Lithological and seasonal variations in radon concentrations in Cypriot groundwaters

  • Tasoula Kiliari
  • Anastasia Tsiaili
  • Ioannis Pashalidis


The paper presents and discusses radon activity concentrations in Cypriot groundwater systems as a function of the background lithology and seasonal/meteorological conditions using an airborne radon monitoring system (ARM) after separation of radon by out-gassing. Radiometric analysis of groundwater samples obtained from non-contaminated systems showed that radon concentration in groundwaters varies strongly (0.1–10 Bq L−1) depending mainly on the hosting geological matrix but also to lesser degree on atmospheric/meteorological conditions. The associated excess annual dose has been estimated to range between 10−6 and 10−4 mSv y−1, which is an insignificant contribution to the radiation exposure of the Cypriot population caused by airborne radon (0.5 ± 0.4 mSv y−1).


Water-borne radon Radiometry Groundwater Lithology Precipitation Cyprus 



This work was conducted with the financial support of the Cyprus Research Promotion Foundation (Grant No. ANABATHMISI/PAGIO/0308/04) and the University of Cyprus.


  1. 1.
    United Nation Scientific Committee on the Effect of Atomic Radiation: exposure from natural radiation sources. UNSCEAR, United Nations, New York (2000)Google Scholar
  2. 2.
    US EPA: radon in drinking water, 815-F-99-007 (1999)Google Scholar
  3. 3.
    Sarrou I, Paschalidis I (2003) Radon levels in Cyprous. J Environ Radioact 68:269–277CrossRefGoogle Scholar
  4. 4.
    Yasouka Y, Ishikawa T, Tokonami S, Takahashi H, Narazaki Y, Sinogi M (2008) A case study on the effect of water from groundwater sources on indoor radon levels. J Radioanal Nucl Chem 275:165–172CrossRefGoogle Scholar
  5. 5.
    Tzortzis M, Tsertos C, Christofides S, Chrisodoulides G (2003) Gamma-ray measurements of naturally occurring radioactive samples from Cyprous characteristic geological rocks. Radiat Measur 37:221–229CrossRefGoogle Scholar
  6. 6.
    Fokianos K, Sarrou I, Pashalidis I (2005) A two-sample model for the comparison of radiation doses. Chemometr Intell Lab Syst 79:1–9CrossRefGoogle Scholar
  7. 7.
    LaBrecque JJ, Cordoves PR, Rosales PA, Audemard F, Romero G (2001) Monitoring of radon anomalies in the Rio Casanay and a thermal spring near the El Pilar fault shortly after the July 9, 1997 earthquake (Mw = 6.9) in the state of Sucre (Venezuela). J Radioanal Nucl Chem 250:239–245CrossRefGoogle Scholar
  8. 8.
    Kiliari T, Pashalidis I (2008) Determination of aquatic radon by liquid scintillation counting and airborne radon monitoring system. Radiat Measur 43:1463–1466CrossRefGoogle Scholar
  9. 9.
    Smetanova I, Holy K, Muellerova M, Polaskova A (2009) The effect of meteorological parameters on radon concentration in borehole air and water. J Radioanal Nucl Chem 283:101–109CrossRefGoogle Scholar
  10. 10.
    Gruber V, Maringer FJ, Landstetter C (2009) Radon and other natural radionuclides in drinking water in Austria: measurement and assessment. Appl Radiat Isot 67:913–917CrossRefGoogle Scholar
  11. 11.
    Nikolopoulos D, Louizi A (2008) Study of indoor radon and radon in drinking water in Greece and Cyprus: implications to exposure and dose. Radiat Measur 43:1305–1314CrossRefGoogle Scholar
  12. 12.
    Sundal AV, Valen V, Soldal O, Stand T (2008) The influence of meteorological parameters on soil radon levels in permeable glacial sediments. Sci Total Environ 389:418–428CrossRefGoogle Scholar
  13. 13.
    Perrier F, Richon P, Sabroux J-C (2009) Temporal variations of radon concentration in the saturated soil of Alpine grassland: the role of groundwater flow. Sci Total Environ 407:2361–2371CrossRefGoogle Scholar
  14. 14.
    De Francesco S, Pascale Tommasone F, Cuoco E, Verrengia G, Tedesco D (2010) Radon hazard in shallow groundwaters: amplification and long term variability induced by rainfall. Sci Total Environ 408:779–789CrossRefGoogle Scholar
  15. 15.
    Alam MN, Chowdhury MI, Kamal M, Ghose S, Islam MN, Anwaruddin M (1999) Radiological assessment of drinking water of the Chittagong region of Bangladesh. Radiat Prot Dosimetry 82:207–214Google Scholar

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2010

Authors and Affiliations

  • Tasoula Kiliari
    • 1
  • Anastasia Tsiaili
    • 1
  • Ioannis Pashalidis
    • 1
  1. 1.Chemistry DepartmentUniversity of CyprusNicosiaCyprus

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