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The Spectrochemical Analysis of Super Pure Chromium for Impurities

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A method is described for the spectrochemical analysis of super pure chromium for six impurity elements. The chromium is removed by volatilisation as chromyl chloride and the impurities collected on a calcium sulphate matrix. This is burned in a d.c. arc and the intensities of the impurity lines are measured with reference to indium, which is added as an internal standard. Working curves are shown for the six elements, Mg, Pb, Fe, Al, Cu and Ag in the concentration range 0.005 - 0.0001 per cent. Results are given of a typical analysis and the standard deviations.

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/000370259774615077

Affiliations: Australian Defence Scientific Service, Defence Standards Laboratories, Department of Supply, Maribyrnong, Victoria, Australia

Publication date: April 1, 1959

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