Compatibility of atmospheric 14CO2 measurements: comparing the Heidelberg low-level counting facility to international accelerator mass spectrometry (AMS) laboratories
Combining atmospheric Δ14CO2 data sets from different networks or laboratories requires secure knowledge on their compatibility. In the present study, we compare Δ14CO2 results from the Heidelberg low-level counting (LLC) laboratory to 12 international accelerator mass spectrometry (AMS) laboratorie...
Gespeichert in:
| Hauptverfasser: | , |
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| Dokumenttyp: | Article (Journal) Konferenzschrift |
| Sprache: | Englisch |
| Veröffentlicht: |
2017
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| In: |
Radiocarbon
Year: 2016, Jahrgang: 59, Heft: 03, Pages: 875-883 |
| ISSN: | 1945-5755 |
| DOI: | 10.1017/RDC.2016.62 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1017/RDC.2016.62 Verlag, Volltext: https://www.cambridge.org/core/product/identifier/S003382221600062X/type/journal_article 
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| Verfasserangaben: | Samuel Hammer, Ronny Friedrich, Bernd Kromer, Alexander Cherkinsky, Scott J Lehman, Harro AJ Meijer, Toshio Nakamura, Vesa Palonen, Ron W Reimer, Andrew M Smith, John R Southon, Sönke Szidat, Jocelyn Turnbull, and Masao Uchida |
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| 245 | 1 | 0 | |a Compatibility of atmospheric 14CO2 measurements |b comparing the Heidelberg low-level counting facility to international accelerator mass spectrometry (AMS) laboratories |c Samuel Hammer, Ronny Friedrich, Bernd Kromer, Alexander Cherkinsky, Scott J Lehman, Harro AJ Meijer, Toshio Nakamura, Vesa Palonen, Ron W Reimer, Andrew M Smith, John R Southon, Sönke Szidat, Jocelyn Turnbull, and Masao Uchida |
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| 520 | |a Combining atmospheric Δ14CO2 data sets from different networks or laboratories requires secure knowledge on their compatibility. In the present study, we compare Δ14CO2 results from the Heidelberg low-level counting (LLC) laboratory to 12 international accelerator mass spectrometry (AMS) laboratories using distributed aliquots of five pure CO2 samples. The averaged result of the LLC laboratory has a measurement bias of -0.3 ± 0.5‰ with respect to the consensus value of the AMS laboratories for the investigated atmospheric Δ14C range of 9.6 to 40.4‰. Thus, the LLC measurements on average are not significantly different from the AMS laboratories, and the most likely measurement bias is smaller than the World Meteorological Organization (WMO) interlaboratory compatibility goal for Δ14CO2 of 0.5‰. The number of intercomparison samples was, however, too small to determine whether the measurement biases of the individual AMS laboratories fulfilled the WMO goal. | ||
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