Journal ArticleDOI
Principles and Applications of Substoichiometric Techniques of Analysis
Reads0
Chats0
TLDR
In this article, the substoichiometric principle was applied to radioisotope dilution analysis for trace element activation analysis, where the specific activities of the extracts or precipitates are made proportional to the total activities, and the determination of the absolute chemical yield of the separation is rendered unnecessary.Abstract:
SUMMARY One of the major difficulties associated with the chemical separation usually required in activation analysis for trace elements has been the need to determine the chemical yield of the separation process. In a separation using the substoichiometric principle, equal amounts of a reagent capable of converting the irradiated element and its isotopic carrier to an easily-separable form are added to the prepared sample and to the standard, but the reagent is sufficient to react with only a part of the element and carrier which is present. By this means the specific activities of the extracts or precipitates are made proportional to the total activities, and the determination of the absolute chemical yield of the separation is rendered unnecessary. Furthermore, the use of a substoichiometric amount of reagent usually increases the selectivity of the separation process. The principle can be applied with equal, or even greater, advantage to radioisotope dilution analysis, and its use has greatly extended...read more
References
More filters
Journal ArticleDOI
Substoichiometric determination of manganese by neutron-activation analysis
TL;DR: A simple and rapid method for the substoichiometric determination of traces of manganese in various materials by neutron-activation analysis has been developed.
Journal ArticleDOI
A rapid solvent-extraction sampling technique for neutron-activation analysis
T. B. Pierce,P. F. Peck +1 more
TL;DR: In this paper, a solvent extraction sampling technique was used for comparing the specific activity of an element separated from an irradiated sample with that of a standard after both have been diluted with inactive carrier.
Journal ArticleDOI
Über die Verwendung unterstöchiometrischer Fällungsreaktionen in der radiochemischen Analyse
TL;DR: In this paper, das Prinzip der Verwendung unterstochiometrischer Endfallungen bei radiochemischen Analysen an der aktivierungsanalytischen Bestimmung von Zirkonium and Hafniumspuren in Reinstaluminium und an der bestimmung of Spaltcasium in Spaltproduktgemischen erlautert.
Related Papers (5)
A new principle of activation analysis separations—I: Theory of substoichiometric determinations
Jaromír Růžička,Jiří Starý +1 more