Direct Voltammetric Determination of Total Iron with a Gold Microelectrode Ensemble | Zendy

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

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Direct Voltammetric Determination of Total Iron with a Gold Microelectrode Ensemble

Author(s) -

Zakharova E. A.,

Elesova E. E.,

Noskova G. N.,

Lu M.,

Compton R. G.

Publication year - 2012

Publication title -

electroanalysis

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.574

H-Index - 128

eISSN - 1521-4109

pISSN - 1040-0397

DOI - 10.1002/elan.201200417

Subject(s) - microelectrode , redox , chemistry , cathodic protection , electrochemistry , analytical chemistry (journal) , electrode , voltammetry , derivative (finance) , inorganic chemistry , chromatography , financial economics , economics

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 analysis (VA) is reported. With a simple electrode activation and sample preparation, the influence of dissolved organic substances was eliminated, providing highly sensitive results. The analytical signal was based on the maximum cathodic current ( I ) of the first derivative (d I /d E ), and iron determination within the 0.002–0.04 mg L −1 range was studied. A sensitive LOD (3 σ ) value of 0.7 µg L −1 for total iron concentration was calculated; total iron determination in different waters was shown.

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