Preliminary Study of Gamma Dose Rate Distribution in the Anomaly of the West-Central Region of Burkina Faso: Use of a Portable Gamma Detector

Beogo, Cedric E.

doi:10.22214/ijraset.2019.2174

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…Previously, studies have been performed in the study area, in order to highlight the uranium anomalies first and then, to determine the gamma dose rate level at one meter above the ground for various depths by using Iden-tiFinder device [2,3]. These works allowed to identify some relatively high background radioactivity points where it has been recommended to perform radioanalytical investigations.…”

Section: Study Areamentioning

confidence: 99%

“…In the study area, the identiFINDER R-400 is turned on to look for a relatively high background coordinate points where gamma dose rate is higher than 100 Sv ⋅ h −1 . Once a point is located, sampling points are randomly chosen around this point and its GPS (model Garmin eTrex 10) coordinates are noted first then, after having assembled the various compartments of the collector, a stratum of soil is taken at the depth of up to 20 cm of the ground [3]. Ten (10) soil samples were taken and analyzed by gammaray spectrometry respectively from the localities of Soula, Tangarce, Pougbonne, Koulfou, Niapsi and Gourgnel (see figure 1).…”

Section: Sample Collection and Preparationmentioning

confidence: 99%

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Assessment of radiological hazards from soil samples in the Northeastern area of Burkina Faso

2022

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The activity concentrations of main naturally occurring radionuclides were determined with the aim of assessing the radiation hazards in the Northeastern part of Burkina Faso. Soil samples were taken and analyzed by the gamma-ray spectrometry method. The ranges of specific activity of 238U, 232Th and40K are $$15.25 \pm 2.59 \, \text{Bq} \cdot {\text{kg}^{-1}}$$ 15.25 ± 2.59 Bq · kg - 1 to $$109.57 \pm 3.21 \, \text{Bq} \cdot {\text{kg}^{-1}}$$ 109.57 ± 3.21 Bq · kg - 1 , $$19.56 \pm 1.65 \, \text{Bq} \cdot {\text{kg}^{-1}}$$ 19.56 ± 1.65 Bq · kg - 1 to $$44.88 \pm 2.49 \text{Bq} \cdot {\text{kg}^{-1}}$$ 44.88 ± 2.49 Bq · kg - 1 and $$125.74 \pm 4.40 \, \text{Bq} \cdot {\text{kg}^{-1}}$$ 125.74 ± 4.40 Bq · kg - 1 to $$705.85 \pm 10.79 \, \text{Bq} \cdot {\text{kg}^{-1}}$$ 705.85 ± 10.79 Bq · kg - 1 respectively. Three high background radioactivity areas have been identified for Uranium, Thorium and Potassium on different places in the study area. The radiological hazards indices vary from $$62.87 \, \text{Bq} \cdot {\text{kg}^{-1}}$$ 62.87 Bq · kg - 1 to $$189.47 \, \text{Bq} \cdot {\text{kg}^{-1}}$$ 189.47 Bq · kg - 1 for the Radium equivalent activity ($$Ra_{eq}$$ R a eq ), $$29.5 \, \eta \text{Gy} \cdot {\text{h}^{-1}}$$ 29.5 η Gy · h - 1 to $$86.65 \, \eta \text{Gy} \cdot {\text{h}^{-1}}$$ 86.65 η Gy · h - 1 for the absorbed dose rate ($$D_R$$ D R ), $$0.18 \, \text{mSv} \cdot {\text{y}^{-1}}$$ 0.18 mSv · y - 1 to $$0.53 \, \text{mSv} \cdot {\text{y}^{-1}}$$ 0.53 mSv · y - 1 for the annual effective dose rate (AEDE), 0.21 to 0.81 for the internal hazard index ($$H_{in}$$ H in ), 0.17 to 0.51 for the external hazard index ($$H_{ex}$$ H ex ), $$1.27 \times 10^{-4}$$ 1.27 × 10 - 4 to $$3.73 \times 10^{-4}$$ 3.73 × 10 - 4 for the Excess Lifetime Cancer Risk (ELCR) and $$209.01{\mkern 1mu} \mu \, 0.18{\mkern 1mu} Sv \cdot y^{{ - 1}}$$ 209.01 μ 0.18 S v · y - 1 to $$594.21 \, \mu \text{Sv} \cdot {\text{y}^{-1}}$$ 594.21 μ Sv · y - 1 for the annual gonadal dose equivalent. The average values of indices are well below their permissible limit. However, at Niapsi the obtained values for absorbed dose rate, annual effective dose rate and excess lifetime cancer risk are little above their permissible limit.

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Section: Study Areamentioning

confidence: 99%

Section: Sample Collection and Preparationmentioning

confidence: 99%

Assessment of radiological hazards from soil samples in the Northeastern area of Burkina Faso

2022

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Radiological Assessment and Statistical Approaches of Natural Radionuclides in Soil Samples Related to Phosphate Ore Activities in the site of Dagbati, Southern Region of Togo

Hazou

Patchali²,

Konzou³

et al. 2022

Water Air Soil Pollut

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Gamma‐Ray Spectrometry of Soil Samples From a Pilot Site of Uranium Anomaly in the Sahel Region of Burkina Faso

Beogo,

Cisse,

Ansong

et al. 2024

Applied and Environmental Soil Science

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The natural radioactivity level has been determined in a pilot site located at Solhan, in the Sahel region of Burkina Faso by means of gamma‐ray spectrometry in soil samples collected at a depth of 40 cm. The activity concentrations are estimated for 238U (range from 181.89 ± 3.62 to 191.37 ± 3.71 Bq·kg−1), 232Th (range from 44.92 ± 2.96 to 48.40 ± 3.25 Bq·kg−1), and 40K (range from 215.11 ± 6.13 to 238.60 ± 6.52 Bq·kg−1). The concentration of 238U present in these soil samples is five times higher than the world average, while the concentration of 232Th is almost the double of the world average. However, the concentration of 40K is particularly low in the study area, being almost half the world average. Additionally, calculations of the Th/K and Th/U ratios indicate the presence of a clay soil and insoluble uranium in the study area. These results made it possible to assess the radiological hazards on the human health. This allowed us to note that the average values of absorbed gamma dose rate in air (124.14 nGy·h−1), internal hazard index (1.24), annual effective dose equivalent (0.76 mSv·y−1), and excess lifetime cancer risk (5.34 × 10−4) are well above the maximum recommended limits. Only the mean values of radium equivalent activity (271.39 Bq·kg−1) and external hazard index (0.73) remain within the acceptable limit.

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Preliminary Study of Gamma Dose Rate Distribution in the Anomaly of the West-Central Region of Burkina Faso: Use of a Portable Gamma Detector

Abstract: Preliminary work on the measurement of natural radioactivity in the uranium anomaly in west-central Burkina Faso has made it possible to determine the horizontal distribution of gamma dose rate in the study area. The values vary between

Cited by 3 publications

References 2 publications

Assessment of radiological hazards from soil samples in the Northeastern area of Burkina Faso

Assessment of radiological hazards from soil samples in the Northeastern area of Burkina Faso

Radiological Assessment and Statistical Approaches of Natural Radionuclides in Soil Samples Related to Phosphate Ore Activities in the site of Dagbati, Southern Region of Togo

Gamma‐Ray Spectrometry of Soil Samples From a Pilot Site of Uranium Anomaly in the Sahel Region of Burkina Faso

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