue(5)：1777-1782,6.
上海市不同工业类型土壤重金属含量差异性分析
Analysis on differences of heavy metal concentrations in different types of industrial soil in Shanghai
摘要
Abstract
To reveal differences of heavy metal Concentrations in different types of industrial soil, taking Shanghai as an example, the study selected three industrial types of machine building, chemical industry, printing and dyeing which are more serious pollution, samples of soil was taken and analyzed. The results showed that heavy metals of As, Cr, Cu, Pb, Zn did not exceed the national envi-ronmental quality standards in Shanghai industrial soil, but the average of Ni reached 75.23 mg·kg~(-1), it is 1.5 times of national soil environmental quality standards. Taking Shanghai soil background value as an evaluation standard, except for As, each single-factor pollution index of element is greater than 1, Pollution levels were presented as: Ni>Zn、Pb> Cu>Cr>As; The integrated pollution index of printing and dyeing, machine building and chemical industry is greater than 2, which belong to moderate pollution. Pollution levels were as follows: printing and dyeing >chemical industry>machine building, which show dramatic cumulative trend. Correla-tion analysis and factor analysis were taken, the results showed that sources of Pb, Cu and Zn are similar, sources of Cr and Ni are similar, source of As is not similar with others. The contents of the first two ranges of elements are much higher than the background values, all of the over-limit rates were more than 90%, mainly affected by human activities. The content of As is consistent with the context value, and the main source is relevant with soil parent material. Through comparing analysis, Cr, Ni are mainly related with the discharge of pollutants, such as chemical and mechanical manufacturing enterprises. Pollutants in the production process of printing and dyeing enterprises may be the main sources of Pb, Cu, Zn. There are a number of elements accumulating in various types of industrial soil, showing a trend of combined pollution.关键词
上海市/工业污染/土壤环境/重金属污染Key words
Shanghai/ industrial pollution/ soil environment/ heavy metal pollution分类
资源环境引用本文复制引用
谢小进,康建成,李卫江,张建平,姚飞..上海市不同工业类型土壤重金属含量差异性分析[J].生态环境学报,2009,18(5):1777-1782,6.基金项目
上海市教委重点学科建设资助项目(J050402) （J050402）
