Determination of Ra-226, Th-232, K-40 and Cs-137 Activities in Soils and Beach Sands and Related External Gamma Doses in Arikli Mineralization Area (Ayvacik/Turkey)


Top G., Örgün Tutay Y., Ayazlı İ. E. , Belivermiş M., Karacık Z., Kampfl G.

Radiation Protection Dosimetry, vol.193, no.3, pp.137-154, 2021 (Journal Indexed in SCI Expanded)

  • Publication Type: Article / Article
  • Volume: 193 Issue: 3
  • Publication Date: 2021
  • Doi Number: 10.1093/rpd/ncab035
  • Title of Journal : Radiation Protection Dosimetry
  • Page Numbers: pp.137-154

Abstract

Uranium mineralization areas may jeopardize public health and surrounding natural life. In the current study for radioactivity and geochemical analyses, 43 soil, 5 rock and 10 beach sand samples were collected in and around Arıklı (Ayvacık, Turkey) uranium mineralization area. Radioactivity levels in the soils (up to Ra-226: 629, Th-232: 240, K-40: 3669 Bq/kg) were found higher than the that of beach sands. Besides, radioactivity of the beach sand samples is found at normal levels (avg: Ra-226: 31, Th-232: 31, K-40: 542 Bq/kg) when compared to worldwide average soil. Dose values indicate that the region have ~three times higher average gamma radioactivity than the corresponding world average although measured gamma doses ranged up to 687 nGy/h. The high measured values are related to uranium mineralization, alteration zones, faults and Arıklı tuff.