FIRST δ<sup>13</sup>C RESULTS WITH A NEW CONNECTION BETWEEN THE EA-IRMS SYSTEM AND THE GAS INJECTION SYSTEM AT COLOGNEAMS
ABSTRACT This work presents the integration of an elemental analyzer (EA) and an isotope ratio mass spectrometer (IRMS) into the 6 MV AMS system at the Institute for Nuclear Physics, University of Cologne. The AMS measurement of δ 13 C values for IAEA-C6 reference material resulted in –11.39(226)‰, compared to –10.28(32)‰ obtained by IRMS. The EA-IRMS system was also tested with IAEA-C3, IAEA-C5, and IAEA-C7 reference materials, yielding –24.79(9), –25.18(15), and –14.76(18)‰ respectively. Compared to the IAEA information values given as –24.91(49), –25.49(72) and –14.48(21)‰ respectively. To investigate an observed sample mass dependency, environmental samples from Spitzbergen were examined, showing δ 13 C values of –25.17(55), –25.80(31), and –26.17‰ in Cologne, while Hamburg recorded –24.8(1), –25.5(1), and –26.2(13)‰. In summary, this new setup could enable online analysis and quasi-simultaneous measurements of 14 C, δ 13 C, and δ 15 N for ultra-small samples, utilizing precise δ 13 C values from IRMS for fractionation correction of the 14 C/ 14 C isotopic ratio.
Authors
- Α. Dewald (ORCID: https://orcid.org/0000-0002-6386-8945)
- D. Mücher (ORCID: https://orcid.org/0000-0002-6297-9694)
- Ramona Mörchen (ORCID: https://orcid.org/0000-0002-3955-6490)
- M. Schiffer (ORCID: https://orcid.org/0000-0002-9226-2088)
- Stefan Heinze (ORCID: https://orcid.org/0000-0001-5852-0082)
- A. Stolz (ORCID: https://orcid.org/0000-0001-7624-6486)
- Janet Rethemeyer (ORCID: https://orcid.org/0000-0001-6698-4186)
- Andrea Jaeschke (ORCID: https://orcid.org/0000-0003-2518-2739)
- Martina Gwozdz (ORCID: https://orcid.org/0000-0001-8248-1423)
Institutions
- University of Bonn (DE)
- University of Cologne (DE)
Publication Details
- Journal
- Radiocarbon
- Published
- 2024-09-20
- DOI
- https://doi.org/10.1017/rdc.2024.74
- Primary Topic
- Nuclear reactor physics and engineering
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- University of Cambridge