Abstract
Three different MC-ICPMS instruments were calibrated by means of synthetic isotope mixtures to enable absolute Mg isotope ratios with expanded uncertainties of ≤0.15‰.
Highlights
Measuring the isotopic composition of an element requires mass spectrometry, and – due to the speci cs of mass spectrometers – always requires calibration, e.g. using a suitable reference material, since mass spectrometers in principle do Measuring absolute isotopic compositions, requires the calibration of mass spectrometers by primary isotopic reference materials, which in turn requires the certi cation of such a material
Since we provide mono-elemental solutions, homogeneity and stability issues can be solved,8,9 and only the characterization measurements remain a source of uncertainty, which in turn depend on the isotope ratio repeatability of the selected mass spectrometer and the uncertainty of
A set of three candidate reference materials were characterized with candidate European Reference Materials (ERM)-AE143 being nearly identical to NIST SRM 980 in terms of its Mg isotopic composition
Summary
Measuring the isotopic composition of an element requires mass spectrometry, and – due to the speci cs of mass spectrometers – always requires calibration, e.g. using a suitable reference material, since mass spectrometers in principle do Measuring absolute isotopic compositions, requires the calibration of mass spectrometers by primary isotopic reference materials, which in turn requires the certi cation of such a material. In ICP instruments, the instability of the plasma ionization source results in large signal variations; as a result, measuring isotope signals on one detector and switching between isotopes in the measurement sequence can result in a large bias and uncertainties. To overcome these drawbacks, the isotopes are measured simultaneously using two or more Faraday cups (collectors); this allows removal of the in uence of plasma intensity uctuations since all signals are measured at the same time, and are in uenced by the same variation
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
