A Simplified Method to Determine lsoelectric Points of Oxides

A simple way to determine the IEP of oxide minerals is described. The method is shown to apply for fine powders of Fe20 3 and ZnO. The IEP lies at pH 6.95 for Fe203 and at pH 9.08 for ZnO.
Keywords: Adsorption, Charge density, electrolyte, isoelectric point, J. Phys, surface charge, ZnO., Electrolytes, mineral, minerals, Oxide, pH, Strength, Value
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