摘要
为探究赣南某废弃稀土矿山型工业园区地下水中金属污染特征及污染成因,采用空间分析、地下水质量评价和多元统计法对研究区75组地下水样品中6种超标率高的金属元素进行了分析。结果表明:研究区地下水受到不同程度的金属污染,不同点位金属浓度超标率从高到低依次为Mn(79%)、Be(58%)、Tl(58%)、Al(53%)、Fe(42%)和Pb(37%),其中A河所在的中部地区地下水污染明显,内梅罗综合污染指数评价结果同样表明地下水排泄区污染严重;Tl、Pb、Mn、Al之间存在高度相关性,相关系数分别为Tl-Pb(0.83)、Mn-Pb(0.59)、Mn-Al(0.58),说明这4种金属元素可能是复合污染或存在同源关系;造成该工业园区地下水金属浓度超标现状的主要原因为矿区历史开采活动和地质背景,其中矿山开采中浸矿活动为主要污染来源。
In order to explore the characteristics and causes of metal pollution in groundwater of an abandoned rare earth mine-type industrial park in Gannan, spatial analysis, groundwater quality evaluation and multivariate statistical methods were used to analyze 6 kinds of metal elements with high exceeding rate in 75 groups of groundwater samples in the study area. The results show that the study area is polluted by different degrees of metal pollution, and the over standard rates are Mn(79%), Be(58%), Tl(58%), Al(53%), Fe(42%) and Pb(37%), respectively, the groundwater pollution in the middle of A River is obvious, and the results of Nemerow comprehensive pollution index also show that the groundwater discharge area is seriously polluted.Tl, Pb, Mn and Al are highly correlated, and the correlation coefficients are Tl-Pb(0. 83), Mn-Pb(0. 59) and Mn-Al(0. 58), respectively, indicating that these four metal elements may be combined pollution or in homologous relationship. The main reasons for the current situation of groundwater metal concentration exceeding the standard in the industrial park are the historical mining activities and geological background of the mining area, among which the leaching activities in mining are the main sources of pollution.
作者
江驰
欧丽
黄田心
李洋
李彦琦
李曼曼
JIANG Chi;OU Li;HUANG Tianxin;LI Yang;LI Yanqi;LI Manman(Jiangxi Provincial Eco-Environment Monitoring Center,Nanchang 330039,China;School of Environmental Studies,China University of Geosciences(Wuhan),Wuhan 430078,China)
出处
《安全与环境工程》
CAS
CSCD
北大核心
2024年第5期190-198,共9页
Safety and Environmental Engineering
基金
中央环保储备库项目(H2020369900S1)。
关键词
地下水
稀土矿山
金属污染
成因分析
赣南地区
groundwater
rare earth mine
metal contamination
cause analysis
Gannan region
