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Radiochimica Acta

International Journal for chemical aspects of nuclear science and technology

Editor-in-Chief: Qaim, Syed M.


IMPACT FACTOR 2017: 1.202

CiteScore 2017: 1.22

SCImago Journal Rank (SJR) 2017: 0.409
Source Normalized Impact per Paper (SNIP) 2017: 0.869

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2193-3405
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Volume 100, Issue 6

Issues

Radon capture with silver exchanged zeolites

Hanna Hedström / Mark Foreman
  • 1 Chalmers University of Technology, Department of Chemical and Biological Engineering, 41296 Göteborg, Schweden
  • Other articles by this author:
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/ Christian Ekberg
  • 2 Chalmers University of Technology, Dept. of Chemical and Biological Engineering, 41296 Göteborg, Schweden
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/ Henrik Ramebäck
  • 3 Chalmers University of Technology, Department of Chemical and Biological Engineering, 41296 Göteborg, Schweden
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Published Online: 2012-01-31 | DOI: https://doi.org/10.1524/ract.2012.1932

Abstract

To enable laboratory work with larger amounts of 226Ra and its decay products, e.g., 222Rn and its daughters, these need to be captured in order to avoid unnecessary alpha contamination of the laboratory work space and ventilation systems.

In this study, radon gas was pumped through a column filled with the silver exchanged zeolite called “silver exchanged molecular sieves 13X” (Ag84Na2[(AlO2)86(SiO2)106xH2O). After exposure to radon, the radioactivity of the zeolite was measured repeatedly using high resolution gamma spectrometry. It was shown that radon was captured and retained in the silver exchanged zeolite. The zeolites´ ability to retain radon was decreased by formation of metallic silver, caused by ionizing radiation. However, the zeolite was regenerated by heating and its radon capture ability was restored. The daughters of radon are not in gas phase and will hence stay on the column.

Keywords: radon; zeolite; adsorption

About the article

* Correspondence address: Chalmers University of Technology, Department of Chemical and Biological Engineering, Kemivägen 4, Nuclear Chemistry, 41296 Göteborg, Schweden


Published Online: 2012-01-31

Published in Print: 2012-06-01


Citation Information: Radiochimica Acta International journal for chemical aspects of nuclear science and technology, Volume 100, Issue 6, Pages 395–399, ISSN (Print) 2193-3405 , DOI: https://doi.org/10.1524/ract.2012.1932.

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