Development of stable isotope ratio measurement by HR-ICPMS.
Abstract
This project focuses on the use of a commercially available high-resolution ICP-mass spectrometer for determining accurately and precisely strontium isotope ratios within human bone samples. For improving precision and accuracy optimal instrument operating parameters and instrumental bias factors, like mass bias and dead time were investigated as an initial step. The instrument was used without modification and, for most experiments, employed with a commercial Microconcentric Nebulizer (Model MCN-100, Cetac Technologies Inc, Omaha, Nebraska, USA). All experiments were performed under clean room conditions with filtered (class 10.000), temperature controlled and excess pressured air. 87Sr/86Sr isotope ratio precision of 0.06% (RSD for n=10) or less was achieved using NIST SRM 987 Strontium Carbonate (Isotopic) to reveal 87Sr/86Sr = 0.7098 ? 0.0004 compared with certified values of 0.71034 ? 0.00026. The internal mass bias correction (determining the mass bias of the 88Sr/86Sr ratio) was employed in obtaining this data.
Publikationen
Mitarbeiter*innen
Thomas Prohaska
Ao.Univ.Prof. Dipl.-Ing. Dr.techn. Thomas Prohaska
thomas.prohaska@boku.ac.at
Projektleiter*in
01.10.1996 - 31.12.1997
Gerhard Josef Stingeder
Univ.-Prof. i.R. Dipl.-Ing. Dr.techn. Gerhard Josef Stingeder
gerhard.stingeder@boku.ac.at
Projektmitarbeiter*in
01.10.1996 - 31.12.1997
BOKU Partner
Externe Partner
University of Ghent
keiner
Partner