江西兴国均村-高兴地区氟水文地球化学特征研究

Study on Fluorine Hydrogeochemical Characteristics of Xingguojun Village-Happy Area in Jiangxi Province

氟广泛分布于地下水且与人体健康相关,世界上许多国家和地区均存在高氟水。本文以江西省均村-高兴地区为例,结合区域水文地质调查成果开展地下水中氟水文地球化学特征研究,探讨研究区地下水中F-的分布特征与来源。对研究区4个地下水系统中的442个地下水样品的F-、Ca^(2+)、HCO_3^-浓度及pH值、TDS等进行分析,研究认为各地下水系统地下水中的F-浓度与Ca^(2+)浓度、HCO_3^-浓度、pH值、TDS正相关,含氟矿物的溶解是地下水中氟的主要来源,较强烈的地下水交替条件及弱酸性的地下水特征是导致地下水中氟浓度低的重要原因。

Fluorine is widely distributed in groundwater and is related to human health.High fluoride water exists in many countries and regions around the world.Taking the Hsinchu-Happy Area of Jiangxi Province as an example,this paper combines the results of regional hydrogeological survey to study the hydrogeochemical characteristics of groundwater in fluoride,and explores the distribution characteristics and sources of F-in groundwater in the study area.The F-,Ca2+,HCO3- concentration,pH,TDS,etc.of 442 groundwater samples from four groundwater systems in the study area were analyzed.The F-concentration and Ca2+ concentration,HCO3- concentration in groundwater of each groundwater system were considered.The pH value and TDS are positively correlated.The dissolution of fluorine-containing minerals is the main source of fluorine in groundwater.The strong groundwater alternating conditions and the weakly acidic groundwater characteristics are the important reasons for the low fluorine concentration in groundwater.