Figure 1.

K representations of a proper and a questionable training set. (A) Dopamine cyclic voltammograms of the proper training set. (B) pH change cyclic voltammograms of the proper training set. (C) k_DA for the proper training set shown in (A) and (B). (D) k_pH for the proper training set shown in (A) and (B). (E) Dopamine cyclic voltammograms of the questionable training set. (F) pH change cyclic voltammograms of the questionable training set. (G) k_DA for the questionable training set shown in (E) and (F). (H) k_pH for the questionable training set shown in (E) and (F). (I) and (J) show the recalculated k_DA and k_pH vectors, respectively, for the questionable training set shown in (E) and (F) if the QH-peak is used for pH change quantitation rather than the C-peak. The arrows in (A), (B), (C), (D), (G), and (H) indicate the direction of the voltammetric sweep.