on 09-23-201905:34 AM - edited on 11-09-202103:46 AM by usermigration2
Simultaneous δ15N, δ13C and δ34S measurements of low biomass samples using a technically advanced high sensitivity elemental analyzer connected to an isotope ratio mass spectrometer T. Hansen, A. Burmeister and U. Sommer Leibniz-Institute for Marine Sciences at Kiel University, Dusternbrooker Weg 20, 24105 Kiel, Germany Rapid Communications in Mass Spectrometry (2009), V23, pp3387–3393, doi: 10.1002/rcm.4267 Conventional simultaneous CNS stable isotope abundance measurements of solid samples usually require high sample amounts, up to 1mg carbon, to achieve exact analytical results. This rarely used application is often impaired by high C:S element ratios when organic samples are analyzed and problems such as incomplete conversion into sulphur dioxide occur during analysis. We introduce, as a technical innovation, a high sensitivity elemental analyzer coupled to a conventional isotope ratio mass spectrometer, with which CNS-stable isotope ratios can be determined simultaneously in samples with low carbon content (<40mg C corresponding to ca. 100mg dry weight).