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Is high indoor radon concentration correlated with specific activity of radium in nearby soil? A study in Kosovo and Metohija

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Abstract

This paper presents indoor radon concentrations and specific activities of natural radionuclides measured in soils of Kosovo and Metohija. The measurements of radon concentration were performed during two consecutive 6-month periods in two rooms of 63 houses using CR-39 detectors. The annual radon concentration ranged from 30 to 810 Bq m−3 with the average value of 128 Bq m−3. Almost 15% of the houses had radon concentration higher than 200 Bq m−3. The difference between radon concentrations measured in the two 6-month periods was analyzed, showing, as expected, a slightly higher radon concentration in the “winter period” than in the “summer period”. The variation between different rooms of the same houses was also analyzed, showing that 20% of the dwellings had a significantly higher radon concentration (>100 Bq m−3) in one room compared to the other (the coefficient of variation ranged up to 96%). The specific activities of natural radionuclides in the nearby soil were determined by gamma spectrometry. The estimated average value (and standard deviation) of 226Ra, 232Th, and 40K specific activities were 32 (13), 35 (16), and 582 (159) Bq kg−1, respectively. The correlation between indoor 222Rn and 226Ra content in soil was investigated. Only a weak correlation was found (Spearman’s rho = 0.220) indicating that other factors might affect diffusion and accumulation of radon indoors, as confirmed also by the high variability between the rooms of the same houses.

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Acknowledgements

The present work was supported by the Ministry of Education, Science and Technological Development of the Republic of Serbia, under the Project No. III41028 and the Project No. 171021.

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Authors and Affiliations

  1. Faculty of Natural Sciences, University of Pristina, Kosovska Mitrovica, Serbia

    Ljiljana Gulan & Gordana Milic

  2. Faculty of Science, University of Kragujevac, R. Domanovic 12, Kragujevac, 34000, Serbia

    Jelena M. Stajic & Dragoslav Nikezic

  3. Italian National Institute of Health, Rome, Italy

    Francesco Bochicchio & Carmela Carpentieri

  4. Institute of Nuclear Sciences “Vinca”, University of Belgrade, Belgrade, Serbia

    Zora S. Zunic

Authors
  1. Ljiljana Gulan
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  2. Jelena M. Stajic
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  3. Francesco Bochicchio
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  4. Carmela Carpentieri
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  5. Gordana Milic
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  6. Dragoslav Nikezic
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  7. Zora S. Zunic
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Correspondence to Jelena M. Stajic.

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The sampling was performed according to the recommendations of the International Atomic Energy Agency (IAEA 1989).

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The authors declare that they have no conflict of interest.

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Responsible editor: Georg Steinhauser

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Gulan, L., Stajic, J.M., Bochicchio, F. et al. Is high indoor radon concentration correlated with specific activity of radium in nearby soil? A study in Kosovo and Metohija. Environ Sci Pollut Res 24, 19561–19568 (2017). https://doi.org/10.1007/s11356-017-9538-8

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  • DOI: https://doi.org/10.1007/s11356-017-9538-8

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