ICP-OES determination of major and trace composition of gadolinium(iii) oxide crystals doped with europium†

IF 3.1 2区化学 Q2 CHEMISTRY, ANALYTICAL

Journal of Analytical Atomic Spectrometry Pub Date : 2025-03-03 DOI:10.1039/D4JA00452C

Sofia I. Nagornaya, Evgeniya V. Polyakova, Ruslan E. Nikolaev and Elena N. Nigmatulina

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Abstract

The ICP-OES method for determination of the main and trace composition of europium-doped gadolinium(III) oxide crystals from a single solution has been developed. Axial plasma viewing was used for trace analysis, and radial viewing was used for the Eu/Gd determination. Different variants of calibration solution preparation were compared: mixing aliquots and joint dissolution of samples. The parameters of spectra registration that minimized the relative standard deviation (RSD) of the emission intensities were selected; the results obtained using the “aliquot mixing” method coincided with the results of an electron microprobe analysis. The RSD in the Eu/Gd molar ratio is 1.5%. It is shown that the maximum ICP power provides minimum detection limits for trace elements at a Gd concentration of 1500 mg L⁻¹ in solution, amounting to n·10⁻⁶ to n·10⁻³% w/w for 52 elements.

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