Article (Scientific journals)
Radiological monitoring and statistical approach of primordial and anthropogenic radionuclides in surface soil of Mami-water site in the Western Cameroon
Nguelem, Eric J.; Ndontchueng, Maurice; Motapon, Ousmanou et al.
2017In Environmental Earth Sciences, 76, p. 1-14
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Keywords :
BEGe6350 detector; Gamma radiation; Surface soil; Bauxite deposit; Radiological impact; Statistical analysis
Abstract :
[en] The study referred to measure activity concentrations of some primordial radionuclides and anthropogenic of 137Cs in soil samples of Mami-water in the Menoua subdivision, Dschang employing gamma-ray spectrometry-based characterized Broad Energy Germanium (BE6350) detector and a comparison of radiological and safety impact parameters on human due to primordial radioactivity in soil with some internationally approved values. In addition, statistical analysis of primordial radionuclides of 226Ra, 232Th and 40K was performed to evaluate the distribution and the interrelation of radionuclides. Samples were randomly collected from a depth of about 0 to 5 cm from the top surface layer. Each of the sampling points was considered as being overlaid with a grid and subdivided into cells. The observed radioactivity level of 226Ra, 232Th and 40K in the investigated soil samples was compared with some published data available in some countries including Cameroon and observed varying within some reported data of radioactivity in soil from bauxite ore deposit. 235U and 137Cs were found in very few samples with a very low average of activity concentrations. In the majority of the samples, the observed radiological safety parameters seem to be greater than the internationally approved values. Consequently, using bricks made of soil as building materials might lead to an increase in radiation risk for the population. Multivariate statistical analysis of activity concentrations of primordial radionuclides performed showed an asymmetrical distribution with more peaked than Gaussian distribution and relatively flatter distribution of radionuclides in soil. In addition, a good positive interrelation between 226Ra and 232Th was observed and a weak negative one observed between 40K and 226Ra–232Th.
Research center :
The National Radiation Protection Agency, P.O. Box 33732, Yaounde´, Cameroon
Disciplines :
Physics
Author, co-author :
Nguelem, Eric J.;  Fundamental Physics Laboratory, Mathematics, Applied Computer Sciences and Fundamental Physics, University of Douala, P.O. Box 24157, Douala, Cameroon > Ph.D. Student
Ndontchueng, Maurice;  The National Radiation Protection Agency, P.O. Box 33732, Yaounde´, Cameroon > Ph.D.
Motapon, Ousmanou;  Department of Physics, University of Douala, P.O. Box 24157, Douala, Cameroon > Professor
Guembou Shouop, Cébastien Joel  ;  Université de Liège - ULiège > Form. doct. sc. (phys. - Paysage)
Darko, E. O.;  Graduate School of Nuclear and Allied Sciences, P.O. Box AE1, Accra, Ghana
Language :
English
Title :
Radiological monitoring and statistical approach of primordial and anthropogenic radionuclides in surface soil of Mami-water site in the Western Cameroon
Alternative titles :
[en] Radiological monitoring and statistical approach of primordial and anthropogenic radionuclides in surface soil of Mami-water site in the Western Cameroon
Publication date :
02 September 2017
Journal title :
Environmental Earth Sciences
ISSN :
1866-6280
eISSN :
1866-6299
Publisher :
Springer, Berlin, Germany
Volume :
76
Pages :
1-14
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
The National Radiation Protection Agency, P.O. Box 33732, Yaounde´, Cameroon
Available on ORBi :
since 04 September 2017

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