Determination of natural radioactivity levels in soil and travertine of the region of Tokat and Sivas, Turkey

  • I. Yigitoglu
  • E. Eser
  • B. Cetin
  • S. Kilicaslan
  • F. Oner
  • I. Akkurt
  • G. Gursoy
  • S. Yamcicier
  • H. Koç
Part of the following topical collections:
  1. Geo-Resources-Earth-Environmental Sciences


In this study, the environmental radioactivity measurements for Tokat and Sivas provinces in the northeast of Turkey were performed. Using gamma ray spectrometry, the activity concentrations of natural radionuclides in soil and travertine samples (232Th, 226Ra, and 40K) were determined. The annual effective dose equivalent, the absorbed doses rate in air, the radium equivalent, and the external hazard index were obtained from these activities. The activity concentrations vary from 9.09 to 17.04 Bq kg−1 for 232Th, from 36.53 to 76.95 Bq kg−1 for 226Ra, and from 216.56 to 576.59 Bq kg−1 for 40K in soil samples. The activity concentrations in travertines vary from 15.99 to 21.01 Bq kg−1 for 232Th, from 19.89 to 67.71 Bq kg−1 for 226Ra, and from 179.89 to 314.43 Bq kg−1 for 40K. The average dose rate in air for soil and travertine samples was 43.41 and 41.05 nGy h−1 respectively. The obtained results are presented and compared with other studies, and the results of this study are lower than the international recommended value (55 nGy h−1) given by UNSCEAR ( 2000). The results show that the region has a background radiation level within the natural limits.


Natural radioactivity Soil and travertine Gamma spectrometer 


Funding information

This work is supported by Gaziosmanpasa University Scientific Research Projects Department (BAP) under project no. 24/2013.


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Copyright information

© Saudi Society for Geosciences 2018

Authors and Affiliations

  • I. Yigitoglu
    • 1
  • E. Eser
    • 2
  • B. Cetin
    • 3
  • S. Kilicaslan
    • 1
  • F. Oner
    • 4
  • I. Akkurt
    • 5
  • G. Gursoy
    • 6
  • S. Yamcicier
    • 7
  • H. Koç
    • 8
  1. 1.Faculty of Arts and Sciences, Department of PhysicsGaziosmanpaşa UniversityTokatTurkey
  2. 2.Polatlı Faculty of Arts and Sciences, Department of PhysicsGazi UniversityPolatlıTurkey
  3. 3.Faculty of Arts and Sciences, Department of PhysicsAmasya UniversityAmasyaTurkey
  4. 4.Faculty of Education, Department of Computer and Instructional Technology EducationAmasya UniversityAmasyaTurkey
  5. 5.Faculty of Arts and Sciences, Department of PhysicsSuleyman Demirel UniversityIspartaTurkey
  6. 6.Health Services Vocational School, Medical Services and Technical DepartmentAhi Evran UniversityKırşehirTurkey
  7. 7.Health Services Vocational School, Health Care ServicesAhi Evran UniversityKırşehirTurkey
  8. 8.Faculty of Engineering and Architecture, Electrical and Electronics Engineering DepartmentMuş Alparslan UniversityMuşTurkey

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