ANALYTICAL POSSIBILITIES OF MICROELECTRODE USE FOR STRIPPING VOLTAMMETRY

The analytical utility of microelectrodes for stripping voltammetry is discussed from several points of view. The application of microelectr odes for microanalysis is demonstrated using a novel capillary flow in jection system. Heavy metals at mug l-1 concentrations have been deter mined in mul-samples. The influence of electrode size and convection d uring the deposition period of anodic stripping voltammetry on the rep roducibility of trace metal determination was studied for various type s of electrodes. In the case of mercury film microelectrodes, the prec ision can be improved if the accumulation of the analyte is performed under quiescent conditions. Practical examples of stripping voltammetr y with microelectrodes such as copper determination in whisky and trac e metal measurements in drinking water are given.