Direct Voltammetric Determination of Total Iron with a Gold Microelectrode Ensemble

En este trabajo se habla de una voltamperometría cíclica con un conjunto de microelectrodos de oro para determinar la cantidad de hierro que hay en una muestra debido al comportamiento redox del Fe (II)/(III).

    The behavior of the Fe(II)/(III) redox system at a Au microelectrode ensemble (Au-MEE) based on a solid composite by means of direct and cyclic voltammetric anal. (VA) is reported.  With a simple electrode activation and sample prepn., the influence of dissolved org. substances was eliminated, providing highly sensitive results.  The anal. signal was based on the max. cathodic current (I) of the 1st deriv. (dI/dE), and Fe detn. within the 0.002-0.04 mg L-1 range was studied.  A sensitive LOD (3σ) value of 0.7 μg L-1 for total Fe concn. was calcd.; total Fe detn. in different waters was shown.

   Zakharova, E. A.; Elesova, E. E.; Noskova, G. N.; Lu, M.; Compton, R. G.

 Electroanalysis (2012), 24(11), 2061-2069