A carbon dioxide collection accessory for the rapid combustion apparatus for preparation of biological samples for liquid scintillation analysis |
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Authors: | John I. Peterson |
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Affiliation: | Biomedical Engineering and Instrumentation Branch, Division of Research Services, U.S. Department of Health, Education and Welfare, National Institutes of Health, Bethesda, Maryland 20014 USA |
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Abstract: | A carbon dioxide collection accessory is described for the previously reported combustion system for preparation of biological samples for liquid scintillation counting. A sample can be burned and collected every 3 min. Sample size is limited by the capacity of the solvent to absorb carbon dioxide without precipitation. The system can be used for collecting water as well as carbon dioxide, for double isotope counting. The method has a collection recovery of 97%, is calibrated by internal standards, and shows a coefficient of variation of 1.1%. |
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