Accession Number : AD0425811

Title :   THE DETERMINATION OF TRACE AMOUNTS OF BORON IN MOLYBDENUM.

Descriptive Note : Rept. for June 62-July 63,

Corporate Author : RESEARCH AND TECHNOLOGY DIV BOLLING AFB D C

Personal Author(s) : Sugawara,K. F.

Report Date : NOV 1963

Pagination or Media Count : 11

Abstract : The mechanical properties of molybdenum are appreciably affected by the addition of small amounts of boron to the metal during the arc melting process. Thus, a need exists for the rapid and accurate determination of boron in these molybdenum samples. A reliable method has been established for the determination of 1 to 25 micrograms of boron in molybdenum. Dissolution of the metal is effected with a fusion mixture of sodium carbonate and sodium nitrate. The boron is selectively separated by distillation and then determined spectrophotometrically, using carminic acid reagent. In addition, a study was completed to determine the most efficient manner in which the distillation can be accomplished. The sensitivity is approximately 20 parts per million boron in molybdenum, but the sensitivity can be extended by using larger samples. (Author)

Descriptors :   (*BORON, DETERMINATION), (*MOLYBDENUM, CHEMICAL ANALYSIS), SPECTROPHOTOMETERS, DISTILLATION, SENSITIVITY

Distribution Statement : APPROVED FOR PUBLIC RELEASE