Determination of depleted uranium in environmental bio-monitor samples and soil from target sites in western Balkan region
AuthorsSahoo, Sarata Kumar
Čeliković, Igor T.
Žunić, Zora S.
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Lichen and Moss are widely used to assess the atmospheric pollution by heavy metals and radionuclides. In this paper, we report results of uranium and its isotope ratios using mass spectrometric measurements (followed by chemical separation procedure) for mosses, lichens and soil samples from a depleted uranium (DU) target site in western Balkan region. Samples were collected in 2003 from Han Pijesak (Republika Srpska in Bosnia and Hercegovina). Inductively coupled plasma mass spectrometry (ICP-MS) measurements show the presence of high concentration of uranium in some samples. Concentration of uranium in moss samples ranged from 5.2 - 755.43 Bq/Kg. We have determined U-235/U-238 isotope ratio using thermal ionization mass spectrometry (TIMS) front the samples with high uranium content and the ratios are in the range of 0.002097-0.002380. TIMS measurement confirms presence of DU in some samples. However, we have not noticed any traces of DU in samples containing lesser amount of uraniu...m or from any samples from the living environment of same area.
Keywords:environmental radioactivity / uranium / depleted uranium / mass spectrometry
Source:AIP Conference Proceedings, 2008, 1034, 287-+
- Agency for Natural Resources and Energy, Ministry of Economy, Trade and Industry (METI), Japan, Ministry of Science and Environmental Protection of the Republic of Serbia
- 8th International Symposium on Natural Radiation Environment, Oct 07-12, 2007, Buzios, Brazil