La polarographie a decharges

Charge-step polarography. Comment

“…(Leipzig), 243, 345 (1970). degree of coverage, , which we calculated by means of the nonlinear diffusion equations, agreed with the value of determined with the aid of the extrapolated transfer current (9). On the basis of the model which we used, Lukovtsev et al ( 14) determined the average size of the active sites for a system very similar to the one used by Guidelli and Piccardi (/), i.e.…”

“…The new method "polarographie a décharges" has been since continuously improved theoretically and experimentally. Two papers have been published (9,10), dealing with theoreti-electrode reactions. Another method called "polarographie á décharges a polarisation variable" has been created and studied theoretically (77) and experimentally (12,13).…”

On the form of the single coulostatic decay curve

“…The more recent work on analytical applications has emphasized the incorporation of a series of coulostatic pulses which produce signals mimicking many of the wellknown voltammetric methods [3][4][5][6][7][8][9][10][11][12][13] but the analysis of the potential-time curve after injection of a single coulostatic pulse remains a valuable experiment [14]. The more recent work on analytical applications has emphasized the incorporation of a series of coulostatic pulses which produce signals mimicking many of the wellknown voltammetric methods [3][4][5][6][7][8][9][10][11][12][13] but the analysis of the potential-time curve after injection of a single coulostatic pulse remains a valuable experiment [14].…”

“…Theoretical treatments of the single coulostatic decay curve for a reversible electrode reaction have long been available [4,15] but they are not in a form that is subject to simple calculation. An appealing and apparently novel treatment of a single coulostatic decay curve was suggested and implemented by Reiss and Nieman [14] who plotted the derivative of the potential with respect to the square root of time versus the potential and obtained curves resembling classical polarograms.…”

Quantitative and qualitative information from single coulostatic decay curves

“…If the initial slope of the decay is plotted vs. the initial potential (i.e., plot / 1/2 vs. E), then a curve is obtained which resembles a normal voltammogram, and for this data set yields EX/2 values of approximately -0.43 V and -0.63 V. This method of obtaining a voltammogram by using coulostatics has been previously described (5, 13,15,16).…”