从土壤层到地下水的重金属危害评估:以吉林珲春盆地为例

IF 4.6 3区 地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY
China Geology Pub Date : 2024-01-01 DOI:10.31035/cg2022050
Xiao-Dong Guo , Qiang Liu , Hui-Rong Zhang , Xu-Fei Shi , Chuan-Yu Qin , Zhi-Qiang Zhang
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引用次数: 0

摘要

土壤中重金属的不断富集对地下水造成了潜在危害。以往的研究缺乏定量评估土壤中重金属对地下水危害的方法。基于地下水循环和固液平衡理论,构建了简单易用的土壤重金属向地下水迁移的通量模型。基于地下水环境容量,提出了一种创新的土壤重金属对地下水危害的评价方法,并在中国吉林省珲春盆地进行了应用。结果表明,研究区土壤重金属向地下水的通量从大到小依次为 Zn、Cu、As、Pb、Cd、Ni 和 Hg。大部分地区地下水中重金属(砷、汞、铜、铅、锌、镍和镉)的含量在 10 年内没有上升到环境容量的临界值。大部分乡镇土壤重金属对地下水的危害程度处于中等或中等以下水平。该评价方法可以简单快速地量化土壤重金属向地下水的通量,确定地下水对重金属的剩余容量,评价土壤重金属对地下水的危害程度,为相关部门开展土壤和地下水环境保护工作提供支持,并为相关学者开展类似研究提供参考。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Harmful evaluation of heavy metals from soil layer to the groundwater: Take the Jilin Hunchun Basin as an example

The continuous enrichment of heavy metals in soils has caused potential harm to groundwater. Quantitative methods to evaluate the harm of heavy metals in soil to groundwater are lacked in previous studies. Based on the theory of groundwater circulation and solid-liquid equilibrium, a simple and easy-to-use flux model of soil heavy metals migrating to groundwater is constructed. Based on groundwater environmental capacity, an innovative method for evaluating the harm of heavy metals in soil to groundwater is proposed, which has been applied in Hunchun Basin, Jilin Province, China. The results show that the fluxes of soil heavy metals into groundwater in the study area are Zn, Cu, As, Pb, Cd, Ni, and Hg in descending order. The content of heavy metals in groundwater (As, Hg, Cu, Pb, Zn, Ni, and Cd) in most areas has not risen to the threshold of environmental capacity within 10 years. The harm levels of soil heavy metals to groundwater in the most townships soils are at the moderate level or below. This evaluation method can quantify the flux of soil heavy metals into groundwater simply and quickly, determine the residual capacity of groundwater to heavy metals, evaluate the harm level of soil heavy metals to groundwater, provide support for relevant departments to carry out environmental protection of soil and groundwater, and provide a reference to carry out similar studies for related scholars.

©2024 China Geology Editorial Office.

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来源期刊
China Geology
China Geology GEOLOGY-
CiteScore
7.80
自引率
11.10%
发文量
275
审稿时长
16 weeks
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