مختصر البحث:
This work aims to measure the concentrations of radionuclides of natural radioactivity
of the three elements (40K, 238U, and 232Th), were determined in 24 soil samples, collected from
Al- Azezia district of Wasit Governorate. They were studied and…
This work aims to measure the concentrations of radionuclides of natural radioactivity
of the three elements (40K, 238U, and 232Th), were determined in 24 soil samples, collected from
Al- Azezia district of Wasit Governorate. They were studied and then evaluated. The standard
sources are used for calibration of radiation activity by gamma spectrometer NaI (TI). The
radioactivity of natural isotopes 40K, 238U and 232Th has been estimated. The results showed the
radio activities of element in this study were within the acceptable standard levels. In addition,
the radium equivalent activity, average air volume, annual effective dose rate and external risk
index were assessed and found to be among the internationally tolerable values. The radioactivity
of nuclides of 40K, 238U and 232Th in Al- Azezia district were calculated. The radioactivity of, 238U ranged from (0. 60±1. 71) to (17. 69 ±4. 70) Bq / kg with an average of (9. 145±3. 20) Bq /
kg, while it was for 232Th ranged from (14. 55±1. 64) to (42. 386+1. 95) Bq / Kg with an average
of (30. 42±2. 31) Bq / Kg and40K ranged from (119. 252+2. 06)to(170. 562+2. 74)Bq / kg with
an average (146. 438+2. 40) Bq / Kg also, it is found that the average of radiological effects like
the radium equivalent (Raeq) ,the absorbed dose Rate (Dr) ,external hazard index (Hex) ,internal
hazard index (Hin), representative gamma hazard index (Iγ) ,the effective dose equivalent
(AEDE) lifetime the excess cancer risk (ELCR) due to natural radioactivity in soil samples for
depth(0-15)cm were (66. 63±5. 37) Bq/Kg and (27. 18±1. 91) nGy/h, (0. 36±0. 01), (0. 69±0. 02),
(0. 48±0. 02). (0. 66 ±0. 02) and (0. 30±0. 01) x10-3respectively, there for no significant
radiological hazard in Al- Azezia district.
