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Influence of pencil lead hardness on voltammetric response of graphite reinforcement carbon electrodes

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Abstract

This work studied the voltammetric response of graphite reinforcement electrodes made of different pencil lead hardness. The studies showed that harder graphite leads, regardless of their manufacturer, are more appropriate as electrode material for voltammetric purposes due to their higher peak currents, increasing sensitivity and reproducibility, with ΔEp closer to the theoretical value for a reversible system.

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Acknowledgements

The authors are grateful to FAPEMIG and CNPq for financial support.

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Authors and Affiliations

  1. Departamento de Química, ICEx, UFMG, Av. Antônio Carlos 6627, 31270-901, Belo Horizonte, MG, Brazil

    Paulo Henrique Campos Prado Tavares & Paulo Jorge Sanches Barbeira

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  1. Paulo Henrique Campos Prado Tavares
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  2. Paulo Jorge Sanches Barbeira
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Correspondence to Paulo Jorge Sanches Barbeira.

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Tavares, P.H.C.P., Barbeira, P.J.S. Influence of pencil lead hardness on voltammetric response of graphite reinforcement carbon electrodes. J Appl Electrochem 38, 827–832 (2008). https://doi.org/10.1007/s10800-008-9518-2

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  • DOI: https://doi.org/10.1007/s10800-008-9518-2

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