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Radiation Protection Dosimetry Advance Access published online on November 30, 2004
Radiation Protection Dosimetry, doi:10.1093/rpd/nch434
Copyright © 2004 Oxford University Press.
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Received October 22, 2004
Revised November 8, 2004
Accepted November 8, 2004

SCIENTIFIC NOTE

NATURAL RADIOACTIVITY IN SOME BUILDING MATERIALS IN CUBA AND THEIR CONTRIBUTION TO THE INDOOR GAMMA DOSE RATE

O. Brígido Flores 1*, A. Montalván Estrada 1, and J. Tomás Zerquera 2

1 Environmental Engineering Centre, Radioactivity Measurement Laboratory, Ave. Finlay km 2.5 Esquina Circunvalación, Rpto. Puerto Príncipe, Camagüey, Cuba
2 Centre for Radiation Protection and Hygiene, 20 St. No. 4109, Miramar, PO Box 6195, Havana 6, Havana City, Cuba

* To whom correspondence should be addressed.
O. Brígido Flores, E-mail: o.brigido{at}ciac.cmw.inf.cu


  Abstract

The natural radioactivity of some building materials commonly used in Cuba was measured by gamma spectrometry. Typical concentrations encountered so far encountered are in the ranges: 47-2511 Bq kg-1 for 40K; 9-71 Bq kg-1 for 226Ra; and 2-38 Bq kg-1 for 232Th. The external gamma ray absorbed doses in indoor air and the corresponding effective dose-equivalents in a typical dwelling are presented in this paper.


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