Isotope and minor element geochemistry of high arsenic groundwater from Hangjinhouqi, the Hetao Plain, Inner Mongolia

被引:105
作者
Deng, Yamin
Wang, Yanxin [1 ]
Ma, Teng
机构
[1] China Univ Geosci, Sch Environm Studies, Wuhan 430074, Peoples R China
基金
中国国家自然科学基金;
关键词
ORGANIC-MATTER; BORON; BASIN; MOBILIZATION; BANGLADESH; ENRICHMENT; WATER; ACID; AREA; CONTAMINATION;
D O I
10.1016/j.apgeochem.2008.12.018
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
High As groundwater is widely distributed in the northwestern Hetao Plain, an and region with slow groundwater flow. Arsenic concentration in groundwater ranges from 1 to 1000 mu g/L. Most water samples have elevated salinities, with Cl and/or HCO3 as the dominant anions and Na as the dominant cation. High concentrations of As in shallow aquifers are associated with strongly reducing conditions, as evidenced by high concentrations of dissolved organic C (DOC), NH4, dissolved sulfide, arsenite and dissolved CH4, and relatively low concentrations of NO3- and SO42-. Results of the hydrochemical, and H and O isotope geochemical studies indicate that evapotranspiration is an important process controlling the enrichment of Na and Cl as well as trace elements such as As, B, F and Br in groundwater. In NaHCO3-dominated groundwaters, As, B and F were enriched. Decades of irrigation using Yellow River water has resulted in elevation of the groundwater level, which has accelerated salt accumulation in shallow groundwater and surface soil. In addition, irrigation is responsible for the release of some components from aquifer materials and mixing with saline groundwaters, as indicated by minor element and isotope geochemical data. Used to trace groundwater flow paths, Sr isotope composition also indicates that bedrock weathering is one of the primary sources of As in groundwater in the study area. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码:587 / 599
页数:13
相关论文
共 44 条
[1]   Arsenic enrichment in groundwater of the alluvial aquifers in Bangladesh: an overview [J].
Ahmed, KM ;
Bhattacharya, P ;
Hasan, MA ;
Akhter, SH ;
Alam, SMM ;
Bhuyian, MAH ;
Imam, MB ;
Khan, AA ;
Sracek, O .
APPLIED GEOCHEMISTRY, 2004, 19 (02) :181-200
[2]  
Bullen TD, 1998, ISOTOPE TRACERS IN CATCHMENT HYDROLOGY, P611
[3]   Cl/Br ratios and environmental isotopes as indicators of recharge variability and groundwater flow: An example from the southeast Murray Basin, Australia [J].
Cartwright, Ian ;
Weaver, Tamie R. ;
Fifield, L. Keith .
CHEMICAL GEOLOGY, 2006, 231 (1-2) :38-56
[4]  
Chen X, 2007, J HETAO U, V4, P57
[5]  
Clark I., 1997, ENV ISOTOPES HYDROLO
[6]   Uses of chloride/bromide ratios in studies of potable water [J].
Davis, SN ;
Whittemore, DO ;
Fabryka-Martin, J .
GROUND WATER, 1998, 36 (02) :338-350
[7]   Groundwater recharge history and hydrogeochemical evolution in the Minqin Basin, North West China [J].
Edmunds, W. M. ;
Ma, Jinzhu ;
Aeschbach-Hertig, W. ;
Kipfer, R. ;
Darbyshire, D. P. F. .
APPLIED GEOCHEMISTRY, 2006, 21 (12) :2148-2170
[8]   HYDROCHEMICAL EVOLUTION OF THE EAST MIDLANDS TRIASSIC SANDSTONE AQUIFER, ENGLAND [J].
EDMUNDS, WM ;
BATH, AH ;
MILES, DL .
GEOCHIMICA ET COSMOCHIMICA ACTA, 1982, 46 (11) :2069-2081
[9]  
[高胜利 GAO Shengli], 2007, [地质科技情报, Geological Science and Techology Information], V26, P35
[10]   BORON ADSORPTION MECHANISMS ON OXIDES, CLAY-MINERALS, AND SOILS INFERRED FROM IONIC-STRENGTH EFFECTS [J].
GOLDBERG, S ;
FORSTER, HS ;
HEICK, EL .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1993, 57 (03) :704-708