Preliminary studies on 222Rn concentration in ground water from selected areas of the Accra metropolis in Ghana

Darko, E. O.; Adukpo, O. K.; Fletcher, J. J.; Awudu, A. R.; Otoo, Francis

doi:10.1007/s10967-009-0378-y

Cited by 29 publications

(14 citation statements)

References 10 publications

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“…At the present time, Ghana does not have national guidelines specifying the acceptable radon levels in both workplaces and dwellings but have been using international action levels and limits. Most studies on radon in Ghana have focused on water, soil and buildings but not in offices and laboratories (Andam, 1994;Darko et al, 2010;Ansre et al, 2018). The Ghana Atomic Energy Commission (GAEC) houses numerous laboratories and offices with staff strength of almost 700 people.…”

Section: Introductionmentioning

confidence: 99%

Seasonal indoor radon studies in buildings of Accra Metropolis of Greater Accra region of Ghana

et al. 2018

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Indoor radon concentration for annual, rainy and dry season have been studied in 228 buildings which includes bedroom, kitchen, sitting room, laboratories and offices in Accra metropolis of Greater Accra of Ghana. The passive radon CR-39 SSNTD was used for this study. The cumulative frequency distribution, normalizing Q-Q plots, Kolmogorov-Smirnov and Shapiro-Wilk statistical test showed that the result of both workplaces and dwellings are not normally distributed. The strong positive correlation between the two seasons occurred at 95% confidence level with 2 tailed. The rainy season recorded highest coefficient variation of r2 = 0.982. Statistical analysis of median (39.3), AM (103.4), GM (57.9) and GSD (3.2) for rainy season were greater than that of the dry season of median (26.9), AM (88.2), GM (49.2) and GSD (2.8) respectively. Rainy season was found to contain high radon concentrations than the dry season for all the studied locations. In general, workplace had radon concentration far greater than dwellings. The results obtained from this study ranged between 13.6 to 533.7 Bq/m3, out of which 9.6%, 12.7% and 3.5% were found to be greater than action levels proposed by WHO, EC and ICRP.

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Section: Introductionmentioning

confidence: 99%

Seasonal indoor radon studies in buildings of Accra Metropolis of Greater Accra region of Ghana

et al. 2018

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“…The recoil process is a physical effect which occurs when ionizing radiation is emitted, causing the mobilization of a radioactive element from its initial position. The ionizing radiation can be transferred directly to the pore space in a rock and cause a radionuclide to lose its position in the crystalline structure of the mineral and be released into underground water [6] [7]. These processes can increase the concentration of radionuclides in drinking water to levels that are harmful to humans when ingested.…”

Section: Sources Of Radionuclides In Drinking Watermentioning

confidence: 99%

Determination of Radionuclides in Borehole Water in the Adenta Municipality of Greater Accra Region

Agyeman¹,

Glover²,

Nyarko³

et al. 2019

OALib

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This study was carried out in the Greater Accra Region of Ghana mainly in the Adenta Municipality to determine the baseline radioactivity levels of naturally occurring radioactive material of water in boreholes using gamma spectrometry. According to WHO, the recommended limit of total committed annual effective dose should be 100 uSv/yr for radioactive materials such as 40 K, 226 Ra and 232 Th, which will be the subject of interest in the borehole water in the Adenta Municipality. Their average total committed annual effective dose due to intake was estimated to be 33.86 µSv/yr, respectively, which is far below the WHO recommended value. The average activity concentrations of 40 K, 226 Ra and 232 Th in the fifth teen boreholes were measured as follows, 8.76 Bq/L ± to 1.28 Bq/L for 40 K, 0.82 Bq/L ± to 0.15 Bq/L for 226 Ra and 0.69 Bq/L ± to 0.11 Bq/L for 232 Th respectively. Two of the boreholes exceeded the WHO recommended values for total committed annual effective dose. These are BW 2 and BW 7 with recording values of 138.41 and 131.21 respectively. The results from this study will serve as baseline data for further research in the Adenta Municipality.

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“…It is used in various aspects of daily lives that include power generation, agriculture and domestic activities (ASTM, 1999). It is therefore important for water to be free from chemical, microbiological and radiological contamination (Darko, et al, 2010). Radon is a naturallyoccurring element that contributes to radiological contamination of drinking water and poses a health risk.…”

Section: Introductionmentioning

confidence: 99%

“…Radon radioactive gas Http://www.granthaalayah.com ©International Journal of Research -GRANTHAALAYAH [16] is formed when uranium or radium decays. It escapes from the earth's crust through cracks and crevices in the bedrock and either dissolves in ground water or seeps through foundation cracks into the environment/human habitations (Darko, et al, 2010;Farai and Sanni, 1992). Radon is a colourless, odourless radioactive gas that is a daughter element in the decay chain of uranium 238 (Galan, et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Determination of Radon- 222 Concentrations and Effective Dose by Ingestion in Ground and Surface Water Sources From Idah and Environs, Nigeria

Gyuk

Aruwa

Dogara

et al. 2017

Int. J. Res. Granthaalayah

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Groundwater (well and borehole) and surface water samples from various locations of Idah and environs including have been investigated for their 222Rn concentrations by Liquid Scintillation Counter (Packard Tri-Carb LSA 1000TR) manufactured by Packard Instrument Company. The mean concentration ranges from 4.70 Bq/L to 24.0 Bq/L for borehole samples, 5.70 Bq/L to 13.60 Bq/L and 1.90 Bq/L to 4.50 Bq/L for well and surface water respectively were found. The average mean concentration of 10.23 Bq/L and 12.28 Bq/L were found for borehole and well waters respectively which were above the maximum contaminant limit of 11.1 Bq/L set by USEPA and 10.0 Bq/L by UNSCEAR and WHO. The average mean concentration of 3.05 Bq/L was found for surface water making it safe drinking and domestic use. The average total effective dose by ingestion was found to be 0.0412mSv/y which is lower than the recommended limit for members of the public of 1.0 mSv/y and intervention level of 3 – 10 mSv/y by ICRP.

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Preliminary studies on 222Rn concentration in ground water from selected areas of the Accra metropolis in Ghana

Cited by 29 publications

References 10 publications

Seasonal indoor radon studies in buildings of Accra Metropolis of Greater Accra region of Ghana

Seasonal indoor radon studies in buildings of Accra Metropolis of Greater Accra region of Ghana

Determination of Radionuclides in Borehole Water in the Adenta Municipality of Greater Accra Region

Determination of Radon- 222 Concentrations and Effective Dose by Ingestion in Ground and Surface Water Sources From Idah and Environs, Nigeria

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