Voltammetric Mechanism of Multiion Detection with Thin Ionophore-Based Polymeric Membrane.

ABSTRACT: The capability to detect multianalyte ions in their mixed solution is an important advantage of voltammetry with an ionophore-based polymeric membrane against the potentiometric and optical counterparts. This advanced capability is highly attractive for the analysis of physiological ions at millimolar concentrations in biological and biomedical samples. Herein, we report on the comprehensive response mechanisms based on the voltammetric exchange and transfer of millimolar multiions at a thin polymeric membrane, where an ionophore is exhaustively depleted upon the transfer of the most favorable primary ion, I(zI). With a new voltammetric ion-exchange mechanism, the primary ion is exchanged with the secondary favorable ion, J(zJ), at more extreme potentials to transfer a net charge of |zJ|/n

SUBMITTER: Greenawalt PJ 

PROVIDER: S-EPMC5029862 | biostudies-literature | 2016 Jun

REPOSITORIES: biostudies-literature