Distribution Characteristics，Source Analysis and Ecological Risk Assessment of Heavy Metals in the Typical Industry Reclaimed Soil

被引：1
|
作者：
Shen C. [1 ]
Wang W.-J. [2 ]
Sha C.-Y. [1 ]
Xie Y.-Q. [2 ]
Wang M. [1 ]
Wu J. [1 ]
机构：
[1] State Environmental Protection Engineering Center for Urban Soil Contamination Control and Remediation, Shanghai Academy of Environmental Sciences, Shanghai
[2] State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai
来源：
Huanjing Kexue/Environmental Science | 2024年 / 45卷 / 03期
关键词：
absolute factor analysis-multiple linear regression（APCS-MLR）; heavy metals; index of geo-accumulation; positive matrix factorization（PMF）; potential ecological risk; soil;
D O I：
10.13227/j.hjkx.202303085
中图分类号：
学科分类号：
摘要：
To further explore the characteristics of heavy metal pollution and the ecological risk of typical industries in reclaimed soil，based on data from 315 different depth profiles of soil samples collected from 49 plots in Jiading District，Shanghai，the geo-accumulation index and potential ecological risk index were used to evaluate the contents and potential ecological risk of seven heavy metals，namely Cd，Pb，Cu，Zn，Ni，Hg，and As. The APCS-MLR receptor model and PMF positive matrix factorization model were employed to analyze the pollution sources. The results showed that：1 except for As，the contents of other heavy metals in the soil of the study area exceeded the Shanghai soil background values to varying degrees. The contents of Cd，Pb，Cu，Zn，Ni，and Hg in the surface soil were 3. 54，2. 34，2. 91，1. 20，3. 75，and 4. 40 times the background values，respectively. The contents of heavy metals in the soil decreased with the increase in depth，and heavy metals were enriched to a certain extent in the surface soil，indicating that human activities had an impact on the distribution of heavy metals in the soil. 2 The APCS-MLR and PMF receptor models identified four main sources of soil heavy metals in the study area. Source 1（Cu，Zn，and Pb）was a mixture of metal products and automobile manufacturing，source 2（Ni and Cd）was electroplating enterprises，source 3（Hg）was mainly from chemical enterprises，and source 4（As）was natural. The combined use of the two receptor models further improved the accuracy and credibility of source identification. 3 The geoaccumulation index in descending order was Hg（1. 54）>Ni （1. 32）>Cd（1. 21）>Cu（0. 96）>Pb（0. 64）>Zn（-0. 33）>As（-1. 02）. The potential ecological risk index showed that the comprehensive potential ecological risk index RI value in the study area ranged from 32. 50 to 4 910. 97，with a mean of 321. 40，indicating a strong potential ecological risk. The pollution values of heavy metals Hg，Ni，and Cd in industrial site soil deserve further attention for re-development and utilization purposes. © 2024 Science Press. All rights reserved.
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页码：1769 / 1780
页数：11
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