Abstract Commercial resin microbeads are widely applied in ion exchange and extraction. Here, a single anion-selective phosphate binding microbead (FerrIX™) is mounted into an epoxy membrane investigated by 4-electrode voltammetry impedance spectroscopy. Anion transport properties observed to dominate associated with three distinct potential domains: (I) low bias ohmic domain (dominant at high ...

Low-cost electrochemical platform for sensitive Pb(II) and Cd(II) detection in aqueous solution were fabricated using pencil graphite leads. Cyclic voltammetry (CV) impedance spectroscopy (EIS) applied to characterization of the Pencil Graphite Electrode (PGE). Average electroactive surface was determined as 2.58 times its geometrical area. Parameters lead cadmium ions optimized Anodic Strippin...

A series of 2,2’-biindole-based inherently chiral electroactive monomers are comparatively investigated with their 3,3’ analogues as an excellent study case two equivalent redox centres interacting through a torsional barrier. The twin peak potential splitting observed in voltammetry for the first oxidation biheteroaromatic core accounts energy barrier height: lower barrier, larger splitting, m...