干旱区生态环境知识资源中心(Arid): Geochemical factors controlling the occurrence of high-fluoride groundwater in the western region of the Ordos basin, northwestern China

Arid

DOI	10.1016/j.envpol.2019.06.046
	Geochemical factors controlling the occurrence of high-fluoride groundwater in the western region of the Ordos basin, northwestern China
	Su, He 1; Wang, Jiading 2; Liu, Jingtao 3
通讯作者	Wang, Jiading
来源期刊	ENVIRONMENTAL POLLUTION
ISSN	0269-7491
EISSN	1873-6424
出版年	2019
卷号	252 页码:1154-1162
英文摘要	Hydrogeochemistry and isotope hydrology were carried out to investigate the spatial distribution of fluoride (F-) and the mechanisms responsible for its enrichment in the western region of the Ordos basin, northwestern China. Sixty-two groundwater samples from the unconfined aquifer and fifty-six from confined aquifer were collected during the pre-monsoon (June 2016). Over 77% of groundwater samples from the unconfined aquifer (F- concentration up to 13.30 mg/L) and approximately 66% from confined aquifer (with a maximum F- concentration of 3.90 mg/L) exhibit F- concentrations higher than the Chinese safe drinking limit (1.0 mg/L). High-F- groundwater presents a distinctive hydrochemical characteristic: a high pH value and HCO3- concentration with Ca-poor and Na-rich. Mineral dissolution (e.g., feldspar, calcite, dolomite, fluorite), cation exchange and evaporation in the aquifers predominate the formation of groundwater chemistry, which are also important for F- enrichment in groundwater. Mixing with unconfined groundwater is a significant mechanism resulting in the occurrence of high-F- groundwater in confined aquifer. These findings indicate that physicochemical processes play crucial roles in driving F(- )enrichment and that may be useful for studying r occurrence in groundwater in arid and semi-arid areas. (C) 2019 Elsevier Ltd. All rights reserved.
英文关键词	High-F- groundwater Principal component analysis Stable isotopes Hydrogeochemical processes Ordos basin
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000483405400025
WOS关键词	AZUL CREEK BASIN ; HETAO BASIN ; CONTAMINATED GROUNDWATER ; SHALLOW GROUNDWATER ; PAMPEANO AQUIFER ; DRINKING-WATER ; YUNCHENG BASIN ; ARID AREAS ; ENRICHMENT ; EVOLUTION
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215495
作者单位	1.Taiyuan Univ Technol, Dept Earth Sci & Engn, Taiyuan 030024, Shanxi, Peoples R China; 2.Northwest Univ, Dept Geol, State Key Lab Continental Dynam, Northern Taibai Str 229, Xian 710069, Shaanxi, Peoples R China; 3.Chinese Acad Geol Sci, Inst Hydrogeol & Environm Geol, Shijiazhuang 050061, Hebei, Peoples R China
推荐引用方式 GB/T 7714	Su, He,Wang, Jiading,Liu, Jingtao. Geochemical factors controlling the occurrence of high-fluoride groundwater in the western region of the Ordos basin, northwestern China[J],2019,252:1154-1162.
APA	Su, He,Wang, Jiading,&Liu, Jingtao.(2019).Geochemical factors controlling the occurrence of high-fluoride groundwater in the western region of the Ordos basin, northwestern China.ENVIRONMENTAL POLLUTION,252,1154-1162.
MLA	Su, He,et al."Geochemical factors controlling the occurrence of high-fluoride groundwater in the western region of the Ordos basin, northwestern China".ENVIRONMENTAL POLLUTION 252(2019):1154-1162.