Mg(II) Selective PVC Membrane Electrode Based on Methyl Phenyl Semicarbazone as an Ionophore

Figure 6

Potentiometric titration curve of Mg²⁺ ion (1.0×10⁻³ M, 20.0 mL) with EDTA (1.25×10⁻³ M), using the proposed sensor as an indicator electrode.