Simultaneous spectrophotometric determination of metal ions with 4-(pyridyl-2-azo)resorcinol (PAR)

E. Gómez, J. M. Estela, V. Cerdà, M. Blanco

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Abstract

A new method for the simultaneous determination of the divalent ions of cadmium, cobalt, copper, lead, manganese, nickel and zinc in binary, ternary and quaternary mixtures based on the application of a multiple linear regression programme to the spectra of the complexes of these ions with 4-(pyridyl-2-azo)resorcinol (PAR) was developed. The detection limits afforded by the proposed method range from 0.02 μg/ml for Co(II), Mn(II), Ni(II) and Zn(II) to 0.10 μg/ml for Pb(II). The method is rapid and quite simple as it entails no prior separation, and was successfully applied to the analysis for the above-mentioned ions in synthetic samples and real alloys. © 1992 Springer-Verlag.
Original languageEnglish
Pages (from-to)318-321
JournalFresenius Journal of Analytical Chemistry
Volume342
Issue number4-5
DOIs
Publication statusPublished - 1 Apr 1992

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