Über die Bestimmung von Sauerstoff, Stickstoff und Wasserstoff in Oxiden und Hartstoffen durch Hochtemperatur-Vakuumentgasung

Autor:	K. Müller, R. Kieffer, G. Paesold
Rok vydání:	1967
Předmět:	Periodic system Hydrogen Clinical Biochemistry Inorganic chemistry chemistry.chemical_element General Medicine Nitride Oxygen Evaporation (deposition) Nitrogen Analytical Chemistry chemistry General Materials Science Graphite
Zdroj:	Fresenius' Zeitschrift für analytische Chemie. 232:31-40
ISSN:	0016-1152
DOI:	10.1007/bf00528799
Popis:	A new method for high-temperature vacuum-degassing has been described and applied to the determination of very small quantities of hydrogen, oxygen and nitrogen in refractory materials as well as large amounts of these elements in hydrides, oxides and nitrides. A closed graphite capsule is used to prevent the loss of oxygen (as CO2) and the evaporation of low-melting oxides. In the analysis of highly refractory oxides addition of Si or Si alloys is required. The analysis of nitrides and hydrides does not cause any difficulties if the degassing temperature is high enough. Yet, difficulties arise with the very stable nitrides of the metals of the IVa and Va groups of the periodic system. Several samples are analyzed according to the method described and to standard techniques and the results are compared.
Databáze:	OpenAIRE
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