Arid
DOI10.1016/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, He1; Wang, Jiading2; Liu, Jingtao3
通讯作者Wang, Jiading
来源期刊ENVIRONMENTAL POLLUTION
ISSN0269-7491
EISSN1873-6424
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.
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