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Voltammetric Determination of Nitronaphthalenes at a Silver Solid Amalgam Electrode
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SYSNO ASEP 0330470 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Voltammetric Determination of Nitronaphthalenes at a Silver Solid Amalgam Electrode Title Voltametrické stanovení nitronaftalenů na stříbrné pevné analgámové elektrodě Author(s) Pecková, K. (CZ)
Barek, J. (CZ)
Navrátil, Tomáš (UFCH-W) RID, ORCID
Josypčuk, Bohdan (UFCH-W) RID, SAI, ORCID
Zima, J. (CZ)Source Title Analytical Letters. - : Taylor & Francis - ISSN 0003-2719
Roč. 42, č. 15 (2009), s. 2339-2363Number of pages 25 s. Language eng - English Country US - United States Keywords cyclic voltammetry ; differential pulse voltammetry ; elimination voltammetry with linear scan ; silver amalgam electrode Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects GA203/07/1195 GA ČR - Czech Science Foundation (CSF) IAA400400806 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) LC06035 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000270544700001 DOI 10.1080/00032710903142442 Annotation Electrodes based on amalgam materials were re-introduced in electroanalytical chemistry in the year 2000, partially as reaction to unsubstantiated public fears of liquid mercury. In this publication, the voltammetric behavior of 1-nitronaphthalene and 2-nitronaphthalene was investigated at a mercury meniscus-modified silver solid amalgam electrode. The reduction mechanism in mixed neutral buffer-methanol medium includes the four-electron reduction to hydroxylaminoderivative followed by a two-electron reduction to the amine in acidic medium, similarly to mercury electrodes. In alkaline media, both compounds show the splitting of the main four-electron reduction peak typical for mercury electrodes in two new ones, the first one corresponding to a one electron reduction of the nitroderivative to the nitro radical anion, which was confirmed by microcoulometry. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2010
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