The voltammetric determination of peroxynitrite at a mercury film electrode
| Parent link: | New Journal of Chemistry Vol. 31, iss. 3.— 2007.— [P. 394-400] |
|---|---|
| Andre forfattere: | , , , , |
| Summary: | 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 |
| Sprog: | engelsk |
| Udgivet: |
2007
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| Fag: | |
| Online adgang: | http://pubs.rsc.org/en/Content/ArticleLanding/2007/NJ/b615188d#!divAbstract |
| Format: | Electronisk Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=638348 |
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| 200 | 1 | |a The voltammetric determination of peroxynitrite at a mercury film electrode |f E. A. Zakharova [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: p. 400 (33 tit.)] | ||
| 330 | |a 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. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t New Journal of Chemistry | ||
| 463 | |t Vol. 31, iss. 3 |v [P. 394-400] |d 2007 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 701 | 1 | |a Zakharova |b E. A. |c chemist |c senior research fellow at the Tomsk Polytechnic University, candidate of chemical Sciences |f 1938- |g Elsa Arminana |3 (RuTPU)RU\TPU\pers\33332 | |
| 701 | 1 | |a Yurmazova |b T. A. |c chemist |c associate Professor of Tomsk Polytechnic University, candidate of chemical Sciences |f 1950- |g Tatyana Aleksandrovna |3 (RuTPU)RU\TPU\pers\33294 | |
| 701 | 1 | |a Nazaarov |b B. F. | |
| 701 | 1 | |a Wildgoose |b G. G. | |
| 701 | 1 | |a Compton |b R. G. | |
| 801 | 2 | |a RU |b 63413507 |c 20150123 |g RCR | |
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