A comparison of alpha and gamma spectrometry for environmental natural radioactivity surveys

Saïdou, -; Bochud, François; Laedermann, Jean-Pascal; Njock, M.G. Kwato; Froidevaux, Pascal

doi:10.1016/j.apradiso.2007.07.034

Cited by 56 publications

(27 citation statements)

References 18 publications

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“…The solution is co-precipitated by LaF 3 (25 mg/ml of La(NO 3 ) 3 with HF 40%). Then, the solution is centrifuged and the formed precipitate is dissolved in hot boric acid (saturated solution) and HNO 3 . The uranium is re-oxidized to the hexavalent state by adding H 2 O 2 .…”

Section: Destructive Analysismentioning

confidence: 99%

“…Its detection limit is typically 100 to 1000 times lower than γ-spectrometry [4]. This technique is mostly used for detection and analysis of U as well as Th radioisotopes, particularly in the environmental samples, such as natural waters, which are characterized with low radioactivity concentration levels [3,5].…”

Section: Introductionmentioning

confidence: 99%

“…NaI-and HPGe-detectors). They are carried out on the bulk samples without the need for complicated and time consuming radiochemical separations methods [2,3].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Measurements of Natural Radioactivity in Some Granite Samples Using Alpha Spectrometric Analysis

Diab¹,

Monged²,

Khattab³

2013

OJAppS

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Alpha spectrometry using pulse height analysis has been used for the determination of uranium concentrations in different environmental samples. The concentration of 238 U was measured by both destructive and non-destructive techniques with a detection limit of less than 1.8 mBq/kg. However, because of the extremely low 234 U concentrations in environmental samples, it was necessary to use a destructive technique to separate U from the sample matrices as well as remove interfering elements from the sample solution to determine 238 U/ 234 U ratio. In this study, the uranium was separated from the environmental samples using anion exchangers in (Dowex 1 × 8 Cl − form) and purified via co-precipitation with Lanthanum fluorides (LaF 3 ) and the alpha source prepared by electrodeposition. The results obtained were validated using some certified reference samples.

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Section: Destructive Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Measurements of Natural Radioactivity in Some Granite Samples Using Alpha Spectrometric Analysis

Diab¹,

Monged²,

Khattab³

2013

OJAppS

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“…It can be measured with low detection limits using alpha-particle spectrometry and mass spectrometry. However, in order to save time on sample preparation and analysis, it is very common to measure 238 U using gamma-ray spectrometry [1]. The γ-ray transitions in 234 Th (following the decay of 238 U) are too weak for this purpose.…”

Section: Introductionmentioning

confidence: 99%

Quantification of uranium-238 in environmental samples using gamma-ray spectrometry

Hult¹,

Andreotti²,

Orduña³

et al. 2012

EPJ Web of Conferences

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A large number of environmental samples are routinely measured world-wide using gamma-ray spectrometry, some of its assets being easy sample preparation and comprehensive data for many radionuclides in one analysis. Although other techniques can be considered more suitable for analysing 238 U in environmental samples, it is also routinely done by gamma-ray spectrometry. One mainly uses γ-ray emissions following the decay of the first daughter, 234 Th, for determining the 238 U activity. However, the low-energy gamma-rays at 63 keV and 92.5 keV are very difficult to quantify in a robust way due to high attenuation and interferences. This paper quantifies parameters affecting the possibility of making robust quantification of 238 U via 234 Th using gamma-ray spectrometry. It addresses the use of correct decay data, suitable detectors, optimised sample size, enhanced spectral amplification, correction for peak interferences and control of background.

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“…-Other techniques such as the fluorimetry (Rathore, 2008;Sanjukta et al, 2008) The neutron activation analysis (Shinotsuka and Ebihara, 1997;Byrne and Benedik, 1988) and the alpha spectrometry (Hou and Roos, 2008;Saidou et al, 2008;Benedik et al, 2009;Jia et al, 2008) can be used for the determination of uranium and thorium, but these techniques require very long preparation of the sample (pre-concentration of the sample separation ...).…”

Section: Introductionmentioning

confidence: 99%

Determination of Uranium and Thorium in the Industrial Phosphoric Acid Using X-Ray Fluorescence Spectrometry with Wavelength Dispersive (WDXRF)

Guitouni¹

2016

IJC

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The method of determination for uranium and thorium in the industrial phosphoric acid by wavelength-dispersive X-ray fluorescence spectrometry (WDXRF) responds positively to all the validation tests and can be adopted for the dosage for these elements. It is clear that the procedure of the proposed method is simple and requires less time to complete the analysis. The concentration for uranium and thorium in the Tunisian phosphoric acid is in the order of 22 ppm for uranium with a coefficient of variation of 0.77% and of about 4 ppm for thorium with a coefficient of variation of 1.37%.

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A comparison of alpha and gamma spectrometry for environmental natural radioactivity surveys

Cited by 56 publications

References 18 publications

Measurements of Natural Radioactivity in Some Granite Samples Using Alpha Spectrometric Analysis

Measurements of Natural Radioactivity in Some Granite Samples Using Alpha Spectrometric Analysis

Quantification of uranium-238 in environmental samples using gamma-ray spectrometry

Determination of Uranium and Thorium in the Industrial Phosphoric Acid Using X-Ray Fluorescence Spectrometry with Wavelength Dispersive (WDXRF)

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