Abrrar A. Ibrahima
, Abdalsattar K. Hashima
and Ali A. Abojasimb
Department of Physics, College of Science, Kerbala University, Karbala, Iraq.
Department of Physics, Faculty of Science, Al Kufa University, Al Najf, Iraq.
Received on: 28/05/2020; Accepted on: 21/07/2020
Abstract: Radioactivity must be studied in soil to see the changes in the doses of human’s
exposure. In this study; natural radioactivity and radiological hazard indices in soil samples
of the Colleges of Agriculture (Al-Hussania site) the Colleges of Medicine (Al-Mothafeen
site) for Karbala Governorate were determined using gamma-ray spectroscopy. The results
showed that the mean value of specific activity (in units of Bq/kg) with a standard error of
238U, 232Th, and 40K in Al- Hussania site was 21.7±7.2, 9.43±3.2 and 335.8±82.2
respectively, while in Al-Mothafeen site were 22.4±8.8, 11.2±3.3 and 333.1±70.7
respectively. Radiation maps of natural radioactivity (238U, 232Th, and 40K) in Al-Hussania
and Al-Mothafeen sites were mapped using geographic information system (GIS)
technology. Moreover, most results in the present study fall within an acceptable level, as
defined by OCDE, UNSCEAR, and ICRP. Therefore, there is no significant radiological
hazard at the site which were studied.
Keywords: Radiological hazard, Natural radioactivity, Soil, NaI (Tl), Gamma-ray, Kerbela