Abstract

QUIROS, Miriam B.  and  WU, Biyun Z.. Development and Validation of an Adsorptive Method for Aluminium Determination in Fluids Used in Renal Dialysis. Port. Electrochim. Acta [online]. 2005, vol.23, n.1, pp.165-178. ISSN 0872-1904.

It was developed and validated an analytical methodology able to quantify aluminium in haemodialysis fluids, based on the reaction of aluminium with cupferrron (ammonium salt of N-nitroso phenyl hydroxyl amina), on the adsorption of the complex on a hanging drop mercury electrode, and on the measurement of the reduction current of the complex.  Parameter validation was done using square wave voltammetry for accumulation potential, time of accumulation, frequency, pulse amplitude, equilibrium time, cupferron concentration, optimum pH. Performance parameters of the method were established: detection limit, quantification limit, reliability, lineal interval for the calibration curves. The method was applied to haemodialysis mineralized fluids, being done the quantification of the aluminium presented.

Keywords : fluids; renal dialysis; quantitative analysis; aluminium; adsorptive voltammetry; square wave; cupferron.

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