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Applying the Direct Absorption Method and LSC for 14C Concentration Measurement in Aqueous Samples

Published online by Cambridge University Press:  18 July 2016

Carmen Varlam ,
Ioan Stefanescu ,
Mihai Varlam ,
Irina Popescu  and
Ionut Faurescu
Carmen Varlam*
Affiliation:
National Institute R&D for Cryogenic and Isotopic Technologies, Romania
Ioan Stefanescu
Affiliation:
National Institute R&D for Cryogenic and Isotopic Technologies, Romania
Mihai Varlam
Affiliation:
National Institute R&D for Cryogenic and Isotopic Technologies, Romania
Irina Popescu
Affiliation:
National Institute R&D for Cryogenic and Isotopic Technologies, Romania
Ionut Faurescu
Affiliation:
National Institute R&D for Cryogenic and Isotopic Technologies, Romania
*
Corresponding author. Email: cvarlam@icsi.ro
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Abstract

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We investigated a simple, reliable radiocarbon measurement procedure for water samples using the direct absorption method for sample preparation, followed by low-level liquid scintillation spectrometry. This process has involved quantitative evaluation of the conversion steps in order to estimate the appropriate working parameters. The 14C activity of dissolved inorganic carbon (DIC) for several types of water (ranging from seawater to groundwater) has been measured, paying attention to the preparation requirements of each type of water. The main advantage of this method is the simplified sample preparation, allowing measurement of a great number of samples in less time. This method was designed for routine analysis of water samples, and it is proposed particularly for use in 14C monitoring programs of CANDU-type reactors.

Type
Articles
Information
Radiocarbon , Volume 49 , Issue 2 , 2007 , pp. 281 - 289
Copyright
Copyright © 2007 by the Arizona Board of Regents on behalf of the University of Arizona 

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