Simultaneous determination of cobalt and nickel by spectrophotometric method and artificial neural network

A method for the simultaneous spectrophotometric determination of the cobalt(II) and nickel(II) based on formation of their complexes with pyrolidine and carbon disulfide is proposed. The complexes was extracted with p-xylene. An artificial neural network (ANN) model was used to analyze the mixture spectra. The limit of detection for Co(II) and Ni(II) were 0.005 and 0.006 mug/ml, respectively. This procedure allows the simultaneous determination of the cited ions in alloy and synthetic samples. Good reliability of the determination was proved. (C) 2001 Elsevier Science B.V. All rights reserved.