ABSTRACT
This study details the bioaccumulation of natural radionuclides in rice and sweet potatoes samples acquired from selected farmlands of Kebbi State. Ten (10) samples of rice and five (5) samples of sweet potatoes were collected from (15) different farmlands in Kebbi State and analyzed by means of Gamma-rays spectroscopy using Nal(Tl) detector. Activity concentration for 238U,232Thand40K, in soil sample from the rice farms ranged from, 10.19±0.5-19.56±1.98, 13.58±0.43-32.77±3.02 and 205.32±4.73-512.25±36.51Bqkg-1 respectively,with mean values of 14.42±1.31, 20.11±2.28 and 336.90±17.11Bqkg-1 accordingly. Similarly, the range of activity for soils from the sweet potatoes farms varies from 5.76±1.09-15.41±2.36, 9.28±1.34-24.28±2.34 and 220.55±7.773- 431.32±22.65Bqkg-1 respectively, with the average values of 12.32±1.7, 17.43±1.95 and 309.17±13.42Bqkg-1 in accordingly for238U,232Thand40K.These values were found to be lower than the world average values of, 30, 35and 400Bq kg-1 respectively for 238U,232Thand40K in soil, provided by the United Nations Scientific Committee on the Effects of Atomic Radiation. Furthermore, the activity concentration of in rice samples ranged from 0.95±0.02-3.96±0.63, 4.73±0.15-8.65±0.77 and 60.77±1.09-125.59±2.72Bqkg-1 , with the mean value of 2.81±0.21, 6.22±0.42 and 84.27±1.69Bqkg-1 respectively. Similarly, the range of activity in sweet potatoes sample varies from 0.18±0.03-1.79±0.09, 1.01±0.14-5.29±0.41and 81.55±0.15-203.48±2.22Bqkg1 respectively, with the average value of 0.93±0.06, 3.89±0.27 and 116.92±1.32Bqkg-1 respectively. The mean transfer factor (TF) for238U,232Thand40K in rice samples were 0.18, 0.33and 0.26respectively; while in sweet potatoes samples valueof TFfor238U,232Thand40K were 0.59, 0.19 and 0.32respectively. The computed TFof natural radionuclides in the crops were found to be lower than unity which signifies that the bioaccumulation of 238U,232Thand40K is insignificant. The crops considered could be thus not constitutes a source of radiotoxicity to consumers.
BACKGROUND OF THE STUDY
It's no secret that social media has taken over many aspects of mode...
ABSTRACT
This research work, the researcher examined the problems and prospects of marketing of life assurance policies...
STATEMENT OF PROBLEM
Presently, the number of corporate supermarkets operating in Abakaliki metropolis...
Background of the study
Information plays an important role in the corporate world as it can benefit co...
ABSTRACT
The purpose of the study was to determine the influence of socio-economic factors and gender on business education students‟ spe...
Background to the Study
The text of Luke 16:19-31, the parable of the rich man and Lazarus (Λάδα&rho...
ABSTRACT
This study investigated the effect of audit quality on the financial performance of Nigeria Deposit Banks for t...
ABSTRACT
Enrolment pattern and achievement in Chemistry over the years appears not to have reflected the importance of the subject in the...
Abstract
Maintaining steady cost projection on construction projects had been until recently an issue of serious concern...
ABSTRACT
This study basically assessed the effect of problem solving strategy on attitude and academic performance of students in algebra...