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	Major geochemical controls on fluoride enrichment in groundwater: A case study at Datong Basin, northern China
	Li Liang; Wang Yanxin; Wu Ya; Li Junxia
来源期刊	Journal of Earth Science
ISSN	1674-487X
出版年	2013
卷号	24 期号:6 页码:976-986
英文摘要	Hydrogeochemical investigations were carried out in the Datong (大同) Basin, northern China to understand the sources and mechanisms of fluoride enrichment in the groundwater. The results indicate that fluoride concentrations reached up to 7.2 mg/L, and the hydrochemical type changed from Ca-HCO_3, Ca-Mg-HCO_3 water in the recharge areas to Na-HCO_3, Na-Mg-HCO_3 in the flow-through area and ultimately to Na-Cl-HCO_3, Na-SO_4-Cl and Na-Cl in the discharge areas. The total fluorine contents in the soils ranged between 277.6 and 1 292.5 mg/kg, which can provide large amounts of fluorine from fluorine-bearing minerals, such as fluorite, biotite and amphibole. The concentration of water-soluble fluorine ranged from 3.9 to 49.9 mg/kg (mostly less than 1% of the total fluorine) in the soils and rocks that, may have released sufficient fluorine into the groundwater. The results of PHREEQC simulations indicate that most of the analyzed samples are under-saturated with respect to fluorite (CaF_2) from the recharge area to the discharge area. The fluctuation of F concentration in the 11 months indicates that the seasonal variation and the agricultural activity also affect the fluoride content in the groundwater. Fluoride enrichment in groundwater is predominantly controlled by fluorite solubility, residence time, evapotranspiration intensity and seasonal variation in this arid and semi-arid area.
英文关键词	hydrogeochemical Datong Basin fluoride groundwater
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Science & Technology - Other Topics
CSCD记录号	CSCD:5001351
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335285
作者单位	Li Liang, China University of Geosciences(Wuhan), State Key Laboratory of Biogeology and Environmental Geology, Wuhan, Hubei 430074, China.; Wang Yanxin, China University of Geosciences(Wuhan), State Key Laboratory of Biogeology and Environmental Geology, Wuhan, Hubei 430074, China.; Wu Ya, China University of Geosciences(Wuhan), State Key Laboratory of Biogeology and Environmental Geology, Wuhan, Hubei 430074, China.; Li Junxia, China University of Geosciences(Wuhan), State Key Laboratory of Biogeology and Environmental Geology, Wuhan, Hubei 430074, China.
推荐引用方式 GB/T 7714	Li Liang,Wang Yanxin,Wu Ya,et al. Major geochemical controls on fluoride enrichment in groundwater: A case study at Datong Basin, northern China[J],2013,24(6):976-986.
APA	Li Liang,Wang Yanxin,Wu Ya,&Li Junxia.(2013).Major geochemical controls on fluoride enrichment in groundwater: A case study at Datong Basin, northern China.Journal of Earth Science,24(6),976-986.
MLA	Li Liang,et al."Major geochemical controls on fluoride enrichment in groundwater: A case study at Datong Basin, northern China".Journal of Earth Science 24.6(2013):976-986.