Geochemical Evolution of Fluoride and Implication for F- Enrichment in Groundwater: Example from the Bilate River Basin of Southern Main Ethiopian Rift

doi:10.3390/w10121799

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院页岩气与地质工程重点实验室

	Geochemical Evolution of Fluoride and Implication for F- Enrichment in Groundwater: Example from the Bilate River Basin of Southern Main Ethiopian Rift
	Haji, Muhammed 1,2,3; Wang, Dongdong 1,2,3; Li, Lu 1,2,3; Qin, Dajun 1,2,4; Guo, Yi 1,2,3
刊名	WATER
	2018-12-01
卷号	10 期号:12 页码:20
关键词	fluoride hydrochemical characteristics water-rock interaction geochemical modeling bilate river basin South Ethiopia
ISSN号	2073-4441
DOI	10.3390/w10121799
英文摘要	Groundwater is the most important source of drinking water. Fluoride was found in high concentrations in the groundwater from deep wells of the water supply in the southern main Ethiopian rift. The high concentration of fluoride is dominantly geogenic rather than anthropogenic in origin, as the agricultural area was not found to be contaminated with NO3-. Knowledge of fluoride enrichment will help to provide management plans for developing deep groundwater and minimizing the health risks of exposure to fluoride. The chemical processes of fluoride were investigated in the waters in the Bilate River basin using hydrochemical and isotopic tools. The F- concentration ranged from 0.5 to 1.29 mg/L in water from shallow wells and from 0.48 to 5.61 mg/L in water from deep wells. Seventy percent of deep well samples had F- > 1.5 mg/L higher than the World Health Organization potable guideline. The high fluoride concentration in the groundwater was mainly situated in the rift valley of the Bilate River basin, in contrast with low F- groundwater in the highland. The concentration of fluoride was lowest in Ca-Mg-HCO3 type groundwater and highest in Na-HCO3 type groundwater. Moreover, F- was positively correlated with HCO3-, Na+, Na+/Ca2+ and pH in groundwater and Na+/Ca2+ ratios were increased along the flow path. Hydrogeological, hydrodynamic and hydrochemical conditions are responsible for fluoride accumulation in the deep aquifers. Strong dynamic flow in highland areas flush away weathered chemical components (e.g., F-). Thus, surficial weathering is not a major controlling factor for high concentrations of Fluoride in deep groundwater but the combination of silicate hydrolysis and ion exchange mainly control fluoride enrichment in stagnant flow environments.
资助项目	CAS-TWAS President's Fellowship for International PhD Students ; National Natural Sciences Foundation of China[41172215]
WOS关键词	GUARANI AQUIFER SYSTEM ; DRINKING-WATER ; AQUEOUS GEOCHEMISTRY ; DENTAL FLUOROSIS ; RICH GROUNDWATER ; KENYA ; PART ; AFAR
WOS研究方向	Water Resources
语种	英语
出版者	MDPI
WOS记录号	WOS:000455314300094
资助机构	CAS-TWAS President's Fellowship for International PhD Students ; CAS-TWAS President's Fellowship for International PhD Students ; CAS-TWAS President's Fellowship for International PhD Students ; CAS-TWAS President's Fellowship for International PhD Students ; National Natural Sciences Foundation of China ; National Natural Sciences Foundation of China ; National Natural Sciences Foundation of China ; National Natural Sciences Foundation of China ; CAS-TWAS President's Fellowship for International PhD Students ; CAS-TWAS President's Fellowship for International PhD Students ; CAS-TWAS President's Fellowship for International PhD Students ; CAS-TWAS President's Fellowship for International PhD Students ; National Natural Sciences Foundation of China ; National Natural Sciences Foundation of China ; National Natural Sciences Foundation of China ; National Natural Sciences Foundation of China ; CAS-TWAS President's Fellowship for International PhD Students ; CAS-TWAS President's Fellowship for International PhD Students ; CAS-TWAS President's Fellowship for International PhD Students ; CAS-TWAS President's Fellowship for International PhD Students ; National Natural Sciences Foundation of China ; National Natural Sciences Foundation of China ; National Natural Sciences Foundation of China ; National Natural Sciences Foundation of China ; CAS-TWAS President's Fellowship for International PhD Students ; CAS-TWAS President's Fellowship for International PhD Students ; CAS-TWAS President's Fellowship for International PhD Students ; CAS-TWAS President's Fellowship for International PhD Students ; National Natural Sciences Foundation of China ; National Natural Sciences Foundation of China ; National Natural Sciences Foundation of China ; National Natural Sciences Foundation of China
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/90216]
专题	地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者	Qin, Dajun
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Sanya Univ, Academician Zhaiming Guo Working Stn, Sanya 572000, Hainan, Peoples R China
推荐引用方式 GB/T 7714	Haji, Muhammed,Wang, Dongdong,Li, Lu,et al. Geochemical Evolution of Fluoride and Implication for F- Enrichment in Groundwater: Example from the Bilate River Basin of Southern Main Ethiopian Rift[J]. WATER,2018,10(12):20.
APA	Haji, Muhammed,Wang, Dongdong,Li, Lu,Qin, Dajun,&Guo, Yi.(2018).Geochemical Evolution of Fluoride and Implication for F- Enrichment in Groundwater: Example from the Bilate River Basin of Southern Main Ethiopian Rift.WATER,10(12),20.
MLA	Haji, Muhammed,et al."Geochemical Evolution of Fluoride and Implication for F- Enrichment in Groundwater: Example from the Bilate River Basin of Southern Main Ethiopian Rift".WATER 10.12(2018):20.