| 张俊,罗梦,沈露,吴蓉.工业型城市不同道路两侧土壤重金属污染状况对比分析[J].井冈山大学自然版,2017,(4):38-44,51 |
| 工业型城市不同道路两侧土壤重金属污染状况对比分析 |
| CONTRASTIVE ANALYSIS OF HEAVY METAL CONTAMINATION ON DIFFERENT ROADS IN INDUSTRIAL CITY |
| 投稿时间：2017-01-02 修订日期：2017-05-06 |
| DOI：10.3969/j.issn.1674-8085.2017.04.007 |
| 中文关键词: 工业型城市 不同道路 土壤重金属 污染对比分析 来源分析 |
| 英文关键词: industrial city different roads soil heavy metals pollution contrast analysis source analysis |
| 基金项目:安徽省大学生创新创业训练计划项目（201614203036）；安徽省高等教育振兴计划（2015zytz076）；河海大学文天学院校级科研项目（WT15013ZD，WT16006） |
| 作者 | 单位 | | 张俊 | 河海大学文天学院土木工程系, 安徽, 马鞍山 243031
河海大学文天学院岩土与地质工程研究所, 安徽, 马鞍山 243031 | | 罗梦 | 河海大学文天学院土木工程系, 安徽, 马鞍山 243031
河海大学文天学院岩土与地质工程研究所, 安徽, 马鞍山 243031 | | 沈露 | 河海大学文天学院土木工程系, 安徽, 马鞍山 243031
河海大学文天学院岩土与地质工程研究所, 安徽, 马鞍山 243031 | | 吴蓉 | 河海大学文天学院土木工程系, 安徽, 马鞍山 243031
河海大学文天学院岩土与地质工程研究所, 安徽, 马鞍山 243031 |
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| 中文摘要: |
| 在安徽省某市主干路、次干路和支路3种类型道路两侧22个采样点重金属含量测试的基础上，运用地累积指数法和潜在生态危害指数法对土壤中Mn、Pb、Co、Cr、As和Cd6种重金属进行污染分析和风险评价，并运用因子分析法和聚类分析法对重金属来源进行识别。结果表明：某市道路两侧土壤重金属元素平均含量从大到小依次为Mn > Pb > Co > Cr > As > Cd，次干路的Cr含量相对主干路和支路要低的多；地累积指数表明，城区主干路、次干路、支路两侧土壤均存在一定程度的重金属污染，Cr尚未污染或强污染，整体状况良好，Mn属于中等污染水平，Co、Pb属于强污染水平，Cd属于极严重污染水平；潜在生态危害指数法表明，Cd为严重生态风险程度，Pb、Co为较重生态风险程度，As为中等生态风险程度，Mn、Cr为低生态风险程度，从总体潜在生态危害指数来看，次干路的生态风险相对主干路、支路要低，均已达到严重潜在生态风险程度，后期土壤环境治理过程中应加强对Cd、Pb、Co的治理；因子分析从重金属元素中提取了2个主成分，可解释总变量86.277%，PC1（Cd、As、Cr）表示工业污染，PC2（Pb、Mn、Co）表示交通污染。 |
| 英文摘要: |
| Based on the analysis of heavy metal content in 22 sampling points beside the road, geoaccumulation index and potential ecological risk index methods were used to evaluate the pollution of soils of Ma'anshan City, Anhui Province, and sources of the heavy metals were identified using cluster and factor analysis. Results showed that the average contents of heavy metals in the soil along the road were in the order of Mn > Pb > Co > Cr > As > Cd in Ma'anshan city. Cr content in the secondary road was much lower than that in the main road and slip road. The potential ecological risk index showed that there were heavy metal pollution in some areas on the main trunk road, secondary trunk road and branch road. Cr was not polluted or intensively polluted, the whole condition was good, Mn was at moderate pollution level, Co and Pb belonged to strong pollution level, Cd was at very serious pollution level. Potential ecological risk index showed that Cd is a serious ecological risk, Pb and Co are serious ecological risks as medium ecological risk degree,Mn and Cr are low ecological risk degree,from the total potential ecological risk degree,the ecological risk of secondary roads is lower than that of the main roads and branches.Factor analysis of the rotated component matrix extracted 2 principal components (PC1and PC2) out of the heavy metal element variables,which tallied quite nicely with the result of the cluster analysis and were adequate to explain 86.277% of the total variable.Specifically,PC1(Pb,Mn,Co) represents industrial pollution, and PC2(Cd,As,Cr) represents the main pollution. |
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