Pulse cyclic voltammetry. II. Flowing solutions

Abstract

. J. Chem. 65, 1795Chem. 65, (1987.By the use of pulse cyclic chronovoltammetry, better analytical data are sometimes obtained during the reverse scans. This is demonstrated by a chronovoltammetric FIA study of the quinone-hydroquinone couple. A quantitative FIA pulse cyclic chronovoltammetric investigation of the ferri-ferrocyanide reversible couple showed linearity for time-integrated fouriersmoothed data for reductionscan currents as well as the total of the forward and reverse scan peak currents. The detection limit was found to be 2 X M . Chem. 65, 1795Chem. 65, (1987.Lorsqu'on utilise la chronovoltamCtrie cyclique pulsee, on obtient quelquefois de meilleurs donnCes analytiques durant les balayages inverses. On a mis cette propriCtC en tvidence au cours d'une Ctude chronovoltamCtrique FIA du couple quinone/hydroquinone. Une Ctude chronovoltamCtrique cyclique pulsCe FIA quantitative du couple rkversible ferrilferrocyanure prCsente une bonne lintaritt pour les donnCes, intCgrCes en fonction du temps et lissCes par transformation de fourier, relatives aux courants de balayage pour la rkduction ainsi que pour les courants totaux de balayage dans les deux sens. On a trouvt que la limite de dttection est de 2 X M .[Traduit par la revue]

Cyclic Square Wave Voltammetry of Single and Consecutive Reversible Electron Transfer Reactions

“…In this work, we explore a composite waveform for the evaluation and identification of electron transfer mechanisms, i.e., cyclic square wave voltammetry. , This waveform utilizes a square wave which steps through the region of the formal potential of the electroactive species under study in two directions. Although there is strong literature precedent for cyclic pulse techniques, − only a few reports on CSWV have appeared. ,,,− We believe the use of this waveform merits consideration for several reasons. First, the utilization of the square wave potential waveform and the discrete current sampling regimen will permit mechanistic evaluations at trace levels.…”

“…9,10 This waveform utilizes a square wave which steps through the region of the formal potential of the electroactive species under study in two directions. Although there is strong literature precedent for cyclic pulse techniques, [11][12][13][14][15][16][17] only a few reports on CSWV have appeared. 9,10,16,[18][19][20][21][22][23][24][25][26][27][28] the use of this waveform merits consideration for several reasons.…”