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A Suitable procedure for preparing of water Samples used in Radiocarbon Intercomparison

Published online by Cambridge University Press:  24 September 2019

H A Takahashi
Affiliation:
Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, Higashi, Tsukuba, 305-8567, Japan
M Minami
Affiliation:
Institute for Space–Earth Environmental Research, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8601, Japan
T Aramaki
Affiliation:
Center for Global Environmental Research, National Institute for Environmental Studies, Onogawa, Tsukuba, 305-8506, Japan
H Handa
Affiliation:
Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, Higashi, Tsukuba, 305-8567, Japan
Y Saito-Kokubu
Affiliation:
Tono Geoscience Center, Japan Atomic Energy Agency, Jorinji Izumi-cho, Toki, 509-5102, Japan
S Itoh
Affiliation:
AMS dating group, Paleo Labo Co. Ltd., Shimotazawa, Kurohone-cho, Kiryu, 376-0144, Japan
Y Kumamoto
Affiliation:
Research and Development Center for Global Change, JAMSTEC, Natushima-cho, Yokosuka, 237-0061, Japan
Corresponding
E-mail address:

Abstract

We studied a suitable procedure for preparing of water samples used in radiocarbon intercomparisons involving dissolved inorganic carbon (DIC). The water samples must have inter-batch consistency and stable 14C concentrations and no sterilizing agent (e.g., HgCl2) should be added, in order to avoid the production of hazardous material. Six water samples, containing widely different amounts and types of salts, DIC, and 14C concentrations (1–100 pMC), were prepared in order to assess the procedure. Sample consistency was investigated through δ13C and chemical compositions; their low variabilities indicate that our procedure can be applied to radiocarbon intercomparison. A specific sample preparation protocol was developed for this kind of applications.

Type
Conference Paper
Copyright
© 2019 by the Arizona Board of Regents on behalf of the University of Arizona 

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Footnotes

Selected Papers from the 23rd International Radiocarbon Conference, Trondheim, Norway, 17–22 June, 2018

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