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Development of a radiotracer method for measuring CO2 uptake by cement - wood mixtures

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Abstract

Radiotracer method was developed for measuring14CO2 content in cement-wood mixtures. The carbon dioxide used for the treatment was labeled with14C, a β-emitting radioisotope, and samples were measured by β-scintillation and liquid scintillation techniques. Test samples were prepared in the laboratory with various compositions and treated with labeled14CO2. The tracer was released from Ba14CO3 by lactic acid with total activity of 37 MBq. Selectivity of the technique allows to distinguish the carbon dioxide bound during the treatment and bound previously from the mbient air. Sensitivity of the method is higher than that of traditional methods and allowed determination of CO2 content in each component of the mixture. It is 63 ng. if measured by β-scintillation detector and 1.6 ng, if measured by liquid scintillation. Accuracy of the method is 0.3%.

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Authors and Affiliations

  1. Atomic Energy Organization of Iran, Nuclear Research Center, P.O. Box 11365-8486, Tehran, (Iran)

    H. Rahimi

  2. Institute of Isotopes of the Hungarian Academy of Sciences, Budapest, (Hungary)

    L. Baranyai

Authors
  1. H. Rahimi
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  2. L. Baranyai
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Rahimi, H., Baranyai, L. Development of a radiotracer method for measuring CO2 uptake by cement - wood mixtures. Journal of Radioanalytical and Nuclear Chemistry, Articles 162, 83–90 (1992). https://doi.org/10.1007/BF02039928

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  • DOI: https://doi.org/10.1007/BF02039928

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