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Title: Distribution and migration mechanism of fluoride in groundwater in the Manas River Basin, Northwest China

Abstract

Elevated fluoride (F) concentration in groundwater is posing a public health risk in the Manas River Basin (MRB), Northwest China. Based on the characterization of regional groundwater flow, 90 groundwater samples from aquifers were analyzed, along with top-soil leachate and pore-water samples from aquitards. Stable oxygen (δ{sup 18}O) and hydrogen isotopes, radiocarbon and hydrochemical analyses of the groundwater and pore-water samples were conducted to trace groundwater hydrological and hydrochemical processes and thereby understand the distribution and migration mechanism of F. The groundwater is recharged by meteoric precipitation through vapor condensation processes in the Tianshan Mountains. The F concentration in groundwater samples from this basin ranged from 0.11 to 48.15 mg/L (mean 2.56 mg/L). In 37 of the 90 groundwater samples, the F concentrations were above the safe level for drinking water. The F concentrations progressively increased with the residence time and well depths in the northwest of the alluvial-fluvial plain, where groundwater is overexploited for agricultural and domestic use. Positive correlations between F and sodium (Na)/calcium (Ca) indicate that the enrichment and migration of F are influenced by cation exchange processes under high-Na and alkaline pH conditions. The relationships between δ{sup 18}O and F and chloride (Cl) concentrations were nonlinear due tomore » leaching and mixing processes. This shows that vertical leaching by irrigation return flow and mixing with pore water are the dominant processes driving the migration of F in the groundwater flow system of MRB, in addition to geochemical processes.« less

Authors:
; ; ;  [1]
  1. China University of Geosciences, State Key Laboratory of Biogeology and Environmental Geology (China)
Publication Date:
OSTI Identifier:
22780861
Resource Type:
Journal Article
Journal Name:
Hydrogeology Journal
Additional Journal Information:
Journal Volume: 26; Journal Issue: 5; Other Information: Copyright (c) 2018 Springer-Verlag GmbH Germany, part of Springer Nature; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1431-2174
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 58 GEOSCIENCES; AQUIFERS; CALCIUM; CHINA; CHLORINE; DRINKING WATER; ECOLOGICAL CONCENTRATION; FLUORINE; GEOCHEMISTRY; GROUND WATER; GROUNDWATER RECHARGE; HEALTH HAZARDS; HYDROGEN ISOTOPES; ION EXCHANGE; IRRIGATION; LEACHATES; LEACHING; OXYGEN 18; PH VALUE; PRECIPITATION; PUBLIC HEALTH; RIVERS; SODIUM; SOILS; SPATIAL DISTRIBUTION; VAPOR CONDENSATION

Citation Formats

Liu, Yalei, Jin, Menggui, Ma, Bin, and Wang, Jianjun. Distribution and migration mechanism of fluoride in groundwater in the Manas River Basin, Northwest China. United States: N. p., 2018. Web. doi:10.1007/S10040-018-1780-8.
Liu, Yalei, Jin, Menggui, Ma, Bin, & Wang, Jianjun. Distribution and migration mechanism of fluoride in groundwater in the Manas River Basin, Northwest China. United States. doi:10.1007/S10040-018-1780-8.
Liu, Yalei, Jin, Menggui, Ma, Bin, and Wang, Jianjun. Wed . "Distribution and migration mechanism of fluoride in groundwater in the Manas River Basin, Northwest China". United States. doi:10.1007/S10040-018-1780-8.
@article{osti_22780861,
title = {Distribution and migration mechanism of fluoride in groundwater in the Manas River Basin, Northwest China},
author = {Liu, Yalei and Jin, Menggui and Ma, Bin and Wang, Jianjun},
abstractNote = {Elevated fluoride (F) concentration in groundwater is posing a public health risk in the Manas River Basin (MRB), Northwest China. Based on the characterization of regional groundwater flow, 90 groundwater samples from aquifers were analyzed, along with top-soil leachate and pore-water samples from aquitards. Stable oxygen (δ{sup 18}O) and hydrogen isotopes, radiocarbon and hydrochemical analyses of the groundwater and pore-water samples were conducted to trace groundwater hydrological and hydrochemical processes and thereby understand the distribution and migration mechanism of F. The groundwater is recharged by meteoric precipitation through vapor condensation processes in the Tianshan Mountains. The F concentration in groundwater samples from this basin ranged from 0.11 to 48.15 mg/L (mean 2.56 mg/L). In 37 of the 90 groundwater samples, the F concentrations were above the safe level for drinking water. The F concentrations progressively increased with the residence time and well depths in the northwest of the alluvial-fluvial plain, where groundwater is overexploited for agricultural and domestic use. Positive correlations between F and sodium (Na)/calcium (Ca) indicate that the enrichment and migration of F are influenced by cation exchange processes under high-Na and alkaline pH conditions. The relationships between δ{sup 18}O and F and chloride (Cl) concentrations were nonlinear due to leaching and mixing processes. This shows that vertical leaching by irrigation return flow and mixing with pore water are the dominant processes driving the migration of F in the groundwater flow system of MRB, in addition to geochemical processes.},
doi = {10.1007/S10040-018-1780-8},
journal = {Hydrogeology Journal},
issn = {1431-2174},
number = 5,
volume = 26,
place = {United States},
year = {2018},
month = {8}
}