Determination of uranium in Egyptian graniteic ore by gamma, alpha, and mass spectrometry

Khattab, Mahmoud R.; Tuovinen, Hanna; Lehto, Jukka; Assay, I.E. El; Feky, M. G. El; Mohamed, Ahmed Mokhtar

doi:10.1080/10739149.2016.1242078

Cited by 27 publications

(10 citation statements)

References 8 publications

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“…Both 238 U and 232 Th in soil and plants could be determined using non-destructive gamma spectrometry techniques as given by many other authors [1,25].…”

Section: Transfer Factor (Tf) For Plantsmentioning

confidence: 99%

“…Naturally occurring radioelements are generally present in soils and plants, but their contents in plants are in most cases very low. Nevertheless, ores of some sites show elevated levels of uranium and thorium [1,2]. Radionuclide behavior in soils and bedrock with emphasis on uranium and thorium is very important issue from an environmental point of view [3].…”

Section: Introductionmentioning

confidence: 99%

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Distribution and Bioaccumulation of Uranium and Thorium in Natural Soil and Wild Plants of Wadi El-Missikat, Central Eastern Desert, Egypt

Ebyan

2019

Arab Journal of Nuclear Sciences and Applications

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Uranium and thorium concentrations were determined in soil and wild plant samples collected from Wadi El Missikat, Central Eastern Desert, Egypt. The U and Th contents are similar to those in Gebel Qattar soil (North Eastern Desert, Egypt), but higher than their corresponding levels in the Earth's crust. The results obtained indicate that the Fagonia boveana plant uptakes and accumulates both elements, but uptakes of Th is higher than U. Fagonia sp. can absorb and accumulate uranium element with 150 times more than the average of world plant uptake. The Zilla spinosa plant was also found to be hyper-accumulator for U and Th and can absorb and accumulate uranium with 48 times more than the average world plant. Analyses of the studied plants show that they are considered hyper-accumulators for uranium and thorium and could be used as candidates for exploration for these elements and phytoremediation of radionuclide-contaminated soils.

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“…Both 238 U and 232 Th in soil and plants could be determined using non-destructive gamma spectrometry techniques as given by many other authors [1,25].…”

Section: Transfer Factor (Tf) For Plantsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Distribution and Bioaccumulation of Uranium and Thorium in Natural Soil and Wild Plants of Wadi El-Missikat, Central Eastern Desert, Egypt

Ebyan

2019

Arab Journal of Nuclear Sciences and Applications

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“…Then deionized water was added for dilution and stirring continued for more 30 min. Thereafter, 5% H 2 O 2 was added to the mixture until the yellow colure of the mixture appear which indicating the full oxidation of the graphite [39].…”

Section: Preparation Of Graphene Oxide Gomentioning

confidence: 99%

“…After cooling, the digest was passed through 0.45 µm polypropylene filters. The produced digests were kept in Nalgene at 4 °C until analysis [57].…”

Section: Application On Some Granitic Ore Rock Samplesmentioning

confidence: 99%

Modification of uranium determination procedures by alpha spectrometry using graphene oxide functionalized 4-aminobenzenesulfonate

2019

Self Cite

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Graphene oxide functionalized 4-aminobenzenesulfonate (sulfanilic acid) (GOSN) has been synthesized by the reaction of sulfanilic acid with graphene oxide for U(VI) ions adsorption from aqueous solutions. The controlling factors that affect the adsorption process have been studied using batch technique. The obtained results demonstrated that the maximum uranium adsorption capacity by GOSN was 320.57 mg g −1 , the obtained results were subjected to analysis by isotherm models, Langmuir and Freundlich models. The GOSN was characterized by FT-IR, BET isotherm studies, and SEM. The Uranium adsorption process was best described by the Langmuir isotherm model with a maximum adsorption capacity of 320.57 mg g −1 . It has been observed that the adsorption of uranium fitted better with the pseudo-second-order kinetics. The GOSN adsorbent exhibited greater adsorption capacity than graphene oxide for hexavalent uranium and has potential application for U(VI) removal from aqueous solution.

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“…Uranium and Th occur in trace amounts in all rocks at the Earth's surface (from 0.1 to 100 μg · g –1 ) , . Under closed geochemical conditions, the U and Th isotopes of the U‐decay chain (principally 238 U, 234 U and 230 Th) attain secular equilibrium within about 1.2 Ma.…”

Section: Introductionmentioning

confidence: 99%

Factors Controlling Natural Radionuclides Migration in Sedimentary Rock Samples, Gabal Um‐Hamd, Southwestern Sinai, Egypt

Harpy

Ragab²,

Morsy³

et al. 2019

Zeitschrift anorg allge chemie

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The activity concentrations of some radionuclides ( 238 U, 234 U, 230 Th, 226 Ra, 232 Th, 40 K and 235 U) were measured by γ-ray spectrometry in order to study their behavior and the relation between them in Carboniferous rock samples collected from Gabal (mountain) Um-Hamd, southwestern Sinai, Egypt. The whole samples are located in the two limbs and trough of a synclinal form structure to identify the radionuclides migration processes which have occurred in these rock samples. The average activity concentrations of 238 U

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Determination of uranium in Egyptian graniteic ore by gamma, alpha, and mass spectrometry

Cited by 27 publications

References 8 publications

Distribution and Bioaccumulation of Uranium and Thorium in Natural Soil and Wild Plants of Wadi El-Missikat, Central Eastern Desert, Egypt

Distribution and Bioaccumulation of Uranium and Thorium in Natural Soil and Wild Plants of Wadi El-Missikat, Central Eastern Desert, Egypt

Modification of uranium determination procedures by alpha spectrometry using graphene oxide functionalized 4-aminobenzenesulfonate

Factors Controlling Natural Radionuclides Migration in Sedimentary Rock Samples, Gabal Um‐Hamd, Southwestern Sinai, Egypt

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