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Title (Primary) High-temperature elemental analysis and pyrolysis techniques for stable isotope analysis
Author Gehre, M.; Strauch, G.;
Journal Rapid Communications in Mass Spectrometry
Year 2003
Department ISOBIO; HDG;
Volume 17
Issue 13
Language englisch;
Abstract

A universal method for pyrolysis and elemental analysis, suitable for the online determination of deuterium, carbon, nitrogen and oxygen isotopes for organic and inorganic substances, is presented. The samples are pyrolytically decomposed in a high-temperature pyrolysis (HTP) system, at a temperature exceeding 1400degreesC, in the presence of reactive carbon. The method is suitable for the analysis of stable isotope ratios from hydrogen, carbon, nitrogen and oxygen. The instrumentation and experimental procedure are simple and cost-effective. The reproducibility of the delta values for D/H is better than 3parts per thousand, and for O-18, C-13 (organic) and N-15 (inorganic) it is similar to0.2parts per thousand. The HTP system is suitable for solid and liquid samples and can use an autosampler for the samples. Results are presented for the isotopic composition of international reference materials and selected laboratory reference materials, which demonstrate the precision and accuracy of the method. Possible problems in the measurement of nitrates and their solutions are particularly discussed. The analyses of oxygen isotopes in selected geological samples (carbonates, silicate, biotite) are demonstrated.

ID 4831
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=4831
Gehre, M., Strauch, G. (2003):
High-temperature elemental analysis and pyrolysis techniques for stable isotope analysis
Rapid Commun. Mass Spectrom. 17 (13), 1497 - 1503