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Improved Results Using Higher Ratios of Scintillator Solution to Benzene in Liquid Scintillation Spectrometry

Published online by Cambridge University Press:  18 July 2016

Motoharu Koba
Motoharu Koba*
Affiliation:
Institute of History and Geography, Faculty of Letters, Kansai University, Suita, Osaka 564-8680, Japan. Email: moto@ipcku.kansai-u.ac.jp
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Abstract

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Practical effects of the volumetric or weight ratio of scintillator solution to sample benzene in liquid scintillation spectrometry were examined here for radiocarbon dating. It is concluded, using a LKB-Wallac Quantulus™ 1220 and Teflon™-copper 3 mL vials with scintillator of toluene-based PPO and POPOP, that solutions containing the same concentrations of the same ratio, 1.3 or more, of scintillator solution to sample benzene show the same cpm/g and the same channel value of external standard spectrum, irrespective of different gross volumes of solutions. The addition of scintillator solution reduces background in 0.5 mL or so of benzene, and results in an appreciably enlarged figure of merit.

Type
Articles
Information
Radiocarbon , Volume 42 , Issue 2 , 2000 , pp. 295 - 303
Copyright
Copyright © 2000 by the Arizona Board of Regents on behalf of the University of Arizona 

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