Mechanisms of Arsenic Adsorption on Amorphous Oxides Evaluated Using Macroscopic Measurements, Vibrational Spectroscopy, and Surface Complexation Modeling
作者： Sabine Goldberg , Cliff T. Johnston
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摘要: Arsenic adsorption on amorphous aluminum and iron oxides was investigated as a function of solution pH, solution ionic strength, and redox state. In this study in situ Raman and Fourier transform infrared (FTIR) spectroscopic methods were combined with sorption techniques, electrophoretic mobility measurements, and surface complexation modeling to study the interaction of As (III) and As (V) with amorphous oxide surfaces. The speciation of As (III) and As (V) in aqueous solution was examined using Raman and attenuated total …
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