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Cyclic single drop square wave polarography at spherical electrodes - the reversible case

The influence of electrode sphericity and the results of sweep reversal are examined for square wave voltammetry and the square wave polarography in which an entire polarogram is obtained on a single drop. An expanding sphere treatment obtained by adding a spherical correction to expanding plane t...

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Main Authors: Ramalay, Louis, Tan, Wee Tee
Format: Article
Language:English
English
Published: N R C Research Press 1987
Online Access:http://psasir.upm.edu.my/id/eprint/33741/1/cyclic%20single%20drop%20square%20wave%20polarography.pdf
http://psasir.upm.edu.my/id/eprint/33741/7/ramaley-tan-2011-cyclic-single-drop-square-wave-polarography-at-spherical-electrodes-the-reversible-case.pdf
http://psasir.upm.edu.my/id/eprint/33741/
http://www.nrcresearchpress.com/doi/abs/10.1139/v87-174#.VQZhCvmUdPI
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spelling my.upm.eprints.337412024-08-08T00:31:34Z http://psasir.upm.edu.my/id/eprint/33741/ Cyclic single drop square wave polarography at spherical electrodes - the reversible case Ramalay, Louis Tan, Wee Tee The influence of electrode sphericity and the results of sweep reversal are examined for square wave voltammetry and the square wave polarography in which an entire polarogram is obtained on a single drop. An expanding sphere treatment obtained by adding a spherical correction to expanding plane theory gives the best fit to the experimental data. Amalgam forming reactions fit the simple theory developed to a lesser extent than other reactions, especially on the reverse sweep. The shape of the differential polarogram is not significantly affected by sphericity and the reverse peak potential is approximately equal to the forward peak potential. Small differences in these potentials are due to the distortion of the square wave by the stairstep used for the sweep and the distortion of the polarogram due to drop growth. The ratio of the forward and reverse peak currents depends on the phasing of the square wave and stairstep in all cases and on other parameters for a growing drop. N R C Research Press 1987 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/33741/1/cyclic%20single%20drop%20square%20wave%20polarography.pdf text en http://psasir.upm.edu.my/id/eprint/33741/7/ramaley-tan-2011-cyclic-single-drop-square-wave-polarography-at-spherical-electrodes-the-reversible-case.pdf Ramalay, Louis and Tan, Wee Tee (1987) Cyclic single drop square wave polarography at spherical electrodes - the reversible case. Canadian Journal of Chemistry, 65 (5). pp. 1025-1032. ISSN 0008-4042; ESSN: 1480-3291 http://www.nrcresearchpress.com/doi/abs/10.1139/v87-174#.VQZhCvmUdPI 10.1139/v87-174
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
English
description The influence of electrode sphericity and the results of sweep reversal are examined for square wave voltammetry and the square wave polarography in which an entire polarogram is obtained on a single drop. An expanding sphere treatment obtained by adding a spherical correction to expanding plane theory gives the best fit to the experimental data. Amalgam forming reactions fit the simple theory developed to a lesser extent than other reactions, especially on the reverse sweep. The shape of the differential polarogram is not significantly affected by sphericity and the reverse peak potential is approximately equal to the forward peak potential. Small differences in these potentials are due to the distortion of the square wave by the stairstep used for the sweep and the distortion of the polarogram due to drop growth. The ratio of the forward and reverse peak currents depends on the phasing of the square wave and stairstep in all cases and on other parameters for a growing drop.
format Article
author Ramalay, Louis
Tan, Wee Tee
spellingShingle Ramalay, Louis
Tan, Wee Tee
Cyclic single drop square wave polarography at spherical electrodes - the reversible case
author_facet Ramalay, Louis
Tan, Wee Tee
author_sort Ramalay, Louis
title Cyclic single drop square wave polarography at spherical electrodes - the reversible case
title_short Cyclic single drop square wave polarography at spherical electrodes - the reversible case
title_full Cyclic single drop square wave polarography at spherical electrodes - the reversible case
title_fullStr Cyclic single drop square wave polarography at spherical electrodes - the reversible case
title_full_unstemmed Cyclic single drop square wave polarography at spherical electrodes - the reversible case
title_sort cyclic single drop square wave polarography at spherical electrodes - the reversible case
publisher N R C Research Press
publishDate 1987
url http://psasir.upm.edu.my/id/eprint/33741/1/cyclic%20single%20drop%20square%20wave%20polarography.pdf
http://psasir.upm.edu.my/id/eprint/33741/7/ramaley-tan-2011-cyclic-single-drop-square-wave-polarography-at-spherical-electrodes-the-reversible-case.pdf
http://psasir.upm.edu.my/id/eprint/33741/
http://www.nrcresearchpress.com/doi/abs/10.1139/v87-174#.VQZhCvmUdPI
_version_ 1807051104595214336
score 13.211869

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