Absolute isotopic abundance ratio and atomic weight of a reference sample of gallium
An absolute value was obtained for the isotopic abundance ratio of a reference sample of gallium (Standard Reference Material 994), using thermal-ionization mass spectrometry. Samples of known isotopic composition, prepared from nearly isotopically pure separated gallium isotopes, were used to calibrate the mass spectrometers. The resulting absolute (69)Ga/(71)/Ga ratio is 1.50676 + or - 0.00039, which yields atom percents of (69)Ga=60.1079 + or - 0.0062 and (71)Ga=39.8921 + or - 0.0062. The atomic weight calculated from this isotopic composition is 69.72307 + or - 0.00013. The indicated uncertainties are overall limits of error based on two standard deviations of the mean and allowances for the effects of known sources of possible systematic error.
- Research Organization:
- National Bureau of Standards, Washington, DC (USA). Center for Analytical Chemistry
- OSTI ID:
- 6836936
- Report Number(s):
- PB-87-137170/XAB; TRN: 87-009319
- Resource Relation:
- Other Information: Included in J. of Research of the National Bureau of Standards, Vol. 91, No. 6, 323-331(Nov-Dec 1986)
- Country of Publication:
- United States
- Language:
- English
Similar Records
Isotopic fractionation of gallium on an ion-exchange column
Absolute isotopic abundance ratios and atomic weight of a reference sample of nickel
Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
GALLIUM
MASS NUMBER
GALLIUM ISOTOPES
ISOTOPE RATIO
CALIBRATION STANDARDS
CHEMICAL ANALYSIS
GALLIUM 69
GALLIUM 71
MASS SPECTROSCOPY
ELEMENTS
INTERMEDIATE MASS NUCLEI
ISOTOPES
METALS
NUCLEI
ODD-EVEN NUCLEI
SPECTROSCOPY
STABLE ISOTOPES
STANDARDS
651620* - Nuclear Properties & Reactions
A=59-89
Experimental
400102 - Chemical & Spectral Procedures