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Complexation at the edges of hydrotalcite: the cases of arsenate and chromate
(Elsevier Inc, 2012-11)
Sorption of CrO2 4 and HAsO2 4 by hydrotalcite, in its chloride form, was studied as a function of anion concentration. In both cases, the shape of the isotherms is langmuirian. The maximum uptake of CrO2 4 equals the ...
Arsenate adsorption at the sediment-water interface: Sorption experiments and modelling
(Springer, 2012-01)
Arsenate adsorption was studied in three clastic sediments, as a function of solution pH (4.0-9.0) and arsenate concentration. Using known mineral values, protolytic constants obtained from the literature and K ads values ...
Effects of pH and ionic strength on the adsorption of phosphate and arsenate at the goethite-water interface
(Academic Press Inc Elsevier Science, 2005-05)
The surface properties of a well-crystallized synthetic goethite have been studied by acid-base potentiometric titrations, electrophoresis, and phosphate and arsenate adsorption isotherms at different pH and electrolyte ...
Arsenate adsorption onto sediment-water interface: sorption experiments and modeling
(Springer, 2012-01)
Arsenate adsorption was studied in three clastic sediments, as a function of solution pH (4.0–9.0) and arsenate concentration. Using known mineral values, protolytic constants obtained from the literature and K ads values ...
Synthesis of a zinc–imidazole metal–organic framework (ZIF-8) using ZnO rods grown on cotton fabrics as precursors: arsenate absorption studies
(Springer, 2020-05)
A Zn-imidazolate metal–organic framework, ZIF-8, was synthesized using ZnO nanorods grown on cotton fibers as precursors. We monitored the synthesis path via X-ray diffraction, scanning electron microscopy, and thermogravimetric ...
Arsenic in porewaters of the unsaturated zone of an Argentinean watershed: Adsorption and competition with carbonate as important processes that regulate its concentration
(Springer, 2015-06)
The arsenic (As) concentration in porewaters of the unsaturated (vadose) zone of a watershed located in the Chaco-Pampean Plain of Argentina was investigated. A water displacement method using carbon tetrachloride was ...
Continuous flow method for the simultaneous determination of phosphate/arsenate based on their different kinetic characteristics
(Elsevier Science, 2011-06)
This paper proposes a new automated spectrophotometric method for the simultaneous determination of phosphate and arsenate without pre-treatment, which is faster, simpler, less expensive and hazardous than other well-known ...