Direct gamma-ray measurement of different radionuclides in the surface water of Suez Canal

Lasheen, Y. F.; El-Zakla, T.; Seliman, Ayman F.; Abdel-Rassoul, A.A.

doi:10.1051/radiopro:2008002

Cited by 2 publications

(2 citation statements)

References 19 publications

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“…In addition, the high content of carbonate can increase the leaching of uranium with the formation of soluble carbonate complex. The geological nature in some locations may contain a reasonable content of uranium and that be easily leached to the water[25] [26] [27][28]. In general, the average activity concentrations of U in the area under this investigation are close to the reported values 20 -50 Bq/kg for uncontaminated sediments (UNSCEAR, 1988)[29].…”

supporting

confidence: 66%

Precise Determination of Uranium Isotopes in Suez Canal Sediment

Abdellah¹

2019

JASMI

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The streambed sediments of the Suez Canal have been analyzed for determining the natural radionuclides and long-lived radionuclides such as uranium by gamma and alpha spectrometric techniques. The specific activities of 238 U series, 232 Th series and 40 K (Bq/kg) were measured by gamma spectrometry based on Hyper-Pure Germanium detector (HPGe). The average specific activities of 226 Ra( 238 U) series, 232 Th series and 40 K were ranged from 3.04 ± 1.10 to 14.70 ± 1.24 Bq/kg, from 1.12 ± 0.66 to 16.10 ± 1.30 and from 77 ± 4.90 to 350.50 ± 8.90 Bq/kg respectively. The concentration of 238 U and 234 U in the streambed sediments are ranged from 3.24 ± 0.21 to 13.34 ± 0.61 ppm and from 3.18 ± 0.02 to 13.77 ± 0.03 ppm in dry weight respectively. 234 U/ 238 U ratios of the sediments are relatively lower than unity in many locations indicating the preferential uranium leaching process. The results with the high ratios for 234 U/ 238 U were observed in the sediment collected from Port Said. This may be attributed to the sorption of uranium by sediment which has a relatively high content of organic matter. The geochemical behavior of sediment, the chemistry of uranium and the flow rates of water are considered as the most important factors controlling uranium isotopic composition of the streambed sediment. The result of radioactivity in sediment samples can be used to distinguish any future changes due to non-nuclear industries on the Suez Canal area.

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confidence: 66%

Precise Determination of Uranium Isotopes in Suez Canal Sediment

Abdellah¹

2019

JASMI

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“…Radioactive equilibrium permits the determination of 226 Ra concentration by analyzing its decay product concentrations, as illustrated in Eq. ( 1) [11].…”

Section: -Spectrometry With Hpge Detectorsmentioning

confidence: 99%

The influence of method precision on assessing radiological hazards for patients using radium water in balneotherapy

Lemańska,

Isajenko,

Wiatr

et al. 2024

Nukleonika

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The influence of uncertainty on the method adopted for the determination of radioactive radium concentration in water was analyzed due to the assessment of the radiation hazards of balneotherapy. For the calculation, we considered the influence of the bath in radioactive water containing only 226Ra. 226Ra concentration was determined with two γ-spectrometers armed with HPGe detectors with different relative efficiencies. Both spectrometers were energy-efficiency calibrated with a calibration source and based on numerical simulations. Different methods for qualitative γ-spectrum analysis were adopted. The emanation method and the liquid scintillation method were also used. The uncertainty of humans hazard assessment linearly depends on the adopted radiometric method precision. For effective dose calculation, two models were adopted: the model of external exposure proposed by ICRP Publication 144 and the Reference Men model proposed by ICRP Publication 23, respectively.

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Direct gamma-ray measurement of different radionuclides in the surface water of Suez Canal

Abstract: The radioactivity levels of naturally-occurring 238

Cited by 2 publications

References 19 publications

Precise Determination of Uranium Isotopes in Suez Canal Sediment

Precise Determination of Uranium Isotopes in Suez Canal Sediment

The influence of method precision on assessing radiological hazards for patients using radium water in balneotherapy

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