Natural radioactivity measurements and dose calculations to the public: Case of the uranium-bearing region of Poli in Cameroon

Saïdou, -; Bochud, François; Baechler, Sébastien; Moïse, Kwato Njock; Merlin, Ngachin; Froidevaux, Pascal

doi:10.1016/j.radmeas.2010.11.009

Cited by 28 publications

(16 citation statements)

References 36 publications

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“…Many studies have been carried out world widely to determine the level of natural radioactivity. As far as Cameroon is concerned, in the uranium region of Poli in northern Cameroon, Saïdou et al [12][13][14] measured natural radioactivity and assessed total dose received by the public. Their result showed that the inhalation of radon and the ingestion of 210 Pb and 210 Po contained in the foodstuffs constitute the most contribution to the annual effective dose.…”

Section: Radioisotopesmentioning

confidence: 99%

Natural Radioactivity Measurements in Soil, External Dose and Radiological Hazard Assessment in the Uranium and Thorium Bearing Region of Lolodorf, Cameroon

et al. 2018

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The level of natural radioactivity has been evaluated for soil samples collected from the uranium and thorium bearing region of Lolodorf in the southwestern Cameroon. Specific activities of 226 Ra, 232 Th and 40 K in these soil samples were determined using γ-ray spectrometry with sodium iodide (NaI(Tl)) detector. The specific activities for the whole study areas where consist of five inhabited localities were compared with the world average and permissible recommended limits. Specific activities of 226 Ra, 232 Th and 40 K ranged from 5-120, 2-170 and 50-253 Bq kg −1 , with average values of 22±2, 37±6 and 98±7 Bq kg −1 , respectively. The average values of absorbed dose rate in air (D a), external effective dose (E ext), radium equivalent activity (Ra eq), external hazard index (H ext) and representative level index (I γ) were 36.7±5.0 nGy h −1 , 0.29±0.04 mSv y −1 , 83±14 Bq kg −1 , 0.22±0.03 and 0.58±0.10 respectively, which, were lower than their recommended values. Although this study shows that radioactivity level is normal in the study areas, except some areas where the uranium and potassium anomalies had been found by previous investigations, the possibility of developing cancer cases among individuals must not be neglected. The soil from the sampling areas in this study can be used safely as building materials apart from some points within Ngombas and Kribi.

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Section: Radioisotopesmentioning

confidence: 99%

Natural Radioactivity Measurements in Soil, External Dose and Radiological Hazard Assessment in the Uranium and Thorium Bearing Region of Lolodorf, Cameroon

et al. 2018

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“…Uncertainty assessment of activity concentrations is well described in Saïdou et al (2007Saïdou et al ( , 2008. More details about the sampling and conditioning, characteristics, energy and efficiency calibration of the above detectors can be found in references (Saïdou et al, 2007(Saïdou et al, , 2008(Saïdou et al, , 2011Ele Abiama et al, 2010).…”

Section: Radioactivity In Soilmentioning

confidence: 99%

“…Thus, this radiation risk assessment should be cautiously considered because the calculations done here with the ICRP data are just to have a broad overview of the risk. (Saïdou et al, 2011(Saïdou et al, , 2015Ele Abiama et al, 2012).…”

Section: Radiation Risk Due To Natural Radioactivitymentioning

confidence: 99%

“…There have been many surveys to determine the background levels of radionuclides in soil in Cameroon. Saïdou et al (2011) reported radioactivity measurements and a total dose assessment in the uranium region of Poli in Northern Cameroon. They concluded that most of the total dose assessed is attributable to the intake of radon and high levels of 210 Po and 210 Pb contained in vegetables, food items which constitute an important part of the diet in Northern Cameroon.…”

Section: Introductionmentioning

confidence: 99%

“…These regions were selected due to the uranium and oil deposits occurring in these areas. Data on activity concentrations and radiation doses come from previously reported studies on the above regions (Saïdou et al, 2011(Saïdou et al, , 2014(Saïdou et al, , 2015Ele Abiama et al, 2010 and will be used to determine the corresponding radiation risk. The specific case of indoor radon exposure will particularly be considered.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Comparative study of natural radiation exposure to the public in three uranium and oil regions of Cameroon

Abiama

Tokonami

2015

Radioprotection

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The objective of this work is to compare natural radiation exposure to the public in the uranium regions of Poli and Lolodorf and the oil region of Bakassi in Cameroon. From some reported studies on natural radiation exposure in Cameroon, the radiation risk was determined. Activity concentrations, external radiation, and the ingestion and inhalation dose of each of the above regions were compared with the world average value given by the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR). From the total dose, the radiation risk of each region was calculated and compared with the world average value. The specific case of indoor radon exposure was particularly considered. The radiation risk attributed to the indoor radon exposure was compared with the lung cancer rate in Cameroon as given by the International Agency for Research on Cancer (IARC). In conclusion, the local risks are elevated but not necessarily representative of the country as a whole.

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Natural radioactivity survey on soils originated from southern part of Thailand as potential sites for nuclear power plants from radiological viewpoint and risk assessment

Kritsananuwat

Arae²,

Fukushi

et al. 2015

J Radioanal Nucl Chem

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Natural radioactivity measurements and dose calculations to the public: Case of the uranium-bearing region of Poli in Cameroon

Cited by 28 publications

References 36 publications

Natural Radioactivity Measurements in Soil, External Dose and Radiological Hazard Assessment in the Uranium and Thorium Bearing Region of Lolodorf, Cameroon

Natural Radioactivity Measurements in Soil, External Dose and Radiological Hazard Assessment in the Uranium and Thorium Bearing Region of Lolodorf, Cameroon

Comparative study of natural radiation exposure to the public in three uranium and oil regions of Cameroon

Natural radioactivity survey on soils originated from southern part of Thailand as potential sites for nuclear power plants from radiological viewpoint and risk assessment

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