Abstract

This paper will report an investigation of the procedure routinely used for the analysis of electromagnetically separated isotopes and in particular the variations in analytical results due to matrix effects. Analytical samples are mixed in a ratio of 1 to 9 parts graphite by weight and arced at 5 amperes, 2400 volts a.c. in a 3/16-inch pedestal type electrode. Inconsistencies in analytical results for certain samples prompted the authors to study some common impurities; namely, Al, Fe, Ca, Ba, and Si in matrices involving fluorides, chlorides, carbonates, and sulfates of several alkaline and alkaline earth elements which from experience have shown the greatest variations. Quantitative data showing enhancement and suppression effects are given.

Spectrographic Procedure for Analysis of Powdered Samples of Unknown Origin

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