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Electrochemically initiated reactions of diphenylamines with sulfide: Application to the voltammetric detection of hydrogen sulfide

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Lawrence, NS, Davis, J, Jiang, L, Jones, TGJ, Davies, SN and Compton, RG (2001) Electrochemically initiated reactions of diphenylamines with sulfide: Application to the voltammetric detection of hydrogen sulfide. ELECTROANALYSIS, 13 (2). pp. 143-148. [Journal article]

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Abstract

The electrochemical behavior of three diphenylamine derivatives in the presence of sulfide and sulfhydryl thiols (RSH) in aqueous solution on a glassy carbon electrode has been investigated. All three are shown to exhibit modified voltammetric profiles upon the addition of low concentrations of sulfide, which may provide alternative routes for the detection of this important analyte. The various strategies within which they can be employed have been identified and a brief comparison of their analytical utility (limit of detection, linear range, selectivity etc.) compiled. The reaction of sulfide with 4,4-diaminodiphenylamine is shown to be particularly promising with a number of options through which sulfide levels could be identified. Evidence for the electrochemical formation of the sulfur heterocycle, thionine, is presented and the potential advantages of such reactions highlighted.

Item Type:Journal article
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
ID Code:14378
Deposited By:Professor James Davis
Deposited On:01 Jul 2010 09:54
Last Modified:18 Aug 2011 11:18

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