The Spectrochemical Determination of Argon in Air

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A spectrochemical procedure to determine the ratio of the concentration of argon in a sample slightly different from air to the concentration of argon in air was developed using an electrodeless discharge tube and a 22-foot direct-reading optical spectrometer. A precision of ±0.43% at the 95% confidence level was obtained for a single determination made in 1 minute.

A method of relative precisions to obtain optimum adjustments of the equipment is described. This method was used to determine the optimum discharge tube pressure and the optimum entrance slit width.

Document Type: Research Article


Affiliations: Carbide and Carbon Chemicals Company, K-25 Plant, Oak Ridge, Tennessee

Publication date: February 1, 1955

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