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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电感耦合等离子体发射光谱（ICP-OES）测定掺铕†的氧化钆晶体的主量和痕量成分

建立了从单一溶液中测定掺铕氧化钆（III）晶体主成分和微量成分的ICP-OES方法。用轴向等离子体观察进行痕量分析，用径向观察进行Eu/Gd测定。比较了不同的校准溶液制备方法：混合等分和样品联合溶出。选择使发射强度的相对标准偏差（RSD）最小的光谱配准参数；用“等分混合”方法得到的结果与电子探针分析的结果一致。在Eu/Gd摩尔比下，RSD为1.5%。结果表明，在Gd浓度为1500 mg L−1时，最大ICP功率对52种微量元素的检出限为n·10−6 ~ n·10−3% w/w。

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