Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.scitotenv.2015.05.038 |
Geochemical controls of high fluoride groundwater in Umarkot Sub-District, Thar Desert, Pakistan | |
Rafique, Tahir1; Naseem, Shahid2; Ozsvath, David3; Hussain, Riaz4; Bhanger, Muhammad Iqbal5; Usmani, Tanzil Haider1 | |
通讯作者 | Rafique, Tahir |
来源期刊 | SCIENCE OF THE TOTAL ENVIRONMENT
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ISSN | 0048-9697 |
EISSN | 1879-1026 |
出版年 | 2015 |
卷号 | 530页码:271-278 |
英文摘要 | Groundwater samples (n = 152) were collected in the Thar Desert of the Umarkot Sub-District, Pakistan to evaluate the geochemical controls on the occurrence of high fluoride (F-) levels within the study area. Fluoride concentrations range from 0.06 to 44.4 mg/L, with mean and median values of 5.22 and 4.09 mg/L, respectively; and roughly 84% of the samples contain fluoride concentrations that exceed the 1.5 mg/L drinking water standard set by WHO. The overall groundwater quality reflects the influences of silicate mineral weathering and evaporation. Fluoride originates from the weathering of minerals derived from Type-A granite and possibly anion exchange (OH- for F-) on clays and weathered micas under high pH conditions. High fluoride levels are associated with Na-HCO3 type water produced by calcite precipitation and/or base ion exchange. Depleted calcium levels in groundwater allow higher fluoride concentrations to occur before the solubility limit for fluorite is reached. (C) 2015 Elsevier B.V. All rights reserved. |
英文关键词 | Fluoride ions Mineral weathering Evaporation Calcite precipitation Base ion exchange Umarkot Thar Desert |
类型 | Article |
语种 | 英语 |
国家 | Pakistan ; USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000356605800031 |
WOS关键词 | WATER-ROCK INTERACTION ; BEDROCK GROUNDWATER ; SOUTH-KOREA ; AREA ; INDIA ; CHEMISTRY ; BASIN ; HYDROGEOCHEMISTRY ; CONTAMINATION ; BICARBONATE |
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/2XILL650/190368 |
作者单位 | 1.Appl Chem Res Ctr, Karachi 75280, Pakistan; 2.Univ Karachi, Dept Geol, Karachi 75270, Pakistan; 3.Univ Wisconsin, Dept Geog Geol, Stevens Point, WI 54481 USA; 4.Geol Survey Pakistan, Div Geophys, Karachi, Pakistan; 5.Univ Karachi, ICCBS, HEJ Res Inst Chem, Karachi, Pakistan |
推荐引用方式 GB/T 7714 | Rafique, Tahir,Naseem, Shahid,Ozsvath, David,et al. Geochemical controls of high fluoride groundwater in Umarkot Sub-District, Thar Desert, Pakistan[J],2015,530:271-278. |
APA | Rafique, Tahir,Naseem, Shahid,Ozsvath, David,Hussain, Riaz,Bhanger, Muhammad Iqbal,&Usmani, Tanzil Haider.(2015).Geochemical controls of high fluoride groundwater in Umarkot Sub-District, Thar Desert, Pakistan.SCIENCE OF THE TOTAL ENVIRONMENT,530,271-278. |
MLA | Rafique, Tahir,et al."Geochemical controls of high fluoride groundwater in Umarkot Sub-District, Thar Desert, Pakistan".SCIENCE OF THE TOTAL ENVIRONMENT 530(2015):271-278. |
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