6) Pulse Voltammetry a) Instead of linear change in E appl with time use step changes (pulses in E appl ) with time b) Measure two currents at each cy
{"Image DocumentName": "b) Measure two currents at each cycle", "Image ImageDescription": "6) Pulse Voltammetry. a) Instead of linear change in Eappl with time use step changes (pulses in Eappl) with time. b) Measure two currents at each cycle. - S1 before pulse & S2 at end of pulse. - plot Di vs. E (Di = ES2 \u2013 ES1) - peak height ~ concentration. - for reversible reaction, peak potential -> standard potential for \u00bd reaction. c) differential-pulse voltammetry. d) Advantages: - can detect peak maxima differing by as little as 0.04 \u2013 0.05 V. < 0.2V peak separation for normal voltammetry. - decrease limits of detection by x compared to normal voltammetry. < 10-7 to 10-8 M. E0. concentration.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}