Community Research and Development Information Service - CORDIS

Abstract

In isotope mass spectrometry the atomic weight of an element and its uncertainty is determined by abundance ratio measurements or is calculated from isotope abundances and their uncertainties. The calculation of the atomic weight and its uncertainty from either abundance or abundance ratio data is described, applying classical error propagation laws and matrix calculation methods. Procedures recommended by the International Union for Pure and Applied Chemistry (IUPAC) are discussed with regard to their built-in restrictions. Procedures are suggested which take into consideration the abundance data correlations as well as the uncertainties of the atomic masses, and which are therefore generally applicable to all multi-isotope systems.

Additional information

Authors: SCHAEFER F, JRC Geel (BE);TAYLOR P D P, JRC Geel (BE);VALKIERS S, JRC Geel (BE);DE BIEVRE P, JRC Geel (BE)
Bibliographic Reference: Article: International Journal of Mass Spectrometry and Ion Processes, Vol. 133 (1994) pp. 65-71
Record Number: 199410921 / Last updated on: 1994-11-28
Category: PUBLICATION
Original language: en
Available languages: en