Reduction of metal oxides by carbon in graphite furnaces. Part 1. Temporal oscillations of atomic absorption in the process of slow evaporation of Al, Bi, Cr, In, Mg, Mn, Pb, Sb, Sn and Te oxides

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DOI	Trouver le DOI : https://doi.org/10.1039/a901850f
Auteur	Rechercher : L'vov, B. V.; Rechercher : Vasilevich, A. A.; Rechercher : Dyakov, A. O.; Rechercher : Lam, J.; Rechercher : Sturgeon, R.
Format	Texte, Article
Résumé	Temporal oscillations in the kinetics of carbothermal reduction of oxides of 10 elements (Al, Bi, Cr, In, Mg, Mn, Pb, Sb, Sn and Te) have been observed by electrothermal atomic absorption spectrometry. Microgram amounts of the elements, as their nitrates, were evaporated with slow heating of the graphite tube. With the exception of Al, Cr and Mn, these oscillations were observed for the first time. Some of the features of this phenomenon are described, including the effects of sample mass, acidity of the solution, nature of the graphite substrate, the influence of the presence of Sr and the type of sheathing gas (He and Ar) on the characteristics of Al spikes. Similar results were obtained in two different laboratories.
Date de publication	1999
Dans	Journal of Analytical Atomic Spectrometry 14, nº 7 (1999) : 1019–1024.
Langue	anglais
Numéro du CNRC	NRC-INMS-180
Numéro NPARC	8898265
Exporter la notice	Exporter en format RIS
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Identificateur de l’enregistrement	68689467-6a93-47d8-af49-02405eebce14
Enregistrement créé	2009-04-22
Enregistrement modifié	2020-03-20

Date de modification :: 2024-07-07