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本文研究了镝-六氟乙酰丙酮-三辛基氧化膦-Triton X-100荧光体系,确定了最佳试验条件。试验表明,Dy~(3+)在6.0×10~(-7)～2.0×10~(-5)mol/l范围内与荧光强度呈线性关系,其检出限为2.0×10~(-7)mol/l。该体系已用于测定混合稀土样品中的痕量镝,结果令人满意。
In this paper, Dysprosium - hexafluoroacetylacetone - trioctylphosphine oxide - Triton X-100 fluorescence system was studied, and the best experimental conditions were determined. The experimental results showed that the linear range of the fluorescence intensity of Dy ~ (3+) in the range of 6.0 × 10 -7 ~ 2.0 × 10 -5 mol / l with a detection limit of 2.0 × 10 ~ (-1) 7) mol / l. The system has been used to determine trace amounts of dysprosium in mixed rare earth samples with satisfactory results.