Hilbert transform of voltammetric data

Arundell, M., Patel, B.A., Yeoman, Mark, Parker, K.H. and O'Hare, D. (2004) Hilbert transform of voltammetric data Electrochemistry Communications, 6 (4). pp. 366-372. ISSN 1388-2481

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The use of the fast Fourier transform (FFT) assumes stationarity and, in many applications, linearity; assumptions that are often invalid in the analysis of voltammetric data. Empirical mode decomposition followed by the Hilbert transform offers an alternative mode of analysis that can overcome these difficulties. The validity of the Hilbert transform for the analysis of non-linear signals merits application to electrochemistry which, to our knowledge, has not been carried out before. Preliminary results, for three well-characterised redox processes: (i) a thermodynamically reversible electron transfer; (ii) formation of a passivating layer; (iii) growth of an oxide layer on an electrode surface, suggest that it can provide useful and novel insights into electrochemical processes. A less well-characterised process, the adsorption of 5-hydroxytryptamine (5-HT) oxidation products on the surface of a glassy carbon electrode, is also investigated using the Hilbert transform.

Item Type: Journal article
Uncontrolled Keywords: Hilbert transform; Sinusoidal perturbations; 5-Hydroxytryptamine (5-HT); Non-linear; Non-stationary; Instantaneous frequency
Subjects: F000 Physical Sciences > F100 Chemistry
DOI (a stable link to the resource): 10.1016/j.elecom.2004.02.003
Faculties: Faculty of Science and Engineering > School of Pharmacy and Biomolecular Sciences
Depositing User: editor spbs
Date Deposited: 01 Dec 2006
Last Modified: 01 Apr 2015 11:13
URI: http://eprints.brighton.ac.uk/id/eprint/1050

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