靖边县地下水氟影响因素及健康风险评价  

Study on the Geochemical Factorsof the Occurrence of High⁃Fluoride Water and Health Risk Assessment in Jingbian County

作　　者：周佩瑶 杨乔洋 王玮[1,2] ZHOU Peiyao;YANG Qiaoyang;WANG Wei(College of Water and Environment,Chang’an University,Xi’an 710054,China;Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region,Ministry of Education,Xi’an 710054,China)

机构地区：[1]长安大学水利与环境学院,陕西西安710054 [2]旱区地下水文与生态效应教育部重点实验室,陕西西安710054

出　　处：《人民黄河》2020年第7期67-72,共6页Yellow River

摘　　要：基于靖边县61组地下水样检测结果,运用相关性分析和水文地球化学方法,分析了F-分布特征及富集的影响因素,并结合US EPA非致癌健康风险评价模型进行了健康风险评价,结果表明:第四系含水层中F-超标区域分布于柠条梁、王渠则至县城一带,白垩系含水层F-超标区域为柠条梁和席麻湾至县城一带,超标面积较第四系含水层小;含氟矿物是F-的主要来源,蒸发作用、离子交换作用和矿物质的饱和状态是地下水中F-富集的主要原因,而人类活动的影响甚微;部分区域健康风险高,建议以第四系含水层中地下水为水源的地区建立除氟处理设施、集中供水或雨水收集系统,以确保饮用水安全。Based on the data of 61 groundwater samples from Jingbian,the correlation analysis and hydrogeochemical methods were applied to study the fluorine distribution characteristics and influencing factors.At the same time,the health risk assessment of F-was assessed with the health risk assessment model recommended by US EPA.The results show that the high⁃fluorine water of the quaternary aquifer mainly distrib⁃utes from Ningtiaoliang,Wangquze to the county,which of the cretaceous aquifer mainly distributes from Ningtiaoliang,Ximawan to the county.The fluorine content in the quaternary aquifer is higher than that in the cretaceous aquifer.Fluorine in groundwater primarily comes from the fluorine minerals.The main enrichment mechanisms of fluorine in groundwater are the evaporation condensation,ion exchange and mineral saturation and human factors have a small impact.The health risk of the quaternary aquifer is higher than that of the cretaceous aqui⁃fer.Establishing central water supply system and rainwater collecting system are suggested to guarantee safe drinking water in this area.

关 键 词：氟 第四系含水层 白垩系含水层 健康风险评价 靖边县 

分 类 号：P641[天文地球—地质矿产勘探]