Potentiometric detection of thiols: a mechanistic evaluation of quinone-thiol interactions

A Digga; S Gracheva; C Livingstone; J Davis

doi:10.1016/S1388-2481(03)00172-3

Potentiometric detection of thiols: a mechanistic evaluation of quinone-thiol interactions

A Digga, S Gracheva, C Livingstone, J Davis

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

The potentiometric response resulting from the sequential addition of reduced thiols to a benzoquinone/hydroquinone couple has been investigated. The system has been shown to offer a simple route through which thiol could be quantified but a discrepancy in the reaction stoichiometry between glutathione and cysteine was observed. A mechanistic appraisal of the quinone-thiol interactions has been conducted and the proposed reaction pathways corroborated by spectroscopic analysis. (C) 2003 Published by Elsevier B.V.

Original language	English
Pages (from-to)	732-736
Journal	Electrochemistry Communications
Volume	5
Issue number	8
DOIs	https://doi.org/10.1016/S1388-2481(03)00172-3
Publication status	Published (in print/issue) - Aug 2003

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10.1016/S1388-2481(03)00172-3

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title = "Potentiometric detection of thiols: a mechanistic evaluation of quinone-thiol interactions",

abstract = "The potentiometric response resulting from the sequential addition of reduced thiols to a benzoquinone/hydroquinone couple has been investigated. The system has been shown to offer a simple route through which thiol could be quantified but a discrepancy in the reaction stoichiometry between glutathione and cysteine was observed. A mechanistic appraisal of the quinone-thiol interactions has been conducted and the proposed reaction pathways corroborated by spectroscopic analysis. (C) 2003 Published by Elsevier B.V.",

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AU - Digga, A

AU - Gracheva, S

AU - Livingstone, C

AU - Davis, J

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N2 - The potentiometric response resulting from the sequential addition of reduced thiols to a benzoquinone/hydroquinone couple has been investigated. The system has been shown to offer a simple route through which thiol could be quantified but a discrepancy in the reaction stoichiometry between glutathione and cysteine was observed. A mechanistic appraisal of the quinone-thiol interactions has been conducted and the proposed reaction pathways corroborated by spectroscopic analysis. (C) 2003 Published by Elsevier B.V.

AB - The potentiometric response resulting from the sequential addition of reduced thiols to a benzoquinone/hydroquinone couple has been investigated. The system has been shown to offer a simple route through which thiol could be quantified but a discrepancy in the reaction stoichiometry between glutathione and cysteine was observed. A mechanistic appraisal of the quinone-thiol interactions has been conducted and the proposed reaction pathways corroborated by spectroscopic analysis. (C) 2003 Published by Elsevier B.V.

U2 - 10.1016/S1388-2481(03)00172-3

DO - 10.1016/S1388-2481(03)00172-3

M3 - Article

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VL - 5

SP - 732

EP - 736

JO - Electrochemistry Communications

JF - Electrochemistry Communications

IS - 8

ER -

Potentiometric detection of thiols: a mechanistic evaluation of quinone-thiol interactions

Abstract

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