Determination of copper by electrothermal AAS after electrodeposition on a graphite disk electrode.

The electrodeposition of copper on a graphite electrode at a constant potential with subsequent atomization in the graphite atomizer HGA-400 has been studied. A special graphite disk electrode is suitable for electrochemical enrichment at E = -0.7 V vs.

Preparation of an iodide ion-selective electrode by chemical treatment of a silver wire.

The preparation and application of an iodide ion-selective electrode, prepared by chemical treatment of a silver wire with Hg(2+) is described. The electrode is suitable for the direct potentiometric measurement of iodide in aqueous solutions with concentrations down to 1 x 10(-6) mol/L. It can be used for potentiometric measurements of various compounds (vitamin C, glutathione).

Electrochemical analysis of cephalosporin antibiotics.

A review is presented on electroanalysis studies and methods for the determination of cephalosporin antibiotics in either simple solutions or biological fluids. Some general data about the electroactivity of cephalosporins are given and the analytical utilization of those data together with the corresponding analytical parameters, compiled from different literature sources.