X-ray Photoelectron Studies of Anion Adsorption on Goethite1
- Ronald R. Martin and
- Roger St. C. Smart2
X-ray photoelectron spectroscopy (XPS) was evaluated as a technique to study anion adsorption on soil minerals; in this case, the well-characterized systems of phosphate, sulfate, and selenite adsorption on goethite (α-FeOOH). X-ray photoelectron spectroscopy measured directly the surface coverage, the form of the adsorbed species and substrate, and the pH dependence of adsorption. The results confirm the previously reported adsorption mode in which two A-type hydroxyls are replaced by coordination of two of the oxygen atoms of the anion.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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