Preliminary investigation of naturally occurring radionuclide in some six representative cement types commonly used in Cameroon as building material

Moyo, Maurice Ndontchueng; Nguelem, Eric Jilbert Mekongtso; Simo, Augustin; Njinga, Raymond Limen; Beyala, J. F; Kryeziu, Driton R.

doi:10.4103/0972-0464.128871

Cited by 6 publications

(2 citation statements)

References 17 publications

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“…Each sample was prepared in beakers and closed with caps to ensure that the radon gas was confined in the volume and plastic tape was wrapped over the caps so that the daughter radionuclide would also remain in the sample before measurement. This is important to achieve secular equilibrium as the activity of uranium and thorium series depends on their daughter's radioactivity (Nguelem et al, 2013;Guembou Shouop et al, 2017). Hahotoé phosphate mining site.…”

Section: Sampling and Samples Preparationmentioning

confidence: 99%

Transfer from Soil to Grass and Statistical Analysis of Natural Occurring Radionuclides in Soil from Phosphate Mining and Processing Sites in Maritime Region of Togo.

Hazou

Zorko

Dzagli

et al. 2021

Preprint

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Natural radionuclides activity concentrations of 226Ra, 228Ra, and 40K in soil and grass samples, statistical analysis of these radionuclides and transfer factors (TFs) from soil to the grass were carried out from phosphate mining and processing sites in southern areas of Togo using gamma-ray spectrometry-based High Purity Germanium (HPGe) detector. The average activity concentrations of 226Ra, 228Ra, and 40K were found within the range usually measured worldwide. Statistical analysis was done by investigating the skewness, the kurtosis, and the density distribution of radionuclides in the study areas. Both skewness and kurtosis displayed that the activity concentrations of soil and grass samples in the dischargement waste site (Kpémé) and mining site (Hahotoé) exhibited slightly positively skewed, negatively skewed, leptokurtic, and platykurtic distributions. The TFs for 226Ra, 228Ra, and 40K from dischargement waste soil to grass were evaluated. The average transfer factors of 226Ra, 228Ra, and 40K in the phosphate processing area were found to be 0.16, 0.32, and 8.42, respectively. 226Ra and 228Ra TFs values were found to within the limit of worldwide measure values while that of 40K was to be larger than the values measured in other countries. The average TF value of 8.42 for 40K was 8 times higher than the average value of unity, showing its large intake by vegetables. The high TFs for 40K could be explained by the extensive application of phosphate fertilizers to soils when growing vegetables.

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Section: Sampling and Samples Preparationmentioning

confidence: 99%

Transfer from Soil to Grass and Statistical Analysis of Natural Occurring Radionuclides in Soil from Phosphate Mining and Processing Sites in Maritime Region of Togo.

Hazou

Zorko

Dzagli

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

Section: Sampling and Samples Preparationmentioning

confidence: 99%

Transfer from soil to grass and statistical analysis of naturally occurring radionuclides in soil from phosphate mining and processing sites in Maritime Region of Togo

et al. 2021

View full text Add to dashboard Cite

Natural radionuclides activity concentrations of 226 Ra, 228 Ra, and 40 K in soil and grass samples, statistical analysis of these radionuclides and transfer factors (TFs) from soil to the grass were carried out from phosphate mining and processing sites in southern areas of Togo using gamma-ray spectrometry-based High Purity Germanium (HPGe) detector. The average activity concentrations of 226 Ra, 228 Ra, and 40 K were found within the range usually measured worldwide. Statistical analysis was done by investigating the skewness, the kurtosis, and the density distribution of radionuclides in the study areas. Both skewness and kurtosis displayed that the activity concentrations of soil and grass samples in the dischargement waste site (Kpémé) and mining site (Hahotoé) exhibited slightly positively skewed, negatively skewed, leptokurtic, and platykurtic distributions. The TFs for 226 Ra, 228 Ra, and 40 K from dischargement waste soil to grass were evaluated. The average transfer factors of 226 Ra, 228 Ra, and 40 K in the phosphate processing area were found to be 0.16, 0.32, and 8.42, respectively. 226 Ra and 228 Ra TFs values were found to within the limit of worldwide measure values while that of 40 K was to be larger than the values measured in other countries. The average TF value of 8.42 for 40 K was 8 times higher than the average value of unity, showing its large intake by vegetables. The high TFs for 40 K could be explained by the extensive application of phosphate fertilizers to soils when growing vegetables.

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Natural radioactivity in building materials, indoor radon measurements, and assessment of the associated risk indicators in some localities of the Centre Region, Cameroon

Nkoulou

Manga

Saïdou

et al. 2022

Environ Sci Pollut Res

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Preliminary investigation of naturally occurring radionuclide in some six representative cement types commonly used in Cameroon as building material

Cited by 6 publications

References 17 publications

Transfer from Soil to Grass and Statistical Analysis of Natural Occurring Radionuclides in Soil from Phosphate Mining and Processing Sites in Maritime Region of Togo.

Transfer from Soil to Grass and Statistical Analysis of Natural Occurring Radionuclides in Soil from Phosphate Mining and Processing Sites in Maritime Region of Togo.

Transfer from soil to grass and statistical analysis of naturally occurring radionuclides in soil from phosphate mining and processing sites in Maritime Region of Togo

Natural radioactivity in building materials, indoor radon measurements, and assessment of the associated risk indicators in some localities of the Centre Region, Cameroon

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