The voltammetric determination of peroxynitrite at a mercury film electrode; New Journal of Chemistry; Vol. 31, iss. 3

The voltammetric determination of peroxynitrite at a mercury film electrode; New Journal of Chemistry; Vol. 31, iss. 3

Detalhes bibliográficos
Parent link:New Journal of Chemistry
Vol. 31, iss. 3.— 2007.— [P. 394-400]
Outros Autores: Zakharova E. A. Elsa Arminana, Yurmazova T. A. Tatyana Aleksandrovna, Nazaarov B. F., Wildgoose G. G., Compton R. G.
Resumo:Title screen
This report describes the direct voltammetric detection of peroxynitrite (PN, ONOO-), an important analyte in many physiological biochemical pathways, at a mercury film electrode (MFE) at alkaline pH. The voltammetric response of PN is observed as a cathodic inverted peak when the potential is swept in the oxidative direction at ca. -0.1 V vs. a Ag/AgCl/1 M KCl reference electrode. An Image ID:b615188d-t2.gif mechanism is proposed to explain this behaviour involving the initial formation of a thin film of Hg(I) oxide on the electrode which is then oxidised by PN to form HgO in a chemical step. The HgO is then reduced back to Hg(0) at the electrode potential of interest resulting in a net cathodic current. The parameters affecting the voltammetry of PN at a MFE, including the concentration of PN (10-5–10-4 M), the effect of varying scan rate (5–100 mV s-1) and pH are investigated and the kinetics of PN decay in alkaline solutions ranging from pH 9–13 are explored electrochemically.
Режим доступа: по договору с организацией-держателем ресурса
Idioma:inglês
Publicado em: 2007
Assuntos:
электронный ресурс
труды учёных ТПУ
Acesso em linha:http://pubs.rsc.org/en/Content/ArticleLanding/2007/NJ/b615188d#!divAbstract
Formato: Recurso Electrónico Capítulo de Livro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=638348

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