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Problems and Methods of Dating Low-Activity Samples by Liquid Scintillation Counting

Published online by Cambridge University Press:  18 July 2016

Kh. A. Arslanov ,
T. V. Tertychnaya  and
S. B. Chernov
Kh. A. Arslanov
Affiliation:
Geographical Research Institute, St. Petersburg State University, Sredniy Prospect 41 St. Petersburg 199004 Russia
T. V. Tertychnaya
Affiliation:
Geographical Research Institute, St. Petersburg State University, Sredniy Prospect 41 St. Petersburg 199004 Russia
S. B. Chernov
Affiliation:
Geographical Research Institute, St. Petersburg State University, Sredniy Prospect 41 St. Petersburg 199004 Russia
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Abstract

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The important problem of contamination of old samples by younger 14C necessitates treatment of organic and carbonate samples to ensure more complete removal of contaminating carbon. Here we present studies of chemical procedures for the liquid scintillation method of 14C dating undertaken since 1960 in the former USSR. We discuss new procedures such as lithium carbide synthesis from charred organic samples and benzene synthesis on a V2O5·Al2O3·SiO2 catalyst, as well as memory effect in the carbide synthesis procedure and characteristics of two homemade counters.

Type
Methodological Studies
Information
Radiocarbon , Volume 35 , Issue 3 , 1993 , pp. 393 - 398
Copyright
Copyright © The American Journal of Science 

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