Data processing for amperometric signals

Abstract

Multicomponent analysis with arrays of individually modified electrodes is under investigation. This paper is concerned with a preliminary study of data processing of the singals of such an array. Voltammetric measurements of solution mixtures consisting of two nitrophenols were made with two disc electrodes (gold and rhodium, diameter 2.8 mm) in well stirred solutions. Linear scan voltammograms were used to test a data reduction and filtering method, and two multivariate calibration techniques, i.e., a linear and a non-linear model, were evaluated. The non-linear model gave better results, indicating that non-linear effects occur with amperometric measurements of multicomponent solutions.