Rietveld refinement Rietveld analysis 8 goethite 8 X ray diffraction 6 X-ray diffraction 6 Acid dissolution 4 Hyperfine characterization 4 Mossbauer spectroscopy 4 Mössbauer spectroscopy 4 Nickel compounds 4 Scanning electron microscopy 4 Ssbauer spectroscopies 4 cobalt 4 dissolution 4 hematite 4 phase transition 4 Adsorption 2 Al- 2 Alkalinity 2 Aluminum 2 Ambient pressures 2 Anisotropic broadening 2 Anti-Bacterial Agents 2 Antibiotic 2 Antibiotics 2 Atomic emission spectroscopy 2 BET surface area measurement 2 Catalysis 2 Cationic redistribution 2 Chemical analysis 2