Determination of uranium content in Th, U mixed oxides using EDXRF

Natarajan, V.; Kulkarni, Madhuri J.; Porwal, N.K.; Dhawale, B. A.; Hon, Nyok‐Sai; Godbole, S.V.; Manchanda, V. Κ.

doi:10.1016/j.nimb.2008.04.011

Cited by 13 publications

(11 citation statements)

References 9 publications

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“…Various approaches like internal standard, matrix dilution, thin‐film, mathematical correction, etc.,5 are used for taking care of the matrix effects. Calibration plots in the form of polynomial equations for uranium and thorium determinations in their mixed oxides are reported in literature 9. However, such methods can be used for the analysis of samples having their matrix similar to that of the calibration standards.…”

Section: Introductionmentioning

confidence: 99%

A comparative study on determination of uranium and thorium in their mixed oxides by EDXRF using tube and radioisotope X‐ray sources

et al. 2011

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Studies on the matrix effects of uranium and thorium on the determinations of each other in their mixed oxides using energy dispersive X‐ray fluorescence (EDXRF) spectrometry with tube and radioisotope excitations of U Lα and Th Lα are reported. An internal standard method for the determination of uranium and thorium in these mixed oxides is found suitable. Comparison of the analytical results of EDXRF determinations of uranium and thorium using tube and radioisotope excitation sources has been made. The analytical methodology involves preparation of mixed oxide calibration/sample mixtures of uranium and thorium oxides, mixing of internal standard yttrium in these mixtures, pelletizing the mixtures after thorough mixing and grinding using boric acid binder and measuring EDXRF spectra of the specimens thus prepared using Rh X‐ray tube as well as 109Cd radioisotope source. The samples were analyzed for uranium and thorium on the basis of the calibration plots obtained by plotting the intensity ratios of the analyte and internal standard characteristic X‐ray lines and their corresponding amount ratios. An average precision of 1.2% (1 s RSD) was observed for the determination of U and Th and the results deviated from the corresponding expected values by 3% on average. Due to the refractory nature of thorium oxide, comparatively more grinding time was required for thorium determinations. Copyright © 2011 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

A comparative study on determination of uranium and thorium in their mixed oxides by EDXRF using tube and radioisotope X‐ray sources

et al. 2011

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“…There are a number of advantages for choice of Cu as internal standard such as (i) closeness of its fluorescence line with Fe, (ii) their fluorescence lines are well resolved and (ii) both the elements are excited by fluorescence energy of Ge simultaneously. A lot of literatures are available on use of internal standard for element determination using EDXRF and Total X-ray fluorescence (TXRF) techniques in solid as well as in liquid samples [22][23][24]. The concentration of internal standard (Cu) was decided on the basis of literature data used for determination of uranium in 0.5 M D2EHPA ?…”

Section: Resultsmentioning

confidence: 99%

Determination of iron in uranium matrix using energy dispersive X-ray fluorescence (EDXRF) technique

Biswas

Rupawate

Hareendran

et al. 2015

J Radioanal Nucl Chem

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In this paper a novel method for determination of Fe in uranium matrix has been demonstrated using energy dispersive X-ray fluorescence (EDXRF) technique. Effects of various parameters such as variation of matrix concentration, detection limit, accuracy, precision, comparison with other established methods etc. were investigated in detail. Analysis of synthetic standards as well as real samples shows that for ten determinations relative standard deviation (RSD) is\2 %. The method can be used for determination of 2.24-3500 lg mL -1 Fe in uranium matrix with high accuracy and precision.

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“…Duplicate samples were prepared and measured by using Rh target Minipal4 PANalytical bench-top EDXRF and the tube ratings were set to 300 mV, 150 µA and using Mo filter with 100 second measurement. Calibration was carried out by measuring Lα line for U, Th and Pb (Natarajan et al, 2008;Yu et al, 2002). Standard Reference Material IAEA 312, IAEA 313, IAEA SL-1, IAEA Soil 7 and IAEA SL-1 for U and Pb, while for Th Standard IAEA RG-Th-1 was used for calibration.…”

Section: Alpha Spectrometry Measurementmentioning

confidence: 99%

Determination of Sediment Profile for <sup>210</sup>Pb, Pb, U and Th from Sultan Abu Bakar Dam Due to Soil Erosion from Highland Agriculture Area, Cameron Highlands, Malaysia

Hamzah

Riduan

Saat

2011

American Journal of Environmental Sciences

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Problem statement: Sultan Abu Bakar Dam in Cameron Highlands act as a catchment's to accumulate all eroded soil carried by the run off flow through Bertam River, the main river that passes through the highland agriculture area. All suspended solid that carried out by the river contain various kind of hazard potential to the environment. U, Th and Pb are the potential hazard elements carried out by water and accumulate at the dam. Approach: Five sampling point were selected where five 30cm core collected at each sampling point. Each core were sliced at 2cm and homogenized.210 Pb in homogenize sliced was determine using Alpha Spectrometry method. Plot of concentration against depth produce vertical distribution profile of the elements. This study will measure the activity of

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Determination of uranium content in Th, U mixed oxides using EDXRF

Cited by 13 publications

References 9 publications

A comparative study on determination of uranium and thorium in their mixed oxides by EDXRF using tube and radioisotope X‐ray sources

A comparative study on determination of uranium and thorium in their mixed oxides by EDXRF using tube and radioisotope X‐ray sources

Determination of iron in uranium matrix using energy dispersive X-ray fluorescence (EDXRF) technique

Determination of Sediment Profile for <sup>210</sup>Pb, Pb, U and Th from Sultan Abu Bakar Dam Due to Soil Erosion from Highland Agriculture Area, Cameron Highlands, Malaysia

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