Accession Number : AD0626987

Title :   PREPARATION OF STANDARD SAMPLES AND DEVELOPMENT OF ANALYTICAL TECHNIQUES FOR CARBON AND NITROGEN IN HIGH-PURITY BERYLLIUM.

Descriptive Note : Final rept.,

Corporate Author : NUCLEAR METALS DIV TEXTRON INC WEST CONCORD MASS

Personal Author(s) : Aronin,L. R. ; Bauman,F. A. ; Wolff,A. K.

Report Date : OCT 1965

Pagination or Media Count : 50

Abstract : Analytical techniques have been developed for the determination of carbon in high-purity beryllium. The method, a modification of the combustion-conductometric technique, permits an increase in the sample size of about four times, thereby achieving a fourfold reduction in the lower limit of useful analytical results. Sensitivity has been demonstrated for carbon contents as low as 25 ppm. The accuracy of a solution distillation technique for determination of nitrogen in high-purity beryllium has been established. A modified micro-Kjeldahl still was employed. Nitrogen contents less than 10 ppm can be accurately determined. Three batches of beryllium weighing roughly 5 pounds each have been prepared. Each batch was attritioned, sized and blended to provide a homogeneous material for analytical standards. These standards, in the form of coarse chips, have the following carbon and nitrogen contents for the 3 standards in parts per million, respectively: carbon, 25, 101, and 120 and nitrogen, 11, 55, and 56.

Descriptors :   (*BERYLLIUM, QUANTITATIVE ANALYSIS), CHEMICAL ANALYSIS, DETERMINATION, DISTILLATION, COMBUSTION, BERYLLIUM ALLOYS, CARBON, NITROGEN

Subject Categories : Inorganic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE