anchor points were selected. The software automatically placed anchor points on the voltammogram, and minor adjustments were made to ensure that each anchor point was positioned before and after the regions of interest. Once the anchor points were in the correct position, the interpolation method "Spline" was selected to create a smooth curve fitting the shape of the voltammograms. The "Finish" button was then selected on the peak analyser (Figure ). The background-subtracted voltammogram was plotted, and the "Quick Peaks" option was selected from the "Gadgets" section.