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Recent Developments in the Procedures Used at the Sscer Laboratory for the Routine Preparation of Lithium Carbide

Published online by Cambridge University Press:  18 July 2016

Vadim V. Skripkin  and
Nikolai N. Kovaliukh
Vadim V. Skripkin
Affiliation:
State Scientific Centre of Environmental Radiogeochemistry, Paladina 34, Kiev, 252680 Ukraine
Nikolai N. Kovaliukh
Affiliation:
State Scientific Centre of Environmental Radiogeochemistry, Paladina 34, Kiev, 252680 Ukraine
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Abstract

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In this paper we describe and discuss the advantages from improvements in equipment design and operating procedures developed at the State Scientific Centre of Environmental Radiogeochemistry (SSCER) laboratory in Kiev. Two experimental areas are considered, viz.

1. The direct chemisorption into a lithium alloy of carbonaceous gases produced by the controlled thermal degradation (pyrolysis) of organic materials under vacuum. This approach offers the advantage of a single stage, highly efficient and economical procedure for the production of lithium carbide. It is applicable for most types of sample material encountered in routine dating work and including organic detritus dispersed in a highly (up to 95% by weight) mineral matrix and/or carbonates. Bone collagen can also be processed without the need for its prior extraction and purification.

2. A conical thin walled reaction vessel for achieving improved and reproducible recoveries in the production of lithium carbide from CO 2 gas. This apparatus allows a much improved control over the surface dependent reaction in instances where there is no option other than the direct interaction of molten lithium with prepared CO2 gas.

Information

Type
Part 1: Methods
Information
Radiocarbon , Volume 40 , Issue 1: 16th International Radiocarbon Conference 16-20,1997 Groningen , 1997 , pp. 211 - 214
Copyright
Copyright © The American Journal of Science 

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