Electrodeposition of 4-Benzenesulfonic Acid onto a Graphite-Epoxy Composite Electrode for the Enhanced Voltammetric Determination of Caffeine in Beverages

<div>Cyclic voltammograms obtained for each modified electrode in presence of 2 mmol·L<sup>−1</sup> of caffeine, in 0.04 mol·L<sup>−1</sup> BRB pH 2.0. Cyclic voltammetry parameters: scan rate 100 mV·s<sup>−1</sup>; potential step of 10 mV. The arrow shows the scan direction.</div>

Journal of Analytical Methods in Chemistry

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Figure 2

Figure 2: Electrodeposition of 4-Benzenesulfonic Acid onto a Graphite-Epoxy Composite Electrode for the Enhanced Voltammetric Determination of Caffeine in Beverages 

Figure 2 | Electrodeposition of 4-Benzenesulfonic Acid onto a Graphite-Epoxy Composite Electrode for the Enhanced Voltammetric Determination of Caffeine in Beverages 