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A Nuclear Magnetic Resonance (NMR) and Fourier-Transform Infrared (FTIR) Study of Glycine Speciation on a Cd-Rich Montmorillonite
Adsorption Amino Acids Cadmium Glycine Montmorillonite Speciation
2011/12/6
Abstract: As a consequence of treatments with glycine solutions, glycine molecules enter the interlayer of both Ca- and Cd-rich montmorillonite. Measurements of d value suggest that at low glycine con...
Dissolution of well and poorly crystallized kaolinites: Al speciation and effects of surface characteristics
crystallized kaolinites surface characteristics dissolution behavio well-crystallized poorly crystallized
2012/3/31
This study compared surface characteristics and dissolution behavior of well-crystallized (KGa-1b)
and poorly crystallized (KGa-2) kaolinite standards. Atomic force microscopy (AFM) revealed that
pa...
Quantitative arsenic speciation in mine tailings using X-ray absorption spectroscopy
Quantitative arsenic speciation X-ray spectroscopy
2012/3/31
X-ray absorption fine structure spectroscopy (XAFS) was used to determine arsenic (As) oxidation state, local coordination (to a radius of ┆7Aⅹaround As), and the relative proportion of different As s...
In Situ Infrared Speciation of Adsorbed Carbonate on Aluminum and Iron Oxides
Attenuated Total Reflectance-Fourier Transform Infrared Carbonate Adsorption Electrophoretic Mobility Infrared Point of Zero Charge Point of Zero Net Proton Charge X-ray Diffraction
2011/12/22
Abstract: Surface adsorption mechanisms of dissolved inorganic carbon species on soil minerals are not well understood. Traditional infrared (IR) study of adsorbed species of inorganic carbon using ai...
Phosphorus speciation changes across the glass transition in polymerized alkali silicate glasses and melts
Phosphorus speciation glass transition alkali silicate glasses melts
2012/4/9
In situ, high-temperature Raman spectroscopy of Na,O.9SiO, glasses and melts with and without 2 mol% P,05 has been conducted to 1491 K (near the liquidus temperature). In the temperature range from 29...
Fe-Speciation in Kaolins: A Diffuse Reflectance Study
Diffuse reflectance spectroscopy Fe-speciation Kaolin Second derivative spectra
2011/12/28
Diffuse reflectance spectra of kaolins have been recorded in samples from different environments. They show the systematic presence of Fe-oxides, even in bleached kaolins, with no contribution from th...