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Intercomparison of C-14 Dating of Wood Samples at Lund University and Eth-Zurich Ams Facilities: Extraction, Graphitization, and Measurement

Author:
  • Florian Adolphi
  • D. Guettler
  • L. Wacker
  • Göran Skog
  • Raimund Muscheler
Publishing year: 2013
Language: English
Pages: 391-400
Publication/Series: Radiocarbon
Volume: 55
Issue: 2-3
Document type: Journal article
Publisher: Arizona Board of Regents (University of Arizona)

Abstract english

We conducted an interlaboratory comparison between our radiocarbon-related research group at Lund University and the established ETH-Zurich facility to test the quality of the results obtained in Lund and to identify sources of potential background differences and scatter. We did find differences between the 2 laboratories in the contributions of chemical preparation, graphitization, and measurements to the overall background. The resulting overall background is, however, almost similar. Multiple measurements on 2 wood samples of known calendar age yield consistent and accurate C-14 ages in both laboratories. However, one of our known samples indicates that IntCal09 is similar to 38 +/- 16 C-14 BP too young at 7020 calendar yr BP, which is consistent with one of the raw data sets contributing to IntCal09. Overall, our results show that a systematic approach to compare the different steps involved in C-14 age determination is a useful exercise to pinpoint targets for improvement of lab routines and assess interlaboratory differences. These effects do not necessarily become apparent when comparing C-14 measurements that integrate over the whole process of preparation and measurement of different laboratories.

Keywords

  • Geology

Other

Published
  • BECC
  • MERGE
  • ISSN: 0033-8222
Raimund Muscheler
E-mail: raimund.muscheler [at] geol.lu.se

Professor

Quaternary Sciences

+46 46 222 04 54

479

Sölvegatan 12, Lund

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