1887

Abstract

Summary

The concentrations of equivalent eU, eTh, K% and dose rate values were measured using in-situ gamma-ray survey in order to map rapidly the surface geology of the Sarıçiçek pluton and its surrounding area. Gamma-ray spectrometric data were collected with a 512-channel portable gamma-ray spectrometer (NaI (Tl) cyrstal) at 265 points in which duration for a single point measurement is 5 minutes. The average activity concentrations of 238U, 232Th, 40K and dose rate obtained in this study are 38.97 Bq/kg, 50.56 Bq/kg, 935.267Bq/kg and 88.78 nGy/h, respectively. Although distinct radioactive anomalies were found in the studied area, the radiometric values showed some minor variations with slightly higher values than the normal level. As the result of this study, the average values of the absorbed gamma dose rate in air, radium equivalent activity, annual effective dose rate and the external hazard index were also calculated and examined in terms of radiologic hazard in this area. Consequently, all of the radiometric parameters are in good agreement with the regional surface geology of the Sarıçiçek pluton and its surrounding formation and there is no significant radiologic risk for humans and environment in and around this area.

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/content/papers/10.3997/2214-4609.201414116
2015-10-05
2024-04-19
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References

  1. Abd El-mageed, I.A., El-Kamel, H.A., Abbady, A.,
    [2011] Assessment of natural and anthropogenic radioactivity levels in rocks and soils in the environments of Juban town in Yemen. Radiat. Phys. Chem., 80, 710–715.
    [Google Scholar]
  2. Birch, F.
    [1954] Heat from radioactivity. In: Faul, H. (Ed.) Nuclear Geology. John Wiley and Sons Inc., New York.
    [Google Scholar]
  3. Canbaz, B., Çam, N.F., Yaprak, G. and Candan, O.,
    [2010] Natural radioactivity (226Ra, 232Th and 40K) and assessment of radiological hazards in the Kestanbol granitoid, Turkey. Radiation Protection Dosimetry, 141, 192–198.
    [Google Scholar]
  4. El-Taher, A., Uosif, M.A.M., Orabi, AA.
    [2007] Natural radioactivity levels and radiation hazard indices in granite from Aswan to Wadi El-Allaqi southeastern desert, Egypt. Radiat. Prot. Dosim., 124, 148–154.
    [Google Scholar]
  5. Gedik, A., Ercan, T., Korkmaz, S. and Karataş, S.
    [1992] Rize-Findikli Çamlihemşin arasinda (Doğu Karadeniz) yer alan magmatik kayaçlarin petrolojisi ve Dogu Pontidlerde’ki bölgesel yayilimlari [Petrology of the magmatic rocks around Rize-Findikli Çamlihemşin (Eastern Black Sea) and their distribution at the Eastern Pontides]. Geological Bulletin of Turkey, 35, 15–38.
    [Google Scholar]
  6. GF INSTRUMENTS
    GF INSTRUMENTS [2009] Gamma Surveyor User Guide v1.3.
    [Google Scholar]
  7. International Atomic Energy Agency (IAEA)
    International Atomic Energy Agency (IAEA) [1974] Instrumentation for uranium and thorium exploration. Technical reports series, 158, Vienna.
    [Google Scholar]
  8. International Atomic Energy Agency (IAEA)
    International Atomic Energy Agency (IAEA) [1989] Construction and Use of Calibration Facilities for Radiometric Field Equipment. Technical Reports Series, 309, Vienna.
    [Google Scholar]
  9. International Atomic Energy Agency (IAEA)
    International Atomic Energy Agency (IAEA) [2003] Guidelines for Radioelement Mapping Using Gamma Ray Spectrometry Data. Technical Reports Series, 1363, Vienna.
    [Google Scholar]
  10. Karslı, O., Aydın, F., Uysal, İ. and Sadıklar, M.B.
    [2008]. Magma Interaction Processes Inferred from Fe-Ti Oxide Compositions in the Dölek and Sarıçiçek Plutons, Eastern Turkey. Turkish Journal of Earth Sciences (Turkish J. Earth Sci.), 17, 297–315.
    [Google Scholar]
  11. Tzortzis, M., Tsertos, H., Christofides, S. and Christodoulides, G.
    [2003] Gamma-ray measurements of naturally occurring radioactive samples from Cyprus characteristic rocks. Radiat. Meas. 37, 221–229.
    [Google Scholar]
  12. Tzortzis, M. and Tsertos, H.
    [2004] Determination of thorium, uranium and potassium elemental concentrations in surface soils in Cyprus. J. Environ. Radioact., 77, 325–338.
    [Google Scholar]
  13. UNSCEAR, United Nations Scientific Committee on the Effects of Atomic Radiation
    UNSCEAR, United Nations Scientific Committee on the Effects of Atomic Radiation, [2000] Sources and Effects of Ionizing Radiation. Report to General Assembly with Scientific Annexes. United Nations, New York.
    [Google Scholar]
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