Impurity determination by thermal analysis

Autor:	W.M. Smit, H.F. Van Wijk
Rok vydání:	1961
Předmět:	Chemistry Sample (material) Analytical chemistry Thermodynamics Biochemistry Melting curve analysis Analytical Chemistry Superheating Homogeneous Impurity Environmental Chemistry Binary system Thermal analysis Spectroscopy Solid solution
Zdroj:	Analytica Chimica Acta. 24:41-45
ISSN:	0003-2670
DOI:	10.1016/0003-2670(61)80010-x
Popis:	A temperature-heat content relation is derived for a homogeneous solid solution of a binary system showing a very restricted rate of diffusion in the solid. It is shown experimentally that quickly frozen samples behave like homogeneous solid solutions. According to the new theory the depressions determined on partly molten samples are usually small and depend on the conditions; thus purity determinations based on heating curves of quickly frozen samples are of dubious value. The theory shows that superheating of the solid may occur when a solid solution is melted; this is confirmed expermentally.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d3bf0f86e9da1db53024f842efdb6cb https://doi.org/10.1016/0003-2670(61)80010-x Zobrazit plný text záznamu