A primary xenon isotopic gas standard with SI traceable values for isotopic composition and molar mass
A metrological certification measurement was made on a large batch of natural xenon. The measurements were performed using the same procedure for measurements of amount ratios as developed for the improvement of the Avogadro constant. During the measurement, the gas effusion from the expansion vessel into the ion source was continuously monitored. Synthetic mixtures were made of enriched Xenon isotopes and measured. They did not reveal a significant correction factor within the measurement uncertainty of 5E-4. Thus an isotopic composition and a molar mass (atomic weight) value for this natural Xe was established by procedures confirmed to be self calibrating at this level. The gas available in 1L pressure cans as a primary isotopic gas standard (PIGS), IRMM-700, for accurate amount ratio measurements of xenon in geological, atmospheric and other studies.
Bibliographic Reference: Article: International Journal of Mass Spectrometry Ion Proc (1997)
Record Number: 199711044 / Last updated on: 1997-09-16
Original language: en
Available languages: en