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. Author manuscript; available in PMC: 2017 Mar 1.
Published in final edited form as: Microchem J. 2016 Mar 1;125:97–104. doi: 10.1016/j.microc.2015.10.028

Fig. 7.

Fig. 7

A. Interference study of copper and lead binding to Fe3O4 in the presence of increasing concentrations of Na+, K+, Mg2+, and Ca2+. B. Interference study of copper and lead binding to Fe2O3 in the presence of increasing concentrations of Na+, K+, Mg2+, and Ca2+.