Vertical distributions and gamma dose rates of 40 K, 232 Th, 238 U and 137 Cs in the selected forest soils in Izmir, Turkey
Küçük Resim Yok
Tarih
2008
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
This paper presents the results obtained from a radioecological study carried out in the selected forest sites of Izmir, Turkey. The levels of gamma-emitting radionuclides, 40 K, 232 Th, 238 U and 137 Cs, in soils were determined using gamma spectroscopy. The activity profile for 40 K, 232 Th and 238 U exhibits a uniform distribution with respect to depth. The depth distribution of 137 Cs activity was established by fitting the experimental points to an exponential or a Gaussian function. About 42-97% of the 137 Cs deposition was found in the first 10 cm of soil even after 18 y from Chernobyl accident. The dose-rate and annual-effective dose received from external irradiation were quantified. It is indicated that 137 Cs from the fallout plays a less role in external radiation exposures in forest sites of Izmir than in potential exposures from naturally occurring radionuclides accounted for by soil. © The Author 2008. Published by Oxford University Press.
Açıklama
Anahtar Kelimeler
Kaynak
Radiation Protection Dosimetry
WoS Q Değeri
Scopus Q Değeri
N/A
Cilt
131
Sayı
3
