FIELD: analytical chemistry.
SUBSTANCE: invention relates to analytical chemistry, in particular to methods for the luminescent determination of terbium. Terbium is converted into a luminescent complex compound with an organic reagent (R) - ciprolet. Ratio Tb:R=1:2 at pH=5.9±0.1.
EFFECT: increased accuracy, as well as the ability to simultaneously determine Tb, Dy, Sm, Eu in lanthanide oxides.
1 cl, 3 dwg
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