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Advances in Radiocarbon Measurement of Water Samples

Abstract

In this paper two very different and novel methods for the {sup 14}C measurement of water samples are presented. The first method uses direct absorption into a scintillation cocktail and a following liquid scintillation measurement. Typical sample size is 20-40 L and overall uncertainty is {+-} 2% for modern samples. It is a very cost effective and easy to use method based on a novel and simple static absorption process for the CO{sub 2} extracted from groundwater. The other very sensitive method is based on accelerator mass spectrometry (AMS) using a gas ion source. With a MICADAS type AMS system we demonstrated that you can routinely measure the {sup 14}C content of 1 mL of water sample with better than 1% precision (for a modern sample). This direct {sup 14}C AMS measurement of water takes less than 20 minutes including sample preparation. (author)
Authors:
Janovics, R.; Molnar, M.; Major, I.; [1]  Svetlik, I.; [2]  Wacker, L. [3] 
  1. Institute of Nuclear Research (ATO MKI), Hungarian Academy of Sciences, H-4001 Debrecen (Hungary)
  2. Department of Radiation Dosimetry, Nuclear Physics Institute AS CR, Prague (Czech Republic)
  3. Institute for Particle Physics, ETH Hoenggerberg, Zuerich (Switzerland)
Publication Date:
Jul 15, 2013
Product Type:
Conference
Report Number:
IAEA-CN-186/203
Resource Relation:
Conference: International Symposium on Isotopes in Hydrology, Marine Ecosystems and Climate Change Studies, Monaco (Monaco), 27 Mar - 1 Apr 2011; Other Information: 3 figs., 2 tabs., 11 refs.; Related Information: In: Isotopes in Hydrology, Marine Ecosystems and Climate Change Studies, Vol. 2. Proceedings of the International Symposium| 655 p.
Subject:
58 GEOSCIENCES; ABSORPTION; ACCURACY; CARBON 14; CARBON DIOXIDE; GROUND WATER; LIQUIDS; MASS SPECTROSCOPY; SAMPLE PREPARATION; SCINTILLATIONS
OSTI ID:
22123110
Research Organizations:
International Atomic Energy Agency, Department of Nuclear Sciences and Applications, Vienna (Austria)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ISSN 0074-1884; ISBN 978-92-0-135610-9; TRN: XA13R0917078912
Availability:
Also available on-line: http://www-pub.iaea.org/MTCD/Publications/PDF/SupplementaryMaterials/Pub1580_vol2_web.pdf; Enquiries should be addressed to IAEA, Marketing and Sales Unit, Publishing Section, E-mail: sales.publications@iaea.org; Web site: http://www.iaea.org/books
Submitting Site:
INIS
Size:
page(s) 369-376
Announcement Date:
Aug 30, 2013

Citation Formats

Janovics, R., Molnar, M., Major, I., Svetlik, I., and Wacker, L. Advances in Radiocarbon Measurement of Water Samples. IAEA: N. p., 2013. Web.
Janovics, R., Molnar, M., Major, I., Svetlik, I., & Wacker, L. Advances in Radiocarbon Measurement of Water Samples. IAEA.
Janovics, R., Molnar, M., Major, I., Svetlik, I., and Wacker, L. 2013. "Advances in Radiocarbon Measurement of Water Samples." IAEA.
@misc{etde_22123110,
title = {Advances in Radiocarbon Measurement of Water Samples}
author = {Janovics, R., Molnar, M., Major, I., Svetlik, I., and Wacker, L.}
abstractNote = {In this paper two very different and novel methods for the {sup 14}C measurement of water samples are presented. The first method uses direct absorption into a scintillation cocktail and a following liquid scintillation measurement. Typical sample size is 20-40 L and overall uncertainty is {+-} 2% for modern samples. It is a very cost effective and easy to use method based on a novel and simple static absorption process for the CO{sub 2} extracted from groundwater. The other very sensitive method is based on accelerator mass spectrometry (AMS) using a gas ion source. With a MICADAS type AMS system we demonstrated that you can routinely measure the {sup 14}C content of 1 mL of water sample with better than 1% precision (for a modern sample). This direct {sup 14}C AMS measurement of water takes less than 20 minutes including sample preparation. (author)}
place = {IAEA}
year = {2013}
month = {Jul}
}