Natural Radio Activity Levels in Water and Soil at Kemessie Hot Spring, North-Eastern Ethiopia
A. S. Pradeep,
Hailu Geremew,
Belay Getachew
Issue:
Volume 2, Issue 1, September 2016
Pages:
1-5
Received:
27 May 2016
Accepted:
23 June 2016
Published:
22 August 2016
DOI:
10.11648/j.rst.20160201.11
Downloads:
Views:
Abstract: Natural Radioactivity levels in soil and water supplies remain of interest because of the radiation-induced public health hazards. A large part of the Ethiopian population relies on springs for their drinking water. The present work investigated radioactivity level in soil and water of 12 samples collected from different locations of Kemessie. Concentrations of radionuclides in soils and water samples were determined by gamma-ray spectrometer using a NaI (Tl) detector. The mean activity level of the natural radionuclides 238U, 232Th and 40K are 248.71±20.8, 60.1±3 and 576.46 ± 39.86 Bqkg-1 respectively from soil at Kemessie. The mean activity level of the same radionuclides from water samples are 2.30±0.05, 1.70±0.53 and 17.70±1.53 BqL-1. Also radium equivalent activity, total dose rates, internal and external hazard indices of the soil and water samples under consideration were calculated. The results showed that the average radium equivalent activity, total absorbed dose rate, internal and external hazard indices from soil samples at Kemessie are higher than recommended values. However for water samples all the hazard indices are within safety limits. The paper recommends further studies to estimate internal and external doses from other suspected radiological sources to the population in the region. Such studies can further be extended to many hot springs in this country.
Abstract: Natural Radioactivity levels in soil and water supplies remain of interest because of the radiation-induced public health hazards. A large part of the Ethiopian population relies on springs for their drinking water. The present work investigated radioactivity level in soil and water of 12 samples collected from different locations of Kemessie. Conc...
Show More
Entrance Surface Air Kerma for Skull, Pelvis and Abdomen X-ray Examinations in Some Diagnostic Radiology Facilities in Akwa Ibom State, Nigeria
Imeh Edet Essien,
Samuel OkonInyang,
Nneoyi Egbe
Issue:
Volume 2, Issue 1, September 2016
Pages:
6-12
Received:
2 August 2016
Accepted:
29 August 2016
Published:
30 September 2016
DOI:
10.11648/j.rst.20160201.12
Downloads:
Views:
Abstract: This study estimates entrance surface air kerma(ESAK) for Skull, Pelvis and Abdomen X-ray examinations in selected diagnostic radiology facilities in AkwaIbom State, Nigeria.Eight (8) facilities in eight hospitals were investigated.Six hundred and thirty threeadult patients who presented for these examinations under study were investigated. Gender distribution shows that 263 (41.5%) were males while 370 (58.5%) were females.For skull examination the calculated ESAK range was between 0.07 to 0.57 mGy for males and females patient respectively, ESAK range of 0.03 to 0.28 mGy for males and females respectively in pelvis examination while in abdominal examination the ESAK for male varied between 0.05 to 1.16 mGy and 0.04 to 0.73 mGy for female patients. Mean organ doses indicate that the eyes absorbed a dose of 10.19 mGy,the gonads absorbed the highest dose, uterus and prostate gland absorbed 0.43 mGy and 0.33 mGy respectively. Liver absorbed 1.51 mGy, ovaries, 2.62 mGy, testes, 0.08 mGy. The meaneffective dose (ED) range of 0.02 - 0.11 mSv in skull examination while ED for pelvis and abdomen examinations ranges are (0.07 - 0.52) mSv and (0.78 - 5.37) mSv respectively. The evaluated cancer incidence and mortality risks were very low and minimal.
Abstract: This study estimates entrance surface air kerma(ESAK) for Skull, Pelvis and Abdomen X-ray examinations in selected diagnostic radiology facilities in AkwaIbom State, Nigeria.Eight (8) facilities in eight hospitals were investigated.Six hundred and thirty threeadult patients who presented for these examinations under study were investigated. Gender ...
Show More
