Anodic Stripping Differential Alternative Pulses Voltammetry and Applications

摘要

A modification of the voltammetric technique Differential Alternative Pulses Voltammetry (DAPV) reported by the authors earlier (1) is presented. The potential-time waveform and the signal processing algorithm were properly modified allowing the performance of the DAPV in anodic stripping mode (ASDAPV). These improvements allow its application for trace species determinations in multicomponent solutions without preliminary extraction and separations procedures. Examples of the application of ASDAPV for direct simultaneous determinations of couples of ions having small E_(1/2) difference as well as for simultaneous multicomponent determinations are presented and discussed.