Figure 1

Cyclic voltammograms of: (a) MAP (1.0 mM), (b) MAP (1.0 mM) + BS (1.0 mM) and (c) BS (1.0 mM) in aqueous phosphate buffer (c = 0.2 M, pH = 2.0). Working electrode: glassy carbon electrode. Scan rate 100 mV s−1. Temperature = 25 ± 1 °C.

Cyclic voltammograms of: (a) MAP (1.0 mM), (b) MAP (1.0 mM) + BS (1.0 mM) and (c) BS (1.0 mM) in aqueous phosphate buffer (c = 0.2 M, pH = 2.0). Working electrode: glassy carbon electrode. Scan rate 100 mV s−1. Temperature = 25 ± 1 °C.