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. Author manuscript; available in PMC: 2016 Sep 21.
Published in final edited form as: Anal Chem. 2016 Aug 23;88(17):8893–8901. doi: 10.1021/acs.analchem.6b02551

Figure 6.

Figure 6

Thin-layer CVs of oNPOE/PVC membranes doped with 5 mM ionophore 3 in solutions of (A) 5 mM lithium acetate and (B) 5 mM magnesium acetate. The potential is defined against the formal potential of lithium ion. Potential sweep rate, 0.1 V/s. Black dashed lines represent average peak potentials. The red dashed line represents the potential of the thermodynamically shifted forward peak based on voltammetric Li+–Mg2+ exchange in mixed solutions of 5 mM acetate salts of lithium and magnesium ions.