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A NOTE: RADIOCARBON DATA COMPARISON OF SMALL GASEOUS SAMPLES MEASURED BY TWO MICADAS AT ETH ZURICH AND OCEAN UNIVERSITY OF CHINA

Published online by Cambridge University Press:  23 December 2022

M Chu Open the ORCID record for M Chu [Opens in a new window]  and
R Bao
M Chu
Affiliation:
Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, and Center for Ocean Carbon Neutrality, Ocean University of China, Qingdao, China Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
R Bao*
Affiliation:
Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, and Center for Ocean Carbon Neutrality, Ocean University of China, Qingdao, China Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China Department of Earth Sciences, Geological Institute, ETH Zurich, Zurich, Switzerland
*
*Corresponding author. Email: baorui@ouc.edu.cn
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Abstract

A MIni CArbon DAting System (MICADAS) has been recently installed at the Ocean University of China (OUC) mainly for determining the radiocarbon (14C) ages for marine sedimentary organic carbon. In this study, we compared the data from a series of CO2 samples measured independently by the MICADAS at OUC and ETH Zurich to assess whether the data from the OUC MICADAS meet our requirement for carbon cycle research. The measured samples covered a range of 14C ages from 1229 to 12,287 yr, and size from 5 to 162 µg C. The data from the two instruments showed a good linear relationship with only small 14C age offsets, meeting our research demands such as carbon source apportionment. Lastly, we propose that for MICADAS clients, such a cross-lab comparison of the size- and age-dependency of MICADAS using age-known samples is important for 14C data integration.

Keywords

inter-comparisonMICADASOcean University of Chinaradiocarbonsmall gaseous samples
Type
Case Study
Information
Radiocarbon , Volume 65 , Issue 1 , February 2023 , pp. 299 - 304
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Copyright
© The Author(s), 2022. Published by Cambridge University Press for the Arizona Board of Regents on behalf of the University of Arizona

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