Fluoride Distribution and Its Genetic Analysis in Quaternary Groundwater of Daxing District in Beijing
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Abstract:
Fluoride content in groundwater generally exceeds the standard in the southwest of Daxing district in Beijing, which seriously restricts the regional water supply. In this paper, the spatiotemporal distribution characteristics and range of high-fluoride groundwater were analyzed based on the sampling and chemical analysis of groundwater in the study area. The genesis of high-fluoride groundwater was analyzed according to regional hydrogeological , topographical, geological structures, hydrogeological, lithological, and water chemical characteristics, which suggested that shallow high-fluoride groundwater was due to evaporation preconcentration, and the fluoride content in deep groundwater was from fluoride-rich dolomite of basement rocks. This output is of great significance to the design and construction of regional water supply wells and the safety control of regional water supply.
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