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Cyclic Voltammetric Investigation of Iron In Ore at 1,10-Phenanthroline Modified Carbon Paste Electroactive Electrode

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Author Affiliations

  • 1Ecole Supérieure Polytechnique, Université Cheikh Anta Diop, BP : 5085 Dakar-fann, Senegal
  • 2Ecole Supérieure Polytechnique, Université Cheikh Anta Diop, BP : 5085 Dakar-fann, Senegal
  • 3Département de chimie, faculté des Sciences et Techniques, Université Cheikh Anta Diop, Dakar, Senegal
  • 4Ecole Supérieure Polytechnique, Université Cheikh Anta Diop, BP : 5085 Dakar-fann, Senegal
  • 5Ecole Supérieure Polytechnique, Université Cheikh Anta Diop, BP : 5085 Dakar-fann, Senegal
  • 6Ecole Supérieure Polytechnique, Université Cheikh Anta Diop, BP : 5085 Dakar-fann, Senegal

Res.J.chem.sci., Volume 6, Issue (10), Pages 41-47, October,18 (2016)

Abstract

An electrochemical method based on cyclic voltammetry (CV) and employing a 1,10-phenanthroline (phen) modified carbon paste electroactive electrode (OMCPEE) has been proposed for the determinationof iron on solid substratum. The OMCPEE was calibrated with standard iron sulfate FeSO4 in 2 M HCl as a supporting electrolyte. Under optimized conditions, the proposed method has shown acceptable analytical performances. Two couples of well-defined redox peaks, which are corresponded to the oxidation of iron(II) and ferroin complex are recorded. The scan rate effect suggested thatthe electrode reaction corresponds to anadsorption-controlled process. Using the proposed method, iron was successfully determined in ore samples, suggesting that this method can be applied to the determination of iron in geological matrices.

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