Details

Autor(en) / Beteiligte

• Wertnik, Melina
• Wacker, Lukas
• Bernasconi, Stefano M.
• Haghipour, Negar
• Eglinton, Timothy I
• Welte, Caroline

Titel

A UNIVERSAL GAS INTERFACE FOR SIMULTANEOUS 14 C AND δ 13 C MEASUREMENTS

Ist Teil von

• Radiocarbon, 2023-12, p.1-11

Erscheinungsjahr

2023

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• ABSTRACT While simultaneous radiocarbon and δ 13 C measurements have been available for organic materials (by accelerator mass spectrometry, AMS, and isotope ratio mass spectrometry, IRMS, respectively), this has not been possible for carbonates until now. Using an existing interface for gas ion source AMS measurements, we developed a prototype for a universal gas interface that allows simultaneous measurement of both carbon isotope ratios from potentially any source of CO 2 . First results obtained from reference materials (IAEA-C6, OxaII, PhA, IAEA-C1, IAEA-C2, ETH-4) show that for both organic as well as carbonate samples, the precision of radiocarbon measurements in the coupled mode is comparable to routine standalone AMS measurements. For IRMS δ 13 C measurements, the performance for different materials shows more variation with precisions ranging from 0.07‰ to 0.47‰. However, both organic materials and carbonates can achieve precisions as good as 0.13‰. Once fully automated, the method shows potential for filling the gap of simultaneous carbon isotope measurements for non-organic materials.