Work

An advancement of the gravimetric isotope mixture method rendering the knowledge of the spike purity superfluous

Year: 2024

Type: article

Abstract: The gravimetric isotope mixture method is the primary method to determine absolute isotope ratios. This method, however, depends on the existence of suitable spike materials and knowledge of their purities. Determining the purity of the spikes can be tedious and labour-intensive. In this publication, an advancement of the gravimetric isotope mixture method, rendering the determination of the purity of the spike materials unnecessary, is presented. The advancement combines mass spectrometry and ion chromatography leading to an approach being independent of the purity of the spike materials. In the manuscript the mathematical background and the basic idea of the novel approach are described using a two-isotope system like copper or lithium.

Source: Analytical and Bioanalytical Chemistry

DOI: 10.1007/s00216-024-05465-9

Authors: Lukas Flierl, Olaf Rienitz, Jochen Vogl, Axel Pramann

Institutions: Physikalisch-Technische Bundesanstalt, Federal Institute For Materials Research and Testing

Language: English

Topic: Analytical chemistry methods development

Subfield: Analytical Chemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,790

Funders: European Partnership on Metrology, European Commission