摘要
本文以灵武市北部地下水中氟为研究对象,依据野外调查数据,分析研究区地下水中氟的空间分布特征及影响因素.结果表明,水平方向上,研究区地下水中氟的含量总体上呈东高西低;垂直方向上,潜水和承压水中氟离子空间分布差异较小.地下水中F-含量空间异质性主要由区域性因素引起,地下水中的氟主要来自地层中含氟矿物,潜水中F-富集受蒸发浓缩、岩石风化和阳离子交替作用影响,承压水中F-浓度受岩石风化作用和阳离子交替作用影响.
Based on field-work data,this paper analyzed the spatial distribution characteristics and its influencing factors of fluorine content in groundwater in the northern part of Lingwu City.Results showed that in the horizontal direction the fluorine concentration gradually decreased from the east to the west.Vertically,the fluorine concentration in phreatic and confined water had little difference.Spatial heterogeneity of fluorine content mainly caused by regional factors and fluorine in groundwater primarily came from the fluorine minerals in stratum.In addition,the enrichment of fluoride in phreatic was mainly affected by evaporation,rock weathering and cation alternation.Rock weathering and cation alternation were the major factors of confined water fluorine enrichment.
作者
李英
吴平
张勃
黄小琴
韩强强
李阳
徐兆祥
余堃
LI Ying;WU Ping;ZHANG Bo;HUANG Xiaoqin;HAN Qiangqiang;LI Yang;XU Zhaoxiang;YU Kun(Institute of Hydrogeology and Environmental Geology of Ningxia,Yinchuan,750011,China;Geological Bureau of Ningxia Hui Autonomous Region,Yinchuan,750021,China;School of Water Resources&Environment,China University of Geosciences,Beijing,100083,China)
出处
《环境化学》
CAS
CSCD
北大核心
2020年第9期2520-2528,共9页
Environmental Chemistry
基金
宁夏自然科学基金(2017A0426,2018AAC03205)
宁夏财政厅项目“沿黄生态经济带地下水资源开发利用与生态环境保护效应调查评价”(6400201901273)
第三批宁夏青年科技人才托举工程共同资助
关键词
灵武市北部
高氟地下水
分布特征
影响因素
northern part of Lingwu City
high fluoride groundwater
distribution characteristics
formation factors
