Radionuclides proportion and the assessment of radiological risks of soil and cassava in ika land, delta state, nigeria
Keywords:
Radionuclides, Cassava, Radiological Risk, Transfer Factor, Soil.Abstract
This paper examines the levels of radionuclides and radiological risks of soil and cassava grown in Ika land (Delta State, Nigeria). A total of 20 farm samples were sampled and both cassava and soil samples were sampled, mixed and analyzed using a calibrated NaI (Tl) gamma-ray spectrometer. The soil activity concentrations were 447.39 ug/kg (00K), 6.29 ug/kg (238U), and 3.23 ug/kg (²³²Th). The values in cassava were 400.30 ± 4.46 Bq/kg (40K), 5.18 +0.13 Bq /kg (238U) and 3.03 + 0.04 Bq/kg (²³²Th). The approximate mean absorbed dose rate was 23.51 nGy/h, an effective dose of 0.4 -1/y and a cancer risk of 2.55 x 10 -3 on cassava consumption. Doses that were associated with soil were a little more. In the region, there is no serious radiological health risk in the intake of soil or cassava because all values are less than the recommended safety limits.
