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

Radiocarbon ◽  
1993 ◽  
Vol 35 (3) ◽  
pp. 393-398 ◽  
Author(s):  
Kh. A. Arslanov ◽  
T. V. Tertychnaya ◽  
S. B. Chernov
Keyword(s):  
Memory Effect ◽  
Liquid Scintillation Counting ◽  
Liquid Scintillation ◽  
Complete Removal ◽  
Scintillation Counting ◽  
Scintillation Method ◽  
Synthesis Procedure ◽  
Former Ussr ◽  
New Procedures ◽  
Low Activity

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.

A Chemiluminescent Effect Encountered in the Liquid Scintillation Counting of 32P phosphate

1978 ◽  
Vol 15 (1-6) ◽  
pp. 37-39
Author(s):  
T. K. Bell ◽  
T. R. J. Lappin
Keyword(s):  
Liquid Scintillation Counting ◽  
Liquid Scintillation ◽  
Accurate Determination ◽  
Scintillation Counting ◽  
Enzyme Study ◽  
New Procedures

During the course of a kinetic enzyme study of bisphosphoglyceromutase (EC 2.7.5.4.) a chemiluminescent effect was encountered in the liquid scintillation counting of the β-emission from 32Pi. A method is described for overcoming the effect, thereby permitting the accurate determination of the radioactive compounds. It is important to check for chemiluminescent effects early in the development of new procedures that involve liquid scintillation counting.

scholarly journals Determination of low-level biogenic gasoline, jet fuel, and diesel in blends using the direct liquid scintillation counting method for 14C content

Fuel ◽  
2021 ◽  
Vol 291 ◽  
pp. 120084
Author(s):  
Charles G. Doll ◽  
Andrew E. Plymale ◽  
Alan Cooper ◽  
Igor Kutnyakov ◽  
Marie Swita ◽  
...  
Keyword(s):  
Liquid Scintillation Counting ◽  
Liquid Scintillation ◽  
Jet Fuel ◽  
Scintillation Counting ◽  
Counting Method ◽  
Low Level
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