Determination and comparison of uranium and radium isotopes activities and activity ratios in samples from some natural water sources in Morocco

Hakam, Oum Keltoum; Choukri, Abdelmajid; Reyss, Jean-Louis; Lferde, M.

doi:10.1016/s0265-931x(01)00016-9

Cited by 52 publications

(20 citation statements)

References 29 publications

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“…4). A similar pattern has been observed by Hakam et al (2001) in waters collected from wells and springs of Morocco where the 238 U and 226 Ra activities exhibit the same order of magnitude as those found in the Tunis-Manouba plain. However, such values remain, according to Hakam et al (2001), below the maximum contamination levels as stated by the International Commission of Radioprotection.…”

Section: Discussionsupporting

confidence: 83%

“…Radionuclides of the U decay series in groundwaters received attention on the one hand in order to verify whether the resulting radioactivity may pose any hazard (ChruScielewsky and Kamit'lsky, 1999;Pietrzak-Flis et al, 2001;Hakam et al, 2001;Zhuo et al, 2001). On the other hand, several studies tried to describe the behavior of groundwater or detect the sources, using in particular the 234 U/ 238 U activity ratio, which has been found frequently to depart from secular equilibrium (Miekeley et al, 1992;Osmond and Cowart, 1992).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Distribution of uranium and radium isotopes in an aquifer of a semi-arid region (Manouba-Essijoumi, Northern Tunisia)

Added

Mammou

Fernex

et al. 2005

Journal of Environmental Radioactivity

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Section: Discussionsupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Distribution of uranium and radium isotopes in an aquifer of a semi-arid region (Manouba-Essijoumi, Northern Tunisia)

Added

Mammou

Fernex

et al. 2005

Journal of Environmental Radioactivity

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“…Their chemical compositions evolve from calcic and magnesian chloro-bicarbonated to sodic bicarbonated. Higher radium activity concentrations were also reported for the thermo mineral springs in Morocco (up to 3.7 Bq L − 1 ; Hakam et al, 2001) and Tunis (up to 3.9 Bq L − 1 ; Labidi et al, 2002). A high level of 226 Ra of 5.7 Bq L − 1 caused by high temperature of spring waters flowing through rocks with enhanced uranium content was reported for the spring water collected in Mexico (Villalba et al, 2006).…”

Section: Resultsmentioning

confidence: 59%

Spatial distribution of the 226Ra activity concentrations in well and spring waters in Serbia and their relation to geological formations

Dragović

Janković-Mandić

Dragović

et al. 2012

Journal of Geochemical Exploration

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“…8 In central region of Cameroon, there exists two main seasons. The dry season, this covers 91 days and the rainy season which covers 274 days.…”

Section: Resultsmentioning

confidence: 99%

Measurement of radium isotope activities in reservoir and spring water in the Cameroon Central Region

Marie

Hakam

Choukri

2015

Int J Cancer Ther Oncol

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Purpose: To determine the activities of 226 Ra and 228 Ra in the reservoir and spring water samples respectively during the dry and the rainy seasons; and to calculate the annual intake Ii (Bq/y) for each type of water samples. Methods: Using both well calibrated Canberra NaI(Tl) and HPGe detector systems, it was possible to determine the average specific activity of those radium's isotopes in water samples which were collected in 2010, from Reservoirs and springs in Cameroon central region including Ngoaekelle, Minboman, Etoudi and Njoungolo. Results: The average specific activity values obtained for 226 Ra and 228 Ra in reservoir water samples were 8.76 ± 3.50 BqL -1 and 0.64 ± 0.28 BqL -1 during the dry season and, 8.24 ±3.48 BqL -1 and 0.58 ± 0.24 BqL -1 during the rainy season respectively. For spring water, the average values were 3.50 ± 0.63 BqL -1 and below 0.0002 BqL -1 (detection limit of 228 Ra in water) during the dry season; 3.20 ± 0.60 BqL -1 and below 0.0002 BqL -1 (detection limit of 228 Ra in water) during the rainy season respectively. Assuming that the volume of drinking water for adult is 2.5 litres per day, the average annual intakes of 226 Ra and 228 Ra through ingestion in these water samples were 7702 Bq/y and 575 Bq/y for reservoir water; 2993 Bq/y and < 0.25 for spring water respectively. Conclusion: The results have indicated that the annual intake by the population of sampling region as a result of 226 Ra in these drinking waters is 7.7 × 10 3 Bq/y more than the maximum limit fixed by ICRP which is 7 × 10 3 Bq/y. There is a need for regular monitoring the radiological water quality aspect in this region.

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Determination and comparison of uranium and radium isotopes activities and activity ratios in samples from some natural water sources in Morocco

Cited by 52 publications

References 29 publications

Distribution of uranium and radium isotopes in an aquifer of a semi-arid region (Manouba-Essijoumi, Northern Tunisia)

Distribution of uranium and radium isotopes in an aquifer of a semi-arid region (Manouba-Essijoumi, Northern Tunisia)

Spatial distribution of the 226Ra activity concentrations in well and spring waters in Serbia and their relation to geological formations

Measurement of radium isotope activities in reservoir and spring water in the Cameroon Central Region

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