Hydrogeochemistry of arsenic and other inorganic constituents in groundwaters from La Pampa, Argentina

Smedley, Pauline; Nicolli, Hugo; Macdonald, David; Barros, Aldre Jorge Morais; Tullio, J.O.

doi:10.1016/s0883-2927(01)00082-8

Cited by 538 publications

(235 citation statements)

References 30 publications

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“…Excessive intake of F from drinking water can cause dental and skeletal fluorosis, arthritis, decreased thyroid function and detrimental effects on the brain (Carton, 2006). In other parts of Argentina (Cordoba, Santa Fe and Buenos Aries), high concentrations of F have given rise to dental fluorosis (Smedley et al, 2002). Like B, the source SPR7 has a higher amount of F (2.38 mg L -1 ) than the taps (2.03-2.44 mg L -1 ), suggesting some removal of B during transport from the spring to the taps.…”

Section: Drinking Water Qualitymentioning

confidence: 99%

Geochemistry of As-, F- and B-bearing waters in and around San Antonio de los Cobres, Argentina, and implications for drinking and irrigation water quality

Hudson‐Edwards¹,

Archer²

2012

Journal of Geochemical Exploration

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Spring, stream and tap waters from in and around San Antonio de los Cobres, Salta, Argentina, were sampled to characterize their geochemical signatures, and to determine whether they pose a threat to human health and crops. The spring waters are typical of geothermal areas world-wide, in that they are Na-Cl waters with high concentrations of As tot , As(III), Li, B, HCO 3 , F and SiO 2 (up to 9. 49, 8.92, 13.1, 56.6, 1250, 7.30 and 57.2 mg L -1 , respectively), and result from mixing of deep Na-Cl brines and meteoric HCO 3 -rich waters. Springs close to the town of San Antonio have higher concentrations of all elements, and are generally cooler, than springs in the Baños de Agua Caliente. Spring water chemistry is a result of mixing of deep Na-Cl brines and meteoric HCO 3 waters. Stream waters are also Na-Cl type, and receive large inputs of all elements from the springs near San Antonio, but concentrations decrease downstream through the town of San Antonio due to mineral precipitation. The spring that is used as a drinking water source, and other springs in the area, have As, F and B concentrations in excess of WHO and Argentinian drinking water guidelines. Evaluation of the waters for irrigation purposes suggests that their high salinities and B concentrations may adversely affect crops. The waters may be improved for drinking and irrigation by dilution with cleaner meteoric waters, mineral 2 precipitation or by use of commercial filters. Such recommendations could also be followed by other settlements that draw drinking and irrigation waters from geothermal sources.

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Section: Drinking Water Qualitymentioning

confidence: 99%

Geochemistry of As-, F- and B-bearing waters in and around San Antonio de los Cobres, Argentina, and implications for drinking and irrigation water quality

Hudson‐Edwards¹,

Archer²

2012

Journal of Geochemical Exploration

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“…Suspension samples containing 1 and 30 mg/L As(V), 10 mg/L F, and 1 g/L TLAC were adjusted to desired pH values in the range of 4−12 with NaOH and HClO 4 . The samples were mixed on a rotator for 24 h.…”

Section: ■ Introductionmentioning

confidence: 99%

Fabrication, Characterization, and Application of a Composite Adsorbent for Simultaneous Removal of Arsenic and Fluoride

Jing

Cui

Hao

et al. 2012

ACS Appl. Mater. Interfaces

105

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Coexisting arsenic (As) and fluoride (F) in groundwater poses severe health risks worldwide. Highly efficient simultaneous removal of As and F is therefore of great urgency and high priority. The purpose of this study was to fabricate a novel composite adsorbent and explore the mechanism for concurrent removal of As(V) and F at the molecular level. This bifunctional adsorbent with titanium and lanthanum oxides impregnated on granular activated carbon (TLAC) exhibits a pronounced As(V) and F adsorption capacity over commercially available iron-and aluminumbased adsorbents for synthetic and real contaminated groundwater samples. Synchrotron-based X-ray microfluorescence analysis demonstrates that La and Ti were homogeneously distributed on TLAC. Extended X-ray absorption fine structure spectroscopic results suggest that As(V) formed bidentate binuclear surface complex as evidenced by an averaged Ti−As bond distance of 3.34 Å in the presence of F. Adsorption tests and Fourier transform infrared spectroscopy analysis indicate that F was selectively adsorbed on lanthanum oxides. The surface configurations constrained with the spectroscopic results were formulated in the charge distribution multisite complexation model to describe the competitive adsorption behaviors of As(V) and F. The results of this study indicate that TLAC could be used as an effective adsorbent for simultaneous removal of As(V) and F.

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“…Groundwater sampling was conducted according to standard procedures [19] [20] in June 2014 in BV. The production wells were chosen specifically based on the history of contamination records for arsenic and nitrate for each well.…”

Section: Sampling Preparation and Sampling Well Locationsmentioning

confidence: 99%

The Source of Arsenic and Nitrate in Borrego Valley Groundwater Aquifer

Rezaie-Boroon¹,

Chaney²,

Bowers³

2014

JWARP

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Hydrogeochemistry of arsenic and other inorganic constituents in groundwaters from La Pampa, Argentina

Cited by 538 publications

References 30 publications

Geochemistry of As-, F- and B-bearing waters in and around San Antonio de los Cobres, Argentina, and implications for drinking and irrigation water quality

Geochemistry of As-, F- and B-bearing waters in and around San Antonio de los Cobres, Argentina, and implications for drinking and irrigation water quality

Fabrication, Characterization, and Application of a Composite Adsorbent for Simultaneous Removal of Arsenic and Fluoride

The Source of Arsenic and Nitrate in Borrego Valley Groundwater Aquifer

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