【摘要】 本文研究了Y³⁺与1.4-二羟基蒽醌所形成的配合物的荧光性能,测定的最佳条件和其它稀土离子共存的影响,开发了测定Y³⁺的高灵敏度的荧光新体系,检测限可达0.01μg/ml,并应用此方法成功地测定了混合稀土氧化物和氯化稀土中的Y₂O₃含量,取得令人满意的结果。更多还原

【Abstract】 This paper reports the fluorescence properties of Y³⁺ complex with 1.4-dihydroxyanthraquinone （1.4—DHAn）. The optimum conditions for the fluorometric determination of Y³⁺ and interference of coexisting rare earth ions have been investigated. The optimum conditions for the determination of less than 8μg/ml Y³⁺ were pH 5.5, 8×10^-5mol/L1.4-DHAn-76% Et. OH; excitation at 562nm and fluorescent detection at 584nm,Y-50 filter must be setting in the excitation side for removing interference of ligand’s fluorescent spectra. The detection limit is 0.01μg/ml. Yttrium in mixed rare earth oxides and chlorinated rare earth samples was determined with this method. The results analysed agreed well with tagreed those obtained by other methods.更多还原