NT & RP Journal

CONCENTRATIONS OF NATURAL RADIONUCLIDES IN IMPORTED ZIRCONIUM MINERALS
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Vol. XXVI, No. 2, Pp. 101-179
September 2011
UDC 621.039+614.876:504.06 ISSN 1451-3994

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Pages: 110-114

Authors: Marija M. Jankoviæ and Dragana J. Todoroviæ

Abstract

The natural radioactivity in imported zircon samples used as glaze for ceramic tiles in the ceramics industry has been presented in this paper. The measurements were made by gamma spectrometry with a high purity germanium detector. The average activity concentrations of 238U and 232Th determined in the measured samples (3250 Bq/kg, and 556 Bq/kg, respectively) are much higher than the concentrations found in the Earth’s crust. The activity concentration of 226Ra is also high in all analyzed samples, while 40K was not detected. The gamma index, I, the external hazard index,Hcx, the internal hazard index,Hin, and the radium equivalent activity,Racg, were calculated. Due to relatively high activity concentration level of uranium in imported zircon samples, specific regulations are necessary for zircon compound used in ceramic industry. It can be concluded that the investigated samples can be used as the component of ceramic glaze in the concentrations not above 3%.

 

 

Key words: zircon, ceramics, radioativity, gamma spectrometry

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Vinča Institute of Nuclear Sciences :: Designed by milas :: July 2007
Last updated on Oktober, 2011