ABSTRACT

for 1 hr. Cyclic voltammetry was performed in the two-electrode mode using an SSCE reference electrode for all measurements. A scan rate of 300 V/s was employed using a triangular wave form that was ramped between −0.5 and +1.0 V. (A) Average current within a 60-mV window of the peak oxidation potential of DA. Individual current spikes represent faradaic current. (B) Enlargement of the region between scans 1010 and 1225 showing multiple current transients used to generate voltammograms. (C) Background-subtracted voltammogram generated by subtracting the average signal of scans 1020-1023 from the signal of scans 1025-1026. (D) Background-subtracted voltammogram of a standard 25 µM DA solution. (Reproduced from Anal. Chem. with permission [13].)