ABSTRACT
Radiological contaminations of the human environment due to anthropogenic activities have been associated with significant human health challenges. Forty surface soil samples collected at random from Gababiyu artisanal gold mining site in Minna were assessed for their radiological contents using gamma spectrometric technique which employs NaI (Tl) detector. Radiological hazard parameters were also computed from the measured activity concentrations in order to assess the level of exposure of the miners and the public to ionising radiation. Specific activities of 226Ra, 232Th and 40K ranged from 10.27±2.88 to 152.60±3.80 Bq.kg-1 , 32.67±1.93 to 185.90±6.06 Bq.kg-1 and 35.18±1.45 to 947.50±7.51 Bq.kg-1 respectively, with mean values of 65.06±4.20, 87.63±2.89 and 267.94±4.29 Bq.kg-1 in sequence. The mean values for 226Ra and 232Th were above the UNSCEAR stipulated global averages. Thus, indicating that the soil bears significant concentrations of 226Ra and 232Th. Computed average absorbed dose rate at 1 m above ground was 94.16 nGy.h-1 with corresponding mean annual dose equivalent of 0.22 mSv.y-1 and average excess lifetime cancer risk of 0.76×10-3 . These values were all below respective safety limits set by UNSCEAR. The results of this investigation therefore indicated minimal radiological risk associated with artisanal gold mining activities in the studied area.
Background of the Study
Performance measurement systems are crucial for monitoring and enhancing the efficiency and profita...
ABSTRACT
In this research work titled “Business combinations and financial performance of banks i...
ABSTRACT
The main objective of this study is to ascertain the efficiency of internal control system as...
Background of the Study
Adult education has emerged as a critical factor in fostering economic development and civic respon...
Background of the Study
Measles remains one of the leading causes of morbidity and mortality among children in many develo...
Background of the Study
Automated Teller Machines (ATMs) are critical for ensuring round‑the‑clock access to banking servic...
Background of the Study
Multilingual instruction has emerged as a progressive educational practice, parti...
Background of the Study
Preterm birth, defined as birth before 37 weeks of gestation, remains a signifi...
Climate is dynamic in the sense that analysis of some relevant climate elements revealed that natural forces have enforced change over centuries (C...
Background of the Study
Corporate Social Responsibility (CSR) investments have increasingly been recognized as vital for...