FIGURE 14.11. Coulometric efficiencies for a data set obtained with a beveled 33 μm electrode (♦) compared to data obtained with a 5 μm electrode (▪) for release of catechol measured from a range of vesicle sizes.

FIGURE 14.11

Coulometric efficiencies for a data set obtained with a beveled 33 μm electrode (♦) compared to data obtained with a 5 μm electrode ([filled square]) for release of catechol measured from a range of vesicle sizes. This is compared to the theoretical coulometric efficiencies for these electrode dimensions calculated with the conditions outlined in Figure 14.6 and with the model discussed in the text (dashed lines). These are compared to each set of experimental data, which are shown with best-fit equations (thick lines). The equations for all lines, and their correlation coefficients, are given with the symbols y exp for experimental data sets and y m for the modeled efficiencies, with that for the 5 μm electrode to the left, and that for the 33 μm electrode to the right. (Reproduced from Cans, A. S., Wittenberg, N., Eves, D., Karlsson, R., Karlsson, A., Orwar, O., Ewing, A., Anal. Chem., 75 (16), 4168–4175, 2003. With permission.)

From: Chapter 14, Electrochemistry at the Cell Membrane/Solution Interface

Cover of Electrochemical Methods for Neuroscience
Electrochemical Methods for Neuroscience.
Michael AC, Borland LM, editors.
Boca Raton (FL): CRC Press; 2007.
Copyright © 2007, Taylor & Francis Group, LLC.

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