西北煤电集聚区不同水体水化学特征及氟成因  

Hydrochemical characteristics and fluorine genesis of different water bodies in coal-fired power agglomeration area of Northwest China

作　　者：韩萱 黄磊[1,2] 刘廷玺 侯泽明[1] 李艳娜 许江 HAN Xuan;HUANG Lei;LIU Ting-xi;HOU Ze-ming;LI Yan-na;XU Jiang(Inner Mongolia Water Resource Protection and Utilization Key Laboratory,Water Conservancy and Civil Engineering College,Inner Mongolia Agricultural University,Hohhot 010018,China;Cooperative Innovation Center of Inner Mongolia Autonomous Region for Comprehensive Management of Water Resources and Water Environment in the Yellow River Basin,Hohhot 010018,China)

机构地区：[1]内蒙古农业大学水利与土木建筑工程学院,内蒙古自治区水资源保护与利用重点实验室,内蒙古呼和浩特010018 [2]黄河流域内蒙段水资源与水环境综合治理自治区协同创新中心,内蒙古呼和浩特010018

出　　处：《中国环境科学》2024年第7期3810-3822,共13页China Environmental Science

基　　金：国家自然科学基金资助项目(52369003);内蒙古自治区自然科学基金资助项目(2023LHMS04011);准格尔旗应用技术研究与开发项目(2023YY-19);内蒙古自治区科技领军人才团队(2022LJRC0007);内蒙古农业大学基本科研业务费专项资金资助(BR22-12-04)。

摘　　要：为探明西北煤电集聚区不同水体水化学特征以及氟离子分布成因,以鄂尔多斯市补连塔矿区为研究对象,采用Piper三线图、主成分分析、相关性分析等方法,对采集的55个水样进行测试,结合非致癌健康评价模型对地下水中氟离子进行健康风险评估.结果表明:所有水样均呈现出弱碱性;Na^(+)、SO_(4)^(2-)是地表水以及深层地下水的优势离子,浅层地下水的优势离子为Ca2+和HCO_(3)-;地表水的水化学类型主要以SO_(4)·Cl-Na和HCO_(3)·SO_(4)-Na型为主,浅层地下水的化学类型较多,主要以SO_(4)·Cl-Na·Ca、HCO_(3)-Na·Mg、HCO_(3)-Mg和SO_(4)·Cl-Ca型为主,深层地下水则以HCO_(3)·SO_(4)-Ca和SO_(4)-Na型为主;其水化学特征主要受硅酸盐风化溶解作用影响,同时采煤活动促进了不同水体之间水化学转化;地表水、浅层地下水与深层地下水中F变化范围分别在0.16~4.82,0~0.69,0.08~6.26mg/L,地下水中F有19.35%的风险指数超过HQ=1,推测该地区地下水的高氟现象对人类健康产生一定的影响.In order to explore the hydrochemical characteristics of different water bodies and the causes of fluorine ion distribution in the Northwest coal-electricity agglomeration area,the Bulianta mining area in Ordos City was taken as the research object.The Piper three-line diagram,principal component analysis,correlation analysis and other methods were used to test the collected 55water samples,and the non-carcinogenic health assessment model was used to evaluate the health risk of fluorine ions in groundwater.The results show that all water samples were weakly alkaline;Na+and SO_(4)^(2-)were the dominant ions of surface water and deep groundwater,and the dominant ions of shallow groundwater were Ca^(2+)and HCO_(3)-.The hydrochemical types of surface water were mainly SO_(4)Cl-Na and HCO_(3)SO_(4)-Na.There are many chemical types of shallow groundwater,mainly SO_(4)Cl-Na·Ca,HCO_(3)-Na·Mg,HCO_(3)-Mg and SO_(4)Cl-Ca,while the deep groundwater is mainly HCO_(3)SO_(4)-Ca and SO_(4)-Na.Its hydrochemical characteristics are mainly due to the influence of silicate weathering and dissolution,and coal mining activities promote the interaction between different water bodies.The variation ranges of F-in surface water,shallow groundwater and deep layer were respectively 0.16~4.82,0~0.69,0.08~6.26mg/L in surface water,shallow groundwater and deep layer,respectively.19.35%of the risk index of F-in groundwater exceeded HQ=1,and it is assumed that the high fluorine phenomenon in groundwater in this area has certain impacts on human health.

关 键 词：地下水 地表水 水化学特征 主成分分析 氟离子 

分 类 号：X523[环境科学与工程—环境工程]