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Comparison Method for Uranium Determination in Ore Sample by Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES)

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A comparison method for the determination (without sample pre-concentration) of uranium in ore by inductively coupled plasma optical emission spectrometry (ICP-OES) has been performed. The experiments were conducted using three procedures: matrix matching, plasma optimization, and internal standardization for three emission lines of uranium. Three wavelengths of Sm were tested as internal standard for the internal standardization method. The robust conditions were evaluated using applied radiofrequency power, nebulizer argon gas flow rate, and sample uptake flow rate by considering the intensity ratio of the Mg(II) 280.270 nm and Mg(I) 285.213 nm lines. Analytical characterization of method was assessed by limit of detection and relative standard deviation values. The certificated reference soil sample IAEA S-8 was analyzed, and the uranium determination at 367.007 nm with internal standardization using Sm at 359.260 nm has been shown to improve accuracy compared with other methods. The developed method was used for real uranium ore sample analysis.

Keywords: ICP-OES; Inductively coupled plasma optical emission spectrometry; Internal standardization; Matrix matching; Plasma optimization; Uranium

Document Type: Research Article


Affiliations: Ege University, Institute of Nuclear Sciences, 35100 Bornova-Izmir, Turkey

Publication date: July 1, 2013

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