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A. Interference study of copper and lead binding to Fe2O3 in the presence of increasing concentrations of Na+ ions. B. Interference study of copper and lead binding to Fe2O3 in the presence of increasing concentrations of K+ ions. C. Interference study of copper and lead binding to Fe2O3 in the presence of increasing concentrations of Mg2+ ions. D. Interference study of copper and lead binding to Fe2O3 in the presence of increasing concentrations of Ca2+ ions.
