南京市不同功能区路域表土重金属
污染评价及相关性分析

徐铭焓; 林涛; 余爱华; 周舒宇; 佟蕾

doi:10.3969/j.issn.1000-2006.2014.06.013

南京市不同功能区路域表土重金属污染评价及相关性分析

徐铭焓,林涛,余爱华,周舒宇,佟蕾

南京林业大学学报（自然科学版） ›› 2014, Vol. 38 ›› Issue (06) : 65-71.

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南京林业大学学报（自然科学版） ›› 2014, Vol. 38 ›› Issue (06) : 65-71. DOI: 10.3969/j.issn.1000-2006.2014.06.013

研究论文

南京市不同功能区路域表土重金属污染评价及相关性分析

徐铭焓,林涛,余爱华^*,周舒宇,佟蕾

作者信息 +

Assessment and correlation analysis on heavy metals contamination in urban road topsoils of different city zones in Nanjing

XU Minghan, LIN Tao, YU Aihua^*, ZHOU Shuyu, TONG Lei

Author information +

文章历史 +

摘要

为调查南京市路域表土重金属污染状况,在南京市5个功能区布设了1 500个监测点,分析测定重金属Cr、Cd、Ni、Pb、Zn的含量,并对其进行评价和相关性分析。结果表明,5个功能区均有不同程度的重金属富集。按照南京市土壤环境背景值标准进行单项污染指数法评价得出:5个功能区均存在Cd重度污染; Cr、Zn轻度污染(在风景名胜区不存在Zn污染); 无Ni污染; 在交通枢纽区、工业区及科教生活区均存在Pb轻度污染,其他功能区无Pb污染。各区域内梅罗综合污染指数、潜在生态危害指数由高到低依次为:交通枢纽区、工业区、科教生活区、商业区、风景名胜区。5个功能区综合污染均达重度,且除Cd生态危害水平极强外,Cr、Ni、Pb、Zn均为轻微危害水平。不同功能区5种重金属元素彼此间相关性程度不同,表明各区重金属污染来源不同。

Abstract

In order to investigate the heavy metal contamination of Nanjing's roadside topsoil, 1 500 monitoring points were placed in five function areas of Nanjing, and the contents of heavy metal(Cr, Cd, Ni, Pb, Zn)were measured for evaluation and correlation analysis. The results indicated the concentrations of heavy metals varied within the five urban function areas(UFAs). According to the environmental background of Nanjing soil, the single factor index was employed to evaluate synthetically the pollution level among UFAs. All UFAs were heavily polluted by Cd and slightly polluted by Cr and Zn. Scenic area(SA)sites had no Zn pollution and all UFAs had no Ni pollution. Transportation junction area(TJA), industry area(IA)and education and residential area(ERA)were polluted slightly by Pb while business area(BA)and scenic area(SA)contained no Pb pollution. The descending order of the Nemerow pollution index and potential ecological risk index in UFAs are TJA>IA>ERA>BA>SA. The integrated pollution of the UFAs were all severe, while the ecological risk of Cr, Ni, Pb, and Zn were all slight. The degree of Cd was extremely strong. The degree of correlation analysis from 5 kinds of heavy metals varied significantly among UFAs, suggesting that the sources of heavy metal pollution are different.

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徐铭焓,林涛,余爱华,周舒宇,佟蕾. 南京市不同功能区路域表土重金属污染评价及相关性分析[J]. 南京林业大学学报（自然科学版）. 2014, 38(06): 65-71 https://doi.org/10.3969/j.issn.1000-2006.2014.06.013

XU Minghan, LIN Tao, YU Aihua, ZHOU Shuyu, TONG Lei. Assessment and correlation analysis on heavy metals contamination in urban road topsoils of different city zones in Nanjing[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2014, 38(06): 65-71 https://doi.org/10.3969/j.issn.1000-2006.2014.06.013

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基金

收稿日期:2013-11-05 修回日期:2014-09-03
基金项目:“十二五”农村领域国家科技支撑计划(2011BAD38B0103); 国家级大学生创新创业训练计划(201210298026)
第一作者:徐铭焓,硕士生。*通信作者:余爱华,副教授。E-mail: Yuer@njfu.edu.cn。
引文格式:徐铭焓,林涛,余爱华,等. 南京市不同功能区路域表土重金属污染评价及相关性分析[J]. 南京林业大学学报:自然科学版,2014,38(6):65-71.