内蒙古新巴尔虎右旗高氟水分布特征及成因分析  

Spatial Distribution Characteristics and Origin of High Fluorine Groundwater in Xin Barag Youqi,Inner Mongolia

作　　者：裴圣良 白光宇[1] 田磊[1] 张进德[1] PEI Shengliang;BAI Guangyu;TIAN Lei;ZHANG Jinde(China Institute of Geo-Environmental Monitoring,Beijing 100081,China)

机构地区：[1]中国地质环境监测院,北京100081

出　　处：《地球与环境》2020年第2期203-209,共7页Earth and Environment

基　　金：全国矿山地质环境综合调查与评价项目(DD20190701).

摘　　要：高氟地下水是广泛分布于我国北方干旱半干旱地区的一种典型劣质水源,长期饮用会对人体造成严重的危害。本文以内蒙古呼伦贝尔典型高氟水地区为研究范围,对新巴尔虎右旗地区地下水、地表水水质分析结果进行统计分析、水化学类型、因子分析等方面的研究。结果表明,本区地下水F-含量普遍超标,氟离子平均含量为2. 24 mg/L,极值达6 mg/L。高氟水在空间上多分布于侏罗系火山岩及花岗岩地区的基岩裂隙水中,水化学类型以HCO3-Ca·Na为主。综合分析研究区气候、水文、地质等条件,本文认为自然因素在研究区高氟水的成因中占主要因素,人为因素影响较小,蒸发浓缩作用和岩氟淋滤作用是地下水氟离子富集的主要机制。High fluorine groundwater is a typical poor-quality water distributed widely in arid and semi-arid regions of northern China,can cause serious harms to human body if used as drinking-water for a long term. In this paper selected the typical high fluorine water area in Hulun Buir,Inner Mongolia as the research area,the groundwater and surface water samples from Xin Barag Youqi were analyzed by methods of statistical analysis,hydrochemical type and factor analysis. The results showed that the measured maximum fluoride content in groundwater samples was 6 mg/L and the average fluoride content was 2. 24 mg/L. The high fluorine groundwater,whose hydrochemical type is the HCO3-Ca·Na type,distributed mainly in fissures of Jurassic volcanic rocks and granite areas. By comprehensive analyzing of climate,hydrogeology and geology conditions in the study area,this paper concluded that natural factors play major roles in the formation of high fluorine water in the study area,and human factors have a small impact. The main enrichment mechanisms of fluorine in groundwater are the evaporation condensation and the leaching enrichment.

关 键 词：高氟水 分布 水化学特征 成因分析 内蒙古 呼伦贝尔 

分 类 号：P641[天文地球—地质矿产勘探]