Isotopic analysis of enriched boron by chemical ionization mass spectroscopy

Conference · Sat Jan 01 04:00:00 EST 1977

OSTI ID:6596450

Hareland, W A

A rapid and accurate CI-MS method has been developed for the isotopic analysis of enriched boron. This method involves the formation of volatile methyl borate from boric acid with direct introduction of the methyl borate into the source of a quadrupole mass spectrometer. Data acquisition and storage is computer-controlled. A subsequent BASIC computer program reads the data from the disc file, computes the average /sup 11/B//sup 10/B ratio for up to 250 separate spectra per analysis and calculates the weight percent boron-10 from the corrected /sup 11/B//sup 10/B ratio using a calibration factor based on a National Bureau of Standards boric acid standard. The relative standard deviation for the analysis of replicate samples of enriched boron with a boron-10 content in the 90 to 95% range does not exceed 0.005%. Analytical results on NBS certified enriched boron agreed to within 0.06% absolute.

• Research Organization: Bendix Corp., Kansas City, MO (USA)
• DOE Contract Number: EY-76-C-04-0613
• OSTI ID: 6596450
• Report Number(s): BDX-613-1940; CONF-771187-1
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104* -- Spectral Procedures-- (-1987)
BORON
BORON 10
BORON ISOTOPES
CHEMICAL ANALYSIS
DATA ACQUISITION
DATA ANALYSIS
ELEMENTS
IONIZATION
ISOTOPE RATIO
ISOTOPES
LIGHT NUCLEI
MASS SPECTROSCOPY
NUCLEI
ODD-ODD NUCLEI
QUANTITATIVE CHEMICAL ANALYSIS
SEMIMETALS
SPECTROSCOPY
STABLE ISOTOPES