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. Author manuscript; available in PMC: 2020 Apr 22.
Published in final edited form as: Anal Chem. 2019 Sep 26;91(20):12917–12927. doi: 10.1021/acs.analchem.9b02904

Figure 3.

Figure 3.

PEDOT/CNT-functionalized CFEs are selective for resting DA via SWV. (a) Average (n = 5, SEM omitted for clarity) in vitro SWV DA calibrations conducted at PEDOT/CNT-functionalized CFEs in the presence of a cocktail of common neurochemical interferences consisting of 200 μM AA, 10 μM UA, and 10 μM DOPAC (pH adjusted to 7.4) reveal clear DA peaks at 0.18 V. (b) The second-order polynomial fit (dashed) was capable of modeling the baseline SWV response resulting from the interferences within the potential region of interest both in the presence (250 nM DA, green) and absence (blue) of DA. (c) Average DA sensitivity in the presence of interferences is linearly correlated. Incorporation of interfering agents does not produce a significant difference (one-way ANOVA, p > 0.05, compared to Figure 2f, blue) in average DA sensitivity using SWV.