Cyclic Voltammetry of Neptunium in Different Media

[image omitted]  can be determined simultancously with Np4+ at the glassy carbon electrode in HClO4 and HNO3 solutions, because there is only one monoelectronic change transfer for [image omitted] . In acetate buffer medium and in sulfuric acid the determination of [image omitted]  possible at the glassy carbon electrode, but in presence of Np4+ we found out an interaction between [image omitted]  and Np4+. Considering this effect the determination of [image omitted]  is possible.